• 中文核心期刊
  • 中国科技核心期刊
  • ISSN 1007-6336
  • CN 21-1168/X

MessageBoard

Dear readers, authors and reviewers, if you have any questions about the contribution, review, editing and publication of this magazine, you can add comments on this page. We'll get back to you as soon as possible. Thank you for your support!

UserName
Email
Phone
Title
Content
Code
Display Method:
Articles in press have been peer-reviewed and accepted, which are not yet assigned to volumes /issues, but are citable by Digital Object Identifier (DOI).
Display Method:
The historical records research of four kinds of marine disasters in China from B.C.48 to 1949
Shan LIU, Ying-hua WANG, Xian-wu SHI, Ning JIA, Yu-xi SUN, Qiang LIU
 doi: 10.12111/j.mes.20190135
[Abstract](1292) [FullText HTML](1121) [PDF 777KB](12)
Abstract:
By organazing and arranging several kinds of historical books data, this paper collects 4,515 notes that recorded marine disaster in China from B.C.48 to 1949. Marine disasters in this paper contain storm surge, tsunami, ocean wave, and sea ice. Using disaster science, oceanography, geography, statistics and informatics theory, from the perspective of historical-document-study, spatial and temporal distribution characteristics of the marine disaster in China from B.C.48 to 1949 are summarized and analyzed on the basis of those historical notes. The results show that Storm Surge Disaster(SSD)is the most serious marine disaster in all dynasties. 1,244 SSD events have occurred from B.C.48 to 1949, and 52 events caused more than 10,000 deaths, most of which occurred in the southeast coastal areas of Jiangsu and Zhejiang province during the Ming and Qing dynasties. This paper is a supplement to the current research on marine disaster prevention and reduction in the cosatal China, at the same time, it is also the backtracking of ecological civilization construction and ecological protection in the time dimension.
Distribution character and pollution status of petroleum hydrocarbon in sediment in Liaodong Bay inshore sea areas
Chao-kui HU, Nan LI, Jin-hao WU, Hai-bo ZHAO, Zhao-hui WANG
 doi: 10.12111/j.mes.20190118
[Abstract](862) [FullText HTML](670) [PDF 750KB](6)
Abstract:
The temporal and spatial distribution of petroleum hydrocarbon of surface sediment of offshore marine areas in Liaodong Bay was examined based on the concentrations retrieved from marine environmental monitoring data from 2015 to 2017. The source and degree of pollution were also analyzed and discussed. The results show that the concentration of the petroleum hydrocarbon of surface sediment in Liaodong Bay from 2015 to 2017 was in the range of 1.5×10−6~2790.0×10−6, with a median value of 62.7×10−6. The total median values of petroleum hydrocarbon of surface sediment of marine functional zones in Liaodong Bay (the top three) were:port shipping area>reserve area> agricultural and fishery areas while the sequence of total over standard rate of petroleum hydrocarbon in sediment stations of marine functional zones in Liaodong Bay (the top four) was industrial and urban sea area> reserve area>agricultural and fishery areas> port shipping area from 2015 to 2017. The results indicate that the petroleum hydrocarbon mainly comes from areas with more frequent production activities, such as port and maritime areas, coastal areas for industrial and urban use, reservation areas, agricultural and fishery areas, etc.
Comparative study on the development of different islands (groups) in China based on TOPSIS
Kun-cheng ZHANG, Pei-fang GUO, Mao-chong SHI, Hong-yuan SHI, Shu-qing YANG
 doi: 10.12111/j.mes.20190082
[Abstract](1642) [FullText HTML](1079) [PDF 889KB](8)
Abstract:
Under the background of the marine economic powerful nation strategy, the development of islands is restricted by their special natural conditions, which is relatively backward compared with their neighboring land. Most China's islands are scattered in different areas, and play a role as an important “bridgehead” in the process of human discovering the ocean, therefore, the coastal provinces and cities have been always seriously concerning about the development of islands. The evaluation model of island group is constructed with the evaluation index that considering four aspects: resource supply capacity, ecological environment carrying capacity, economic development capacity, and the social support capacity of the island group. The Changdao island group, Nanao island group, and Weizhou island group are selected to conduct the development evaluation, according to their location, connectivity with land, climate type, and availability of data. The evaluation results of above island groups are compared and analyzed. The evaluation results indicate the development of Changdao island group is superior to the Nanao and Weizhou island groups. Referring the analysis, the infrastructure conditions, the tourism development stage, the effective protection of ecological environment, and the attention from local government are the major factors of determining the development of island area.
Community characteristics of zooplankton sampled with WP2 net in the Yellow Sea in spring
Fa-can LEI, Yu-yuan LI, Guang-xing LIU, Yun-yun ZHUANG, Hong-ju CHEN
 doi: 10.12111/j.mes.20190066
[Abstract](1459) [FullText HTML](1248) [PDF 916KB](6)
Abstract:
Community structure of zooplankton in the Yellow Sea was characterized based on the samples collected with a WP-2 plankton net (200 μm mesh) in May, 2012. Species composition, abundance, dominant species of zooplankton were analyzed together with the environmental data. A total of 65 zooplankton species and 27 larvae taxa were identified in the study area. The mean abundance of zooplankton (excluding Noctiluca scintillans) is (8109.5±7585.0)ind./m3, which was higher than that of zooplankton collected with coarse-meshed net (505 μm mesh). The dominant species consisted mainly of the small zooplankton, including N. scintilllans, Oithona similis, Centropages abdominalis, Paracalanus parvus, Acartia clausi, Calanus sinicus and copepod nauplii. CLUSTER analyses grouped the zooplankton in the study area into 4 communities, including the East China Sea inshore mixed water community, the neritic community, the Yellow Sea central community and the North Yellow Sea community. The clustering was in concert with the result of previous results.
Using detaching method to determine the abundance of particle-attached bacteria from the Pearl River Estuary and its coupling relationship with environmental factors
Zai-ming GE, Zheng-chao WU, Zi-jia LIU, Wei-wen ZHOU, Yuan DONG, Qian LI
 doi: 10.12111/j.mes.20190065
[Abstract](9573) [FullText HTML](8851) [PDF 962KB](27)
Abstract:
Export fluxes of sinking particulate organic carbon (POC) are important for the function of biological carbon pump. Vertical transportation of POC into the ocean interior can be affected by particle-attached bacteria (PAB) via the change of their abundance and activities, which may eventually affect the carbon sequestration into the ocean. In order to better understand the characteristics of PAB in the turbid nearshore waters along the Pearl River Estuary (PRE), we applied and modified an existing analytical procedure to effectively detach PAB from sinking particles for more direct and accurate estimation of PAB. The coupling relationship between environmental factors and the abundance of PAB were further analyzed and discussed. our results suggested that PAB from the fraction 2~20 μm particles was the dominant component of PAB in all stations. Moreover, there was a spatial change of PAB along the PRE with the highest abundance at Xiangzhou port (4.21×109 cells/L), following by Zhongda port (1.13×109 cells/L) and Wanshan island (0.27×109 cells/L). We also found that suspended organic particles might have supported PAB growth at Xiangzhou port where there was high PAB but low chlorophyll a. In addition, the growth of PAB might also subject to influences by varying concentrations and species compositions of inorganic nutrients in coastal waters. These results may be important for further understanding of PAB associated biogeochemical processes in coastal ecosystem.
Study on sedimental archaeal diversity and its correlation with environmental factors in Coastal Chemical Industry Park
Bei HUANG, Jie-yu WANG, Na WEI, Qin-lin MU, Han-yan LUO
 doi: 10.12111/j.mes.20190050
[Abstract](9328) [FullText HTML](9140) [PDF 995KB](13)
Abstract:
Archaeal community plays an extremely important role in marine biosphere and affects the cycling of carbon, nitrogen, sulfur, iron, and other elements in marine ecosystems. There are a large number of archaea in marine sediments. The investigation on their distribution and diversity lays the basis of understanding their ecological functions. In this study, the sediments of Jiaojiang Chemical Industry Park of Zhejiang Province were sampled, and metagenomic analysis based on the Illumina Miseq PE300 high throughput sequencing platform was applied to investigate the Archaea community. A total of 52 genera, 37 families, and 11 phyla of Archaea were detected from the sediments. Thaumarchaeota was the most predominant phylum, accounting for 49% of the total abundance, followed by Crenarchaeota, Euryarchaeota, and Woesearchaeota. Nitrosopumilus was the most abundant group at genus level, accounting for 48% of the total abundance. Obvious spatial heterogeneity was found in marine sedimental environment in the study area, which might have an impact on the archaeal community structure. Cadmium, lead, arsenic, chromium, mercury and other heavy metals were significantly correlated with certain archaeal phyla.
Occurrence and risk assessment of organophosphorus esters in surface water of mariculture farms in the Qinzhou bay, China
Wei-bin ZENG, Min-wei HAN, Rui-ling ZHANG, Rui-jie ZHANG, Ying-hui WANG, Ke-fu YU
 doi: 10.12111/j.mes.20190046
[Abstract](10065) [FullText HTML](9203) [PDF 860KB](12)
Abstract:
In this study, 11 organophosphorus esters (OPEs) in the surface water from mariculture farms, estuaries and the nearshore of the Qinzhou bay were analyzed. The total concentration of 11 OPEs averaged 126 ng/L and ranged from 32.9 to 227 ng/L the mean, which was at the lower level among the similar regions worldwide. The predominant contaminants were TCEP, TCPP and TBEP. The level of individual OPEs in the Qinzhou bay was mainly affected by their own aqueous solubilities and octanol-water partition coefficients (KOW) as well as their productions and consumptions. In general, the concentrations of OPEs were higher in the aquaculture ponds than in the nearby estuaries and nearshore area. The OPEs accumulated in the ponds might be mainly from the sources of culture water: rivers and coastal water. Chlorinated OPEs were more persistent than non-chlorinated OPEs in the culture ponds. So far, the concentrations of OPEs in the study area have no significant ecological impact on the surrounding environment, but its potential threat to human cannot be ignored because of their possible bioaccumulation in seafood.
Distribution and sources of polycyclic aromatic hydrocarbons in seawater and sediment from Xiangshan port, China
Meng-rong YANG, Xiao-rong DAI, Hang XIAO
 doi: 10.12111/j.mes.20190045
[Abstract](1779) [FullText HTML](1557) [PDF 945KB](20)
Abstract:
In order to study the distribution of polycyclic aromatic hydrocarbons (PAHs) in the sediment-seawater system, 16 kinds priority control PAHs in the sediments and seawater from 9 sampling points at the Xiangshan port were analyzed in January 2017. The source analysis and diffusion equilibrium were conducted by isomerism ratio method and fugacity approach. The concentrations of PAHs in the sediments ranged from 17.51×10-9~84.41×10-9, mainly high ring PAHs, and the pollution level was minor polluted. The PAHs in the sediments primarily came from high temperature combustion sources. The ranges of PAHs in the surface seawater, intermediate seawater and bottom seawater were 41.78~105.72 ng/L, 41.51~106.34 ng/L and 9.18~145.17 ng/L, respectively, which low ring PAHs were the most abundant compounds. The sources of PAHs in seawater originated mainly from oil leakage and oil combustion. The fugacity fraction was calculated to judge the diffusion behavior of PAHs. Nap, Ace and Flo were released from sediments to seawater. Acy, Phe, Ant and Pyr were close to the dynamic equilibrium in sediments and seawater. Flu, BaA, Chr and BbF were mainly diffused from seawater to sediment.
The basic characteristics and prevention countermeasures of red tide in Shandong coast waters
Jian ZHOU, Wei WANG, Zhi-hong WU, Qi-xiang WANG, Yuan WANG, Xiang GAO
 doi: 10.12111/j.mes.20190043
[Abstract](1278) [FullText HTML](1332) [PDF 902KB](11)
Abstract:
Based on historical records of red tides from 1952 to 2017, and according to the analysis of their temporal, spatial, and biological variation, the basic characteristics of red tides in Shandong coastal waters are studied with preventive countermeasures proposed. Non-toxic dinoflagellate blooms are frequently observed with a scale less than 10 km2 in shandong coast waters. The incidence of red tides is high from May to September and most events occur in the Yellow River Estuary, midwest of Laizhou Bay, Changdao offshore waters, Sishili Bay, Donggang offshore waters, Jiaozhou Bay and the Qingdao coast. Compared with other species, Noctiluca scintillans is frequently found. However, new causative organisms have been identified and the proportion of toxic and biphasic red tides has also increased since 2000. In order to prevent red tides, the level of information monitoring should be improved, risk assessments carried out and comprehensive management of the marine environment promoted.
Research on compensation for ecological loss caused by marine engineering construction
Ling-yan YANG, Shu-xiu LIANG, Zhao-chen SUN
 doi: 10.12111/j.mes.20190042
[Abstract](2280) [FullText HTML](1228) [PDF 641KB](9)
Abstract:
This paper introduces the application of compensation method for ecological loss caused by Marine engineering construction from two aspects: financial compensation and ecological restoration compensation. Two methods of ecological loss compensation fund accounting are discussed in the part of financial compensation, based on the ecosystem service function and based on the ecological restoration respectively. Ecological restoration compensation mainly introduces two different ways: the in situ ecological restoration compensation of structural forms with ecological effects from the engineering structure itself, and the heterotopic ecological restoration compensation of constructing new habitats in other places for ecological reconstruction. Last the compensation scale of different marine engineering is estimated based on HEA.
Remote sensing based application research of nuclear power plant thermal plume monitoring with different spatial resolution imagery
Xiang WANG, Xiu SU, Hao ZHANG, Xin-xin WANG, Lin WANG, Yan-long CHEN, Jian-hua ZHAO, Jin XU
 doi: 10.12111/j.mes.20190036
[Abstract](1060) [FullText HTML](981) [PDF 973KB](1)
Abstract:
Nuclear power industry developed rapidly in China in recent years and the environmental problems that followed have attracted much attention. In this study, three kinds of data source, MODIS thermal data, HJ-1B infrared scanner data and Landsat-8 thermal infrared data, which were imaged at simultaneous phase and different spatial resolution, were used to calculate sea surface temperature in the waters near the Hongyanhe nuclear power plant. Based on the corrected gulf average temperature method, the thermal plume distribution of nuclear power plants with three kinds of data source was obtained. Analysis shows that: Landsat-8 data achieves the highest accuracy and more details in thermal plume distribution. For restriction of the "mixed pixel" effect caused by low spatial resolution, HJ-1B and MODIS data have a bad performance. According to the differences in hydrogeological conditions between different monitoring areas, it’s wise to use satellite data with different time phase and spatial resolution comprehensively. It can be foreseen that unmanned aerial vehicles with infrared payload is expected to be a powerful complement to satellite remote sensing monitoring methods.
Principle and development of new microwave radiometer to obvserve ocean
Xiao-feng MA, Ming-sen LIN, Wu ZHOU, You-guang ZHANG
 doi: 10.12111/j.mes.20190032
[Abstract](10185) [FullText HTML](9276) [PDF 874KB](10)
Abstract:
Full polarization interferometric radiometer, which can image from interferometric synthetic aperture and get full polarization information, is the new type of microwave radiometer that can measure various physical information of ocean with high resolution and low consumption. By introducing the development of full polarization and synthetic aperture respectively, we expound on the necessity and principle of full polarization and synthetic aperture to aquire ocean information. Taking the advantages and disadvantages of WindSat and MIRAS as an example, we have discussed the advantages of multi-functional microwave radiometer and multi-load microwave sensors satellite to observe ocean. Moreover, to develop our satellite observation of ocean salinity, the necessity and the difficulity of collaborations of full polarization interferometric radiometer are pointed out for the application of multiple microwave remote sensing.
The diversity of bacterial communities in marine sediments after oil spill
Wen-xiang XIA, Li LIU, Ming-yuan ZHANG, Meng-meng MENG, Ying-ying ZHAO, Jin-cheng LI
 doi: 10.12111/j.mes.20190009
[Abstract](1887) [FullText HTML](855) [PDF 505KB](2)
Abstract:
Marine sediments are not only the reservoir of pollutants, but also the source of overlying water. There are high bacterial richness and diversity in marine sediments, and the heterogeneity of sediments lead to bacterial community of oil spill response diversely. The structure and diversity of bacterial communities can reflect the degree of oil pollution and the level of biodegradation to a certain extent, and there is a relationship between the relative abundance of hydrocarbon degradation genes and the level of pollution. In this paper, the diversity of bacterial communities in marine sediments after oil spill was reviewed, and the variation of bacterial communities in the supratidal zone, intertidal zone, subtidal zone and deep-sea sediments after oil spill was emphatically analyzed.
Effects of storage and filtration methods of riverine dissolved inorganic nutrients on their determination: a case study of the Yellow River water sample
Hong-mei ZHANG, Su-mei LIU, Guo-dong SONG, Shuai DING
 doi: 10.12111/j.mes.20190003
[Abstract](2703) [FullText HTML](1793) [PDF 937KB](40)
Abstract:
Timely pretreatment and proper storage of nutrient samples are the pre-conditions to ensure the reliability of data. In this study, we examine the differences between frozen storage and preservation with mercury chloride at room temperature for dissolved silicate in the Yellow River water sample that is characterized of high turbidity. We found out that there was no significant difference between the two storage methods. We compared in-situ filtration (freezing stored in 9 mL vacuum polyethylene terephthalate tube) and delayed filtration (freezing stored in 125 mL high density polyethylene bottle) for the nutrients, and discussed the effects of delayed filtration time on nutrients data quality. Nitrite, nitrate and phosphate were not affected by prolonged filtration time, while ammonium was significantly impacted by a decrease of 11%~46%, possibly due to suspended particulate matter adsorption and/or phytoplankton assimilation. As for silicate, storage container and its volume may play a major role in silicate storage while the prolongation of filtration time is much less important.
The spatial distribution of environmental factors and the response of net-phytoplankton in the Laizhou bay during wet-season in 2017
Xin-quan ZHANG, Hui-chao JIANG, Yuan-qing MA, Ling CHENG, Jia-hui LI
 doi: 10.12111/j.mes.20190026
[Abstract](1003) [FullText HTML](834) [PDF 875KB](4)
Abstract:
To better understand the distribution of environmental factors and the response of phytoplankton in the Laizhou bay, a comprehensive survey contained 31 stations about surfer sea temperature (SSS), surfer sea salinity (SST), nitrite (NO2-N), nitrate (NO3-N), ammonium (NH4-N), dissolved inorganic nitrogen (DIN), phosphate (PO4-P), silicate (SiO3-Si) and net-phytoplankton abundance and species diversity (H′) was conducted in August 2017. In the present study, obvious spatial distribution differences of environmental factors were observed with high SST, nutrients while low SSS located in southwest coast of the Laizhou Bay, especially at Xiaoqing River estuary. The terrestrial inputs such as the Xiaoqing River and its vicinity were the main factors influencing the distributions of SSS and nutrients. The low NH4-N value at the Xiaoqing River estuary was mainly attributed to the NH4-N reduction in the Xiaoqing River. High phytoplankton abundance and low H′, showing obvious spatial distribution differences, were mainly observed at the Xiaoqing River estuary. Four different phytoplankton groups were observed according to the community structures difference indicating an obvious response of phytoplankton to environmental factor variations. Phytoplankton abundance showed significant negative correlation with SSS and Si/N (p<0.05) while positive with NO3-N, NH4-N and DIN. Significant negative correlations were observed between H′ and SST, DIN (p<0.05). The phytoplankton community structure were mostly influenced by the environmental combination of NO3-N、NH4-N、DISi、Si/N and single factor of DISi.
Water mixing in the northern slope of the South China Sea as traced by 226Ra and 228Ra
Lin LANG, Jian-an LIU, Qiang-qiang ZHONG, Jin-zhou DU
 doi: 10.12111/j.mes.20190025
[Abstract](1485) [FullText HTML](1057) [PDF 1214KB](3)
Abstract:
Radium isotopes were important tracers for water transport and mixing processes. We investigated the distribution of 226Ra and 228Ra in the northern slope of the South China Sea (SCS) during spring based on a cruise conducted in March 2017. The results proved that the activities of 226Ra in surface water varied from 6.4 to 10.7 dpm/100 L, and those of 228Ra varied from 4.6 to 26.0 dpm/100 L. The 226Ra and 228Ra activities, temperature and salinity in the surface seawater reflected that the surface water in the northern SCS was mainly composed of two water masses, namely the SCS water and the Kuroshio branch water. The proportion ranges of the two water masses in study area was 0.13~1.05 and −0.05~ 0.87, respectively. The activity ranges of 226Ra and 228Ra in sea water column were 5.9~29.7 dpm/100 L and 2.6~6.5 dpm/100 L. Using a steady-state hypothesis and the two-box model of 226Ra and 228Ra, the residence time of seawater below 1500 m in the northern SCS was estimated to be approximately 14~61 years.
Preliminary study on characteristics of coastline and vegetation changes during island group reclamation——taking Zhoushan Petrochemical Base as an example
Zhong-chang XU, Ren XU, Zheng-long ZHANG, Zhi-en LI
 doi: 10.12111/j.mes.20190022
[Abstract](8957) [FullText HTML](8963) [PDF 877KB](7)
Abstract:
The study interpreted seven temporal satellite remote sensing images of Zhoushan Petrochemical Base project area, Combined the collection of relevant information and the field survey of landing on the island, extracted and analyzed the changes of coastline and vegetation distribution in different periods of Zhoushan petrochemical base construction through remote sensing (RS) and geographic information system (GIS). The results show that natural shoreline of island group reduced by 21.335 km in Zhoushan Petrochemical Base Project which accounts for 75.4% of the original natural coastline. Vegetation of island group reduced by 3.537 km2 which accounts for 74.0% of the vegetation area of the original island group in the past three years. The change of island group can be divided into four stages: the development of main island Dayushan, the process of connecting Dayushan island and Xiaoyushan island, the island group enclosed as a whole and enclosure period of island group expansion. In the first three stages, the natural shoreline of island group decreased rapidly, the artificial shoreline increased rapidly. In the fourth stage, the natural shoreline decreased slowly, and the artificial shoreline rushed up and fell back quickly. The vegetation of the island group decreased rapidly in the first two stages and slowly in the latter two stages. The above characteristics are mainly related to the process of the project construction. It is suggested that the island management department should do a good job in ecological protection and restoration in the development of the island group because of the serious influence to the original ecological environment of the island group created by the project development.
Study on beaches quality evaluation in Dapeng peninsula, Shenzhen
Xin-ling LONG, Pi-mao CHEN, Xiao-wei DUAN, Jia-rong CHEN, Xiao WEI, Jing SHI
 doi: 10.12111/j.mes.20190016
[Abstract](1244) [FullText HTML](940) [PDF 667KB](5)
Abstract:
Beaches are an important support for the development of coastal tourism and recreational fisheries. Beach quality evaluation is an important basis for the protection and rational development and utilization of beaches. Based on the characteristics of the resources environment of Dapeng peninsula beaches in Shenzhen, a suitable quality evaluation system was constructed for Dapeng peninsula referred to main domestic and overseas quality evaluation systems of beaches. The quality evaluation system covers three elements: nature, society and humanity. To be specific, this system consists of 2 aspects, 5 categories, 9 sub-categories and 33 factors that reflected the characteristics and functions of the beaches. Analytic hierarchy process (AHP) was applied to determining the indicators weight. There are five grades given by the beach quality evaluation system which were excellent beaches (≥80), good beaches (70~80), passing beaches (60~70), medium beaches (50~60) and poor beaches (<50). The results showed that the average score of beaches quality was 68.62 in resources and environment. The quality of most beaches resources and environment was pass level. The average score of beaches tourism service quality was 46.88. The quality of beaches tourism service was poor. The quality was evaluated as 3 excellent beaches, 11 good beaches, 15 passing beaches, 20 medium beaches and 4 poor beaches. The comprehensive quality evaluation level of the beach was passing. According to the evaluation of beaches quality, beaches development and management suggestion was proposed.
Assessment of heavy metal pollution in sediments of the sea area around the Liandao island of Haizhou bay
Xia LU, Li-qiang FAN, Shi-yu BAO, Yu ZHANG, Xian-yun FEI
 doi: 10.12111/j.mes.20190011
[Abstract](9569) [FullText HTML](9319) [PDF 788KB](18)
Abstract:
The total 21 surface sediment samples were collected in the sea area around Liandao island, which is located in Haizhou bay, Jiangsu province, China. The heavy metals (Cd, Cr, Cu, Pb and Hg) contents and the metal-like arsenic (As) content were determined. The spatial distribution maps of heavy metals and metal-like As were obtained by using Kriging interpolation method. The pollution degree and risk grade of heavy metals and metal-like As were assessed by ground accumulation index and potential ecological risk index respectively. The results were indicated that the average content of heavy metal Cu was higher than the Class 1 standard according to the Marine Sediment Quality (GB 18668-2002). The variation coefficients of heavy metal Cu and Pb were 114.66% and 108.44% respectively. Therefore, they had strong spatial dispersion. The pollution degree of heavy metals and metal-like As ranked from large to small: Cd>Pb>Cu>As>Hg>Cr based on the analysis results of ground accumulation method, in which heavy metal Cd, Cu and Pb were the moderate pollution, As and Hg were mild pollution, and Cr was non-pollution. The overall potential ecological risk level in the sea area of Liandao island reached the medium level. There existed the high ecological risk level of heavy metals and metal-like As in the southern part of Liandao island. Further, the ecological risk of surface sediments was mainly caused by heavy metal Cd.
Characteristics and evaluation of corrosive environment of surface sediments: a case study of the Sanya bay
Pei-wang BIAN, Fa-jin CHEN, Ye-chun ZHANG, Xin ZHOU, Xing-jian LIU, Yu-fen XU
 doi: 10.12111/j.mes.20190010
[Abstract](1401) [FullText HTML](896) [PDF 826KB](7)
Abstract:
With the increasing construction of submarine pipeline projects, the corrosive environment of submarine sediments has attracted more and more attention. The sediments collected in Sanya bay In March 2017, according to the comprehensive analysis of corrosion factors such as type, pH, Eh(Redox potential), organic carbon content, total salt content, Fe3+/Fe2+, sulfides and sulfate reducing bacteria of the sediments. determined the redox environment of the sediment and evaluated the corrosivity of the sediment. According to the evaluation, the sediments in the seabed of the Sanya bay as a whole show strong oxidizing environment, a weak oxidizing environment locally, and weak corrosion intensity, which is more suitable for the construction of a submarine pipeline project.
Distribution of the thermal discharge pollution of coastal power plant based on Landsat 8
Qin-qin SUN, Mei-xue LUO, Jia-jin ZHANG, Yin-yu LAN
 doi: 10.12111/j.mes.20190008
[Abstract](1708) [FullText HTML](1109) [PDF 833KB](6)
Abstract:
The sea surface temperature has been retrieved from Landsat 8 TIRS 10, which shows that the water temperature nearby the discharge area of Nanpu power plant are increased in summer and winter compared with that in the reference area. The scope of water temperature rise is larger and the degree is smaller in summer, while the scope of water temperature rise is smaller and the degree is larger in winter. The thermal discharge pollution from the power plant goes northwest to Waiwu island at rising tide, and moves to southeast at ebb tide. Due to the coal wharf and diversion dike, thermal discharge has little effect on intake. The retrieving results based on satellite images are consistent with the numerical simulation results before project construction.
Compositions and sources of plastic debris and microplastics in different sizes from the Sanggou bay beaches, Yellow Sea, China
Xin-yue ZHAO, Kuan-xu XIONG, Qian ZHOU, Chen TU, Lian-zhen LI, Yong-ming LUO
 doi: 10.12111/j.mes.20190004
[Abstract](10515) [FullText HTML](9336) [PDF 977KB](26)
Abstract:
The sources of microplastics in coastal areas are complex. The fragmentation of large plastics through physical, chemical and biological processes is one of the main sources of microplastics in the beaches. This study investigated the compositions, abundances, shapes, colors and components of plastic debris and the microplastics of different sizes in 7 beaches in Sanggou bay of the Yellow Sea. We also studied the relationships between the fragmentation of plastic debris and microplastics by qualitative and quantitative analysis, which can be used to identify the sources of the microplastics. The results showed that polystyrene foam accounted for 85%, 97% and 82% of the samples in the size range of 5 mm ~ 2.5 cm, 1 ~ 5 mm and <1 mm respectively. In plastic debris >2.5 cm, the types of the plastic debris related to mariculture accounted for 76%. The total abundances of plastic debris and microplastics increased by 2 ~ 4 orders of magnitude with the decrease of sizes.The abundances of microplastics and plastic debris in 1 ~ 5 mm and 5 mm ~ 2.5 cm were significantly correlated. By comparing the morphology and components characteristics of different sizes of plastic debris and microplastics, the sources of microplastics were identified as fragmentations from polystyrene foam, polyethylene float, yellow sponge, fiber fishing ropes and polypropylene film ropes. The results indicate that mariculture is one of the important sources of plastic debris and microplastics in beaches of Sangou bay. In the future, it is necessary to further explore the identification methods of sources and find new evidences to identify the sources of microplastics.
2D numerical simulation of tidal current in the sea around Naozhou island based on shallow water equation
Xiang-hai TAO, Da-yi XU
 doi: 10.12111/j.mes.20190194
[Abstract](305) [FullText HTML](263) [PDF 0KB](1)
Abstract:
The tidal current around Naozhou island is simulated with the shallow equation. The governing equations are discretized by a fractional finite element method using a characteristic-Galerkin procedure. In order to maintain the “well-balanced” property, the bottom slope source term was merged into the pressure equation. Moreover, a local bed slope modification technique is employed in drying-wetting interface treatments, the gradient of water depth was modified to ensure momentum conservation. Then the relationship between tidal level and velocity at the boundary was established based on the characteristic theory to ensure the accuracy of simulation. The results show that the tidal current around Naozhou island is the reciprocating-flow. The tidal current near the East island flows along the NE-SW direction, while flows along the NW-SE direction near Leizhou Bay.
Spatiotemporal distributions of As and Sb in sluice controlled tidal reach of Xiaoqing river estuary and their land-to-ocean fluxes estimation
Yong-bing CAI, Jing-bo ZHANG, Fan-de MENG, Fei-yue LI, Yue XIE, Hua ZHANG
Accepted Manuscript  doi: 10.12111/j.mes.20190235
[Abstract](367) [FullText HTML](256) [PDF 861KB](4)
Abstract:
The basic water quality data and concentration data of As and Sb in the sluice controlled river section of Xiaoqing river in three different water conditions in 2015 were obtained. The spatial and temporal distribution characteristics of As and Sb in the river section were analyzed, and we estimated their land-to-ocean fluxes. The results show that the spatial distribution of pH, salinity and temperature in the sluice controlled river section of the Xiaoqing river is closely related to the water situation. The topography of the Xiaoqing river estuary is also an important factor affecting the exchange of water from the upper reaches to the lower reaches. The concentration of As and Sb in water bodies decreased gradually along the reach from Wangdao sluice to the estuary in dry period and flat period, while the concentration of As and Sb in wet period was significantly lower than that in dry and flat periods. The release of As in sediment increased the concentration of As in the pore water, with a maximum value of 24.9 μg/L. In 2015, the land-to-ocean fluxes of As and Sb were about 2618 and 2677 kg, respectively.
A comparative study on transfer methods of right to use sea areas
Bo CHENG, Ming-hui XIA
Accepted Manuscript  doi: 10.12111/j.mes.20190290
[Abstract](391) [FullText HTML](345) [PDF 535KB](0)
Abstract:
In the primary market for the right to use sea areas, the right to use sea areas is mainly sold through administrative examination and approval. Competitive methods account for a small proportion, and the role of the market is limited, resulting in unreasonable allocation of sea resources and low efficiency in the use of sea areas. Using this model can not solve the problem of the efficiency of marine resources allocation. On the basis of perfecting the administrative examination and approval system, we should distinguish between the public welfare sea and the commercial sea, set the conditions for the assignment of the right to use the sea area separately, and use the public welfare sea for assignment by administrative examination and approval to safeguard the public interest. Operating sea uses are sold by competitive means, with priority given to listing or auction, so as to improve the allocation efficiency of sea resources and promote the optimal allocation of sea resources.
Sea surface temperature prediction algorithm based on STL model
Qi HE, Cheng ZHA, Wei SONG, Fu-ming QI, Zeng-zhou HAO, Dong-mei HUANG
 doi: 10.12111/j.mes.20190232
[Abstract](446) [FullText HTML](306) [PDF 1204KB](1)
Abstract:
Sea surface temperature is one of the important parameters in marine scientific research, and effective prediction of sea surface temperature is of great significance for marine disaster warning, marine economy and marine ecological environment. Aiming at the characteristics of periodicity, persistence, non-stationarity and non-linearity of sea surface temperature, firstly, the original sea surface temperature series is decomposed into periodic items, trend items and residual items by using the Seasonal-Trend decomposition procedure based on Loess to mine the potential information of sea surface temperature and remove the random noise in the sequence. Combining the advantages of the long short-term memory network model, a neural network is model to predict the sea surface temperature in the next five days. Comparing with the prediction effects of other methods, the experimental results show that the proposed method has better prediction accuracy when predicting sea surface temperature and can effectively predict sea surface temperature.
Review of the effects of low-tide rainfall-runoff on the particle transport in intertidal zone
Dai-Di HUANG, Si CHEN
 doi: 10.12111/j.mes.20190179
[Abstract](691) [FullText HTML](555) [PDF 728KB](6)
Abstract:
Low tide rain drops directly suspend surfacial particulates of intertidal environment, and the following runoff facilitate the mobilization of substantially amounts of particles to the water column. These processes have been proposed as "hot moments". In order to demonstrate the influences of rainfall-runoff on the particle cycling and its ecological effects, rainfall related research papers between 1978 and 2018 were reviewed in this paper. These studies suggest that raindrops at low-tide destroy and discharge viscous surface sediments, and then the subsequent runoff transfers the resuspended sediments downhill. These processes lead to 2-100 times increase in suspended sediment concentrations of tidal creek water column, which is substantially higher than that of shallow water waves and tidal currents. Meanwhile, concentrations of organic matter and heavy metals correspond to the temporal dynamic of the suspended particulate matter. Finally, suspended particles driven by rainfall-runoff have great chances to export to the coastal ocean by tidal current and hereby contribute to the “Outwelling” processes. This issue is particularly relevant because global climate models highlight an intensification of the hydrologic cycle in many coastal areas. Therefore, the potential for low-tide rainfall to influence intertidal zone biogeochemical processes can be expected to increase, and therefore, a more comprehensive understanding of rainfall-runoff effects on intertidal landscape material cycling is needed.
Acute toxicity and species sensitivity distribution of p-chloroaniline, 1,2-dichloroethane, butyl benzyl phthalate and 1-phenylethyl alcohol on two marine bivalves
Yu-han LI, Jing-jing MIAO, Shou-xiang WEI, Lu-qing PAN, Yu-fei LIN, Jiang-yue WU
 doi: 10.12111/j.mes.20190152
[Abstract](969) [FullText HTML](520) [PDF 697KB](4)
Abstract:
The acute toxicities and species sensitivity distributions (SSD) of four hazardous chemicals, p-chloroaniline, 1,2-dichloroethane, butyl benzyl phthalate and 1-phenylethyl alcohol, on Zhikong scallop Chlamys farreri and manila clam Ruditapes philippinarumwere investigated in the present study. The results showed that the 96 h lethal concentration 50% (LC50) values of p-chloroaniline, 1,2-dichloroethane, butylbenzyl phthalate and 1-phenylethanol to C. farreri were 36.18, >2070.00, 123.16 and 180.89 mg/L, meanwhile,96 h-LC50 values to R. philippinarum were 122.61, >2070.00, >2010.00 and 639.31 mg/L, respectively, C. farreri were more sensitive to four dangerous chemicals than R. philippinarum. Based on the SSD models, the short-term toxicity thresholds of butyl phthalate, p-chloroaniline and 1,2-dichloroethane were 0.64, 2.04 and 37.20 mg/L. The research would provide a theoretical basis for ecological risk assessment and pollution control of four hazardous chemicals in the marine environment.
Spatial-temporal variations and eutrophication analysis of nutrients in Meishan bay in 2018
Mei ZHANG, Shuo-qian MAO, Qiao-ting LOU, Qian-wen SHAO, Fan LI, Zhong-zhou LIN
 doi: 10.12111/j.mes.20190210
[Abstract](677) [FullText HTML](538) [PDF 897KB](11)
Abstract:
The spatial-temporal variations and eutrophication of water quality were analyzed based on the monitoring data from Meishan waterway in winter, spring, summer and autumn of 2018. The results showed that NO3-N was the main component of DIN which accounted for 68.245%~98.214%. The average concentrations of DIN and PO4-P in winter, spring and autumn were higher than those in summer, but the SiO3-Si in summer was on the contrary. The concentrations of nutrients were significantly negatively with Chlorophyll a in winter, summer and autumn except summer, indicated that the contents of nutrients were not only affected by phytoplankton consumption, but also by exogenous input and release of environmental media. In addition to summer, the average contents of PO4-P in the Mangchang Reach were higher than those in the bay, and PO4-P contents were decreased from the North dyke to the South dyke. The contents of SiO3-Si in Mangchang Reach were lower than those in the bay in spring and summer, but the autumn and winter were opposite. The assessment by comprehensive pollution index method showed that the Mangchang Reach was mainly moderately polluted and the bay was mainly mildly polluted both in spring and autumn, while opposite in summer. Potential eutrophication evaluation results showed that the water quality of Mangchang Reach possessed moderate restriction of potential eutrophication in phosphorus and oligotrophy, while the bay with potential eutrophication of phosphorus limitation and phosphorus restriction on eutrophication.
Development of regional SST algorithm for FY-3C/VIRR data in the seas around China
Quan-jun HE, Jie-chun WANG
Accepted Manuscript  doi: 10.12111/j.mes.20190107
[Abstract](580) [FullText HTML](555) [PDF 826KB](4)
Abstract:
Previous validation results showed that there was large bias in the operational sea surface temperature (SST) products from the visible and infrared radiometer (VIRR) onboard the Fengyun-3C (FY-3C) polar-orbiting meteorological satellite released by the national satellite meteorological center (NSMC). According to the setting of thermal infrared channels of FY-3C/VIRR, the regional algorithms to estimate daytime and nighttime SST in the seas around China were developed based on the non-linear SST (NLSST) and triple window NLSST (TNLSST). The clear-sky sea matchup data was generated from the bright temperature of satellite thermal infrared channels and in situ data, and the coefficients of NLSST and TNLSST were acquired by the regression fitting method. The regional SST algorithm was validated using the independent matchup data, the results showed that the bias and standard deviation (SD) were 0.082 ℃ and 0.633 ℃ in daytime, -0.007 ℃ and 0.557 ℃ in nighttime. Also, taking the optimum interpolation SST as reference value, the regional SST was compared with the operational products from the NSMC, the results demonstrated the bias and SD were decreased from 0.047 ℃ and 0.743 ℃ to 0.031 ℃ and 0.641 ℃ for daytime data, and from 0.184 ℃ and 0.708 ℃ to 0.034 ℃ and 0.556 ℃ for nighttime data, respectively.
Analysis of spatiotemporal dynamic changes of the north Jiangsu coastline in the past 40 Years
Hong-xing CUI, Chi-sheng WANG, Hong YANG, Zhong-wen HU, Chun-feng WANG
Accepted Manuscript  doi: 10.12111/j.mes.20190137
[Abstract](865) [FullText HTML](789) [PDF 1424KB](10)
Abstract:
Coastline plays an important role in indicating sea-level rise, coastal erosion, harbor accretion, wetland ecological resources and coastal environment. Using remote sensing (RS) and geographic information system (GIS) technology to obtain the coastline data of the northern Jiangsu coast in the period of 1978-2018, the coastline length change, coastline change rate and coastline type change were analyzed, and the estuaries were taken as the boundary point to analyze the coastline change characteristics. The results show that: (1) In the past 40 years, the total length of coastline in the study area has a decreasing trend, and the change of coastline type is more obvious. The artificial coastline and the natural coastline have a trend of increasing and decreasing with time, respectively. (2) During the period of 1978-2018, the rate of coastline advancing to sea is much higher than coastline advancing to land. (3) From 1978 to 1988, the coastline between Sheyang estuary and Xinyang port has the most obvious propulsion speed, which is mainly pushed to the sea in the way of accretion, and the average end point rate (EPR) of the coastline is 281.4 m/a; From 1988 to 1998, the coastline between Xinyang port and Doulong port has the most obvious propulsion speed, which is mainly pushed to the sea in the way of accretion with the average EPR is 535.5 m/a; During 1998-2008, the coastline accretion rate between Doulong port and Dafeng port is the most obvious, mainly by artificial reclamation to the sea with an average EPR of 502.1 m/a; During 2008-2018, the coastline accretion rate between Liangduo estuary and Fangtang estuary is the most obvious, mainly by artificial reclamation to the sea area with an average EPR of 347.7 m/a.
Dynamic change of utilization and environmental pressure assessment of development in the sea area near Changxing Island
Ting-ting LIANG, Li-na KE, Quan-ming WANG
Accepted Manuscript  doi: 10.12111/j.mes.20190098
[Abstract](1150) [FullText HTML](661) [PDF 972KB](3)
Abstract:
This study to Changxing Island sea area as the research area, and the high resolution remote sensing images of 2005 and 2015 are used as data sources, and the information of reclamation distribution, area and utilization type in Changxing Island and its adjacent sea area is extracted and analyzed by means of GIS technology. The dynamic degree of utilization type of sea area, utilization transfer matrix of sea area, utilization structure information entropy of sea area and sea area development resource environmental pressure index are calculated. The comprehensive index of development and utilization intensity is used to analyze the dynamic changes of the development and utilization of the sea area near Changxing Island from 2005 to 2015, so as to evaluate its development resource environment pressure intensity. The results show that: (1) in 2005-2015, the sea expansion rate of harbors near Changxing Island was the fastest, with the dynamic attitude as high as 11.09%, followed by the unutilized expansion rate, while the sea area for salt industry showed a negative growth with a dynamic degree of -0.16%; (2) In the past 10 years, the main types of reclamation changed from sea area to reclamation, harbor and unused type; (3) During the study period, the information entropy increased from 0.96 in 2005 to 1.40 in 2015. The balance degree of sea area utilization structure was strengthened, and the structure of sea area utilization tended to be diversified and balanced; (4) In 2005 and 2015, 56.14% and 62.97% of the sea areas with moderate or higher environmental pressures on resources development in Changxing Island, 80.7% of the area with the change of the environmental pressure index greater than zero, and the intensity of the environmental pressure is gradually increasing
Application of coastal reservoir technology to improve regional natural and water supply environment: a case study of the Murray-Darling Basin in Australia
Kun-cheng ZHANG, Pei-fang GUO, Mao-chong SHI, Shu-qing YANG, Hong-yuan SHI, Shao-yang CHEN
Accepted Manuscript  doi: 10.12111/j.mes.20190255
[Abstract](1087) [FullText HTML](868) [PDF 914KB](4)
Abstract:
Australia's Murray-Darling Basin is extremely important for its economic, resource, environmental and ecological values. The two most important rivers- River Murray and River Darling crosses through the basin. In recent years, due to the “millennial drought”, a series of ecological and environmental problems such as rising salinity, large fish death events and soil acidification phenomenon have caused a shortage of freshwater resources in the downstream Adelaide region. This paper draws lessons from the failure of the design of the downstream Alexander Lake’s reservoir, and attempts to improve the regional natural environment and water supply ability through the application of multi-purpose coastal reservoir technology. So that the Adelaide region has sufficient high-quality drinking water supply to alleviate the phenomenon of river dryness in the region. Trying to improve regional natural environment and water supply environment by applying multi-purpose coastal reservoir technology. In addition, through the research of coastal reservoir technology, it provides suggestions for the improvement of natural environment and water supply ability in China's coastal areas, and realizes the effective management of China's freshwater resources.
Extraction and purification of okadaic acid (OA) and dinophysis toxin-1 (DTX1) in the dinoflagellate Protocentrum Lima
Wei JIN, Jing-yuan YAO, Wen-bo CHEN, Chang-bao GONG, Bao-lin JIA, Shi-feng SUI, Shao-shu FENG, Lei HAN, Yu-bo LIANG, Song-hui LV
Accepted Manuscript  doi: 10.12111/j.mes.20190149
[Abstract](1091) [FullText HTML](855) [PDF 954KB](7)
Abstract:
Marine dinoflagellate Prorocentrum lima producing diarrhetic shellfish poison were mass cultured and crushed by ultrasonic, followed by extracting with methanol for okadaic acid (OA) and dinophysis toxin-1(DTX1). OA and DTX1 with high purity were obtained by a preparative high performance liquid chromatographic (HPLC) method after enrichment and purification with macroporous adsorption resin HP20, which was used for the enrichment of extracellular toxin secreted in the sea water. The two compounds were identified by nuclear magnetic resonance hydrogen spectrum (1H-NMR) and high-resolution mass spectrometry (HRMS). The purity of OA and DTX1 was identified by quantitative nuclear magnetic to be 99.39% and 99.26% respectively, meeting the requirements for preparation of standard material.
Distribution characteristics of nitrifiers and denitrifiers in sediments from Changjiang Estuary and adjacent sea area
Xin-quan ZHANG, Xiao-ya WU, Yu ZHEN, Yang-yang CHEN
 doi: 10.12111/j.mes.20190099
[Abstract](1118) [FullText HTML](783) [PDF 1019KB](3)
Abstract:
The biomass distribution characteristics of total bacteria, aerobic ammonium-oxidizing and denitrifying bacteria in sediments from Changjiang Estuary and adjacent sea area were analyzed using DAPI staining and fluorescent quantitative PCR technology. For the vertical distribution, denitrifying bacteria (DB) biomass was much higher than that of aerobic ammonium-oxidizing bacteria (AOB) at the same depth, but there were similar trends between their vertical biomass. The intense mixing of sediments was suitable for AOB coexisting with DB. Sediment depth was the most significant influencing factor to the vertical biomass profiles of total bacteria, AOB and DB. The increasing depth affected AOB more easily than total bacteria and DB. For the horizontal distribution, total bacterial biomass gradually decreased from inshore to offshore, which was significantly impacted by the nitrite concentration. There were high biomass areas of AOB and DB in the sea area off Changjiang Estuary and the south sea area of Zhoushan Archipelago, respectively, and dissolved oxygen concentration and total nitrogen content were important influencing factors to their horizontal distributions. This study provided support for thoroughly understanding the role of bacteria in nitrogen cycles in estuarine and coastal sea area.
Purification evaluation of DIN and DIP in different types of wetlands in Jiaozhou bay and Daya bay
Man-hua LUO, Hai-long LI, Kai XIAO, Hao HUANG
 doi: 10.12111/j.mes.20190213
[Abstract](717) [FullText HTML](763) [PDF 1361KB](4)
Abstract:
In order to evaluate the purification capacities of DIN and DIP in different types of wetlands in two typical semi-closed bays (Jiaozhou bay and Daya bay) in China, a quantitative method of seawater-groundwater interactions was used to calculate the purification capacities. Results showed that: there are four types of wetland in Jiaozhou bay, i.e., sandy beaches, mud flat, estuarine intertidal zone and tidal marsh, and their purification capacities on DIN sort as follows: mud flat>sandy beaches>estuarine intertidal zone> tidal marsh and DIP sort as follows: sandy beaches>mud flat>estuarine intertidal zone> tidal marsh. The purification rate ranged from 2.11×105 mol/d to 4.23×105 mol/d for DIN and from 4.29×102 mol/d to 8.22×102 mol/d for DIP, respectively. The estimated nitrogen removal rate due to human activities such as land reclamation was 3.1~5.4 t/d. In contrast, there are three types of wetlands such as mangrove swamp, sandy beaches and silt-sandy beaches in Daya bay. The DIN purification capacities of different types of wetlands in Daya bay sort as follows: mangrove swamp>sandy beaches>silt-sandy beaches, with an average of 4.22×107 mol/d. Due to the area decrease of mangrove swamp and sandy wetlands in Daya bay, the decreased nitrogen removal rate was estimated to be 1.33×102 t/d and 0.81 t/d, respectively.
Advances in analytical technique research for dissolved amino acids in seawater
Lei YUAN, Chun-chao ZHANG, Yan-ru LV
 doi: 10.12111/j.mes.20190172
[Abstract](825) [FullText HTML](714) [PDF 645KB](4)
Abstract:
Amino acids, as one of the most important readily bioavailable components in marine organic nitrogen pool, have attracted more and more attention with the deepening understanding of the biogeochemical cycle of organic nitrogen in the marine environment. Studies on composition and bioavailability of amino acids are of great significance to understand the migration and transformation of organic nitrogen in the ocean. In this paper, the advances in analytical methods for dissolved amino acids in seawater, such as spectrophotometry and fluorospectrophotometry and separation methods, such as Ion Exchange Chromatography (IEC) and High-performance Liquid Chromatography (HPLC) are detailed explained. And the most widely used precolumn derivatives-reversed-phase liquid chromatography-fluorescence detection method is more detailed reviewed. Moreover, the latest techniques such as Mass Spectrometry (MS), Compound-Specific Isotope Analysis (CSIA) and Capillary Electrophoresis (CE) are also mentioned, as well as their prospected applications in oceanography.
Construction and application of on-line monitoring system for dissolved oxygen in multi-water layer of marine ranching
Long-wen FU, Zhi-qiang DU, Ge GAO, Xi-yan SUN, Ling-xin CHEN
 doi: 10.12111/j.mes.20190159
[Abstract](1109) [FullText HTML](721) [PDF 1381KB](7)
Abstract:
In order to monitoring on the dissolved oxygen (DO) status of different water layers in marine ranching in the real-time, online and continuous, this paper designs a multi-layer marine dissolved oxygen online monitoring system. It integrates an optical dissolved oxygen sensor developed independently and designed the chain-type DO section measurement structure. The data acquisition and control system is designed based on STM32 single-chip. And the wireless transmission module communicating with the remote control center is used to complete the real-time update and visual display of the data, which realize the expression of the remote control command to the monitoring system. The results show that the drift of DO probe can be controlled within 3%, and the whole system displayed the good stability, high reliability. It is convenient for users to check the current dissolved oxygen status of seawater and view historical data. In 2016 to 2018, the system has been applied to the east ocean Yunxi marine ranching in Yantai, Shandong. The observation data shows that DO and temperature show similar laws. The concentration of DO in the surface water is high with small variation range. The variation range of DO in the middle sea water is obviously higher than that in the surface layer and the bottom layer. And the DO in the bottom sea water shows a continuous downward trend without obvious vertical mixing. During the observation period, the bottom sea water of marine ranching appeared hypoxia for more than 18 days in 2016 and 2017, and the time series change trend of the test data is consistent with the weather change, which provide early warning and forecast for the aquaculture enterprises of marine ranching and reduce the economic loss caused by hypoxia disaster.
Physiological and ecological response of marine coccolithophores to global climate change: a review
Yuan-yuan FENG, Mao-nian XI
Accepted Manuscript  doi: 10.12111/j.mes.20190231
[Abstract](793) [FullText HTML](1228) [PDF 639KB](10)
Abstract:
Coccolithophores are one of the marine phytoplankton functional groups, playing important roles in the marine carbon cycle through both photosynthetic and calcification processes. The oceans are considered as important sink of the anthropogenic CO2. The rapid increase in atmospheric pCO2 since the industrial revolution has caused the trend of global climate change, including ocean acidification, global warming and changes in the nutrient concentrations and irradiance in the mixed layer. These complex changes in environmental conditions will affect the physiology and ecology of marine phytoplankton simultaneously, which is the so-call environmental multiple stress. The response of coccolithophores to changes in multiple environmental drivers will also have complex feedback to marine carbon cycle. This review mainly overviews the current understanding of the effects of both single environmental driver (CO2 concentration, temperature, and nutrient and irradiance levels) and the interaction of multiple environmental drivers on the physiology of coccolithophores and its implications on the marine biogeochemistry. Based on these recent research advances, the future research perspectives are also summarized.
Temporal and spatial distribution characteristics of nutrients and eutrophication assessment in Guanghai bay
Bao-shi LI, Cheng-xuan LI, Yu-xiu JIN, Peng JI, Xiao-long ZHAO, Shuai HE
 doi: 10.12111/j.mes.20190171
[Abstract](900) [FullText HTML](749) [PDF 1029KB](7)
Abstract:
The spatial and temporal distributions of environmental ecological parameters (including salinity, nutrients and chlorophyll a) were investigated in the Guanghai bay during two cruises in October 2014 (autumn) and April 2015 (spring). The state of eutrophication in this region were evaluated by eutrophication index (EI) and nutrient quality state index (NQI). The relationships among nutrients, the N/P ratio, phytoplankton biomass and population structure were discussed in order to provide an improved understanding of the influence of environmental factors on coastal eutrophication. The spatial distributions of nutrients displayed a declining trend from the coastal estuary toward the marine environment in spring, which was primarily affected by the sewage discharge of Datong river. In autumn, the concentrations of nutrients were higher in the northwestern regions, compared with those in the southeastern area. These findings suggest an extremely dynamic cycling of nutrients that responds rapidly to changes in the phytoplankton biomass and community structure. Eutrophication occurred in Guanghai bay during spring and autumn, with a decreasing gradient from inshore to offshore sites. Eutrophication situation worsened obviously from spring to autumn.
Heavy metal contents of mangrove surface soils affected by the social and economic development in Hainan Island
Zi-yin HUANG, Dong-sheng GUAN, Gang WANG
Accepted Manuscript  doi: 10.12111/j.mes.20190153
[Abstract](2190) [FullText HTML](948) [PDF 628KB](11)
Abstract:
Heavy metal elements are persistent pollutants which are easy to be accumulated in the environment. Those poisonous pollutions will cause serious threats to ecological security and human health because of their long-term accumulation in environment, especially in the surface sediments. To find out the effect of social and economic development on the mangrove wetlands, correlation analysis was used to address how heavy metal contents in mangrove wetlands were affected by surrounding land use/cover types, social and economic development indicators and pollutant emission of different cities in Hainan Island. The result showed there were significantly positive correlations between Zn, Ni, Hg, and Co, indicating that those heavy metal elements may come from the same or similar sources. Furthermore, it was found that both Zn and Cu contents increased with the increasing of construction land area; Cu、Zn、Hg are significantly positively correlated with GDP, while Cu and Zn are significantly positively correlated with permanent population. All mentioned above results of correlation analysis generally showed those heavy metal elements may come from urban construction and vehicle exhaust.
Study on the chemical forms of phosphorus and their vertical distributions in core sediments from Zhejiang offshore
Ming-mei AN, Tao-sheng HAN, Yi-ming WANG, Ai-rong ZHENG
 doi: 10.12111/j.mes.20190154
[Abstract](1082) [FullText HTML](840) [PDF 1257KB](3)
Abstract:
Total phosphorus of three columnar sediments in Zhejiang offshore was measured. A sequential extraction method (SEDEX) was adopted to measure phosphorus of 5 forms in the columnar sediments. 210Pb method was used to measure the deposition rate. Age-dating results were combined with some climatic or human activity events to analyze the vertical distribution characteristics of total phosphorus, inorganic phosphorus and phosphorus of 5 forms, and degradation of organic phosphorous. The research results indicated that vertical distribution characteristics of phosphorus in various forms at different stations were different, relating to the sedimentary environment and diagenesis. Organic phosphorous in the core sediments showed the rapidly declining trends in the surface layer or sub-surface, indicating that degradation of organic phosphorous mainly occurred in the surficial aerobic zone and sub-surface.
Study on particulate mercury and dissolved mercury in adjacent waters of the Yangtze River Estuary in summer and autumn
Wen ZHENG, Ru-hai Liu, Shuai YUAN, Xi-xi CHONG, Dan YI, Yan WANG
 doi: 10.12111/j.mes.20190189
[Abstract](890) [FullText HTML](619) [PDF 1115KB](4)
Abstract:
The distribution trend and influence of particulate mercury (PHg) and dissolved mercury (DHg) in adjacent waters of the Yangtze River Estuary were studied by the Science 3 scientific research vessel in July and October 2018, respectively. The results showed that PHg and DHg had a large variance in the surface seawater, and the difference was obvious in different seasons. In summer, PHg in surface water decreased from nearshore to the open seas. In the autumn period, this trend was not obvious. DHg accounted for a larger proportion in this sea area. DHg was higher in autumn than that in summer, and the surface water was higher than the bottom water. In summer, the particle-water partition coefficients in surface and the bottom water increased from nearshore to the open seas; PHg correlated with TSM significantly in the surface and bottom water and PHg/TSM increased exponentially with salinity (R2=0.3365, p<0.01). The main reason for the change in the temporal and spatial distribution of surface PHg was the decrease of Changjiang diluted water and more windy weather. The distribution characteristics of DHg were controlled by small particle diameter and more marine organic particles. While the higher concentration of DHg at 30°N reflected the effects of river transport and surrounding pollution discharge.
Remote sensing study on aquaculture changes in Sansha bay
Ming WEI, Hong JIANG, Yun-zhi CHEN, Huan-ge LI
 doi: 10.12111/j.mes.20190117
[Abstract](739) [FullText HTML](899) [PDF 1509KB](1)
Abstract:
This paper studies the spatial distribution of aquaculture areas in Sansha bay and the impact of aquaculture area changes on water quality in the area, so as to provide scientific basis for water quality environmental protection and sustainable development of aquaculture industry in Sansha bay. It carries out the classified extraction and statistics of remote sensing images of Sansha bay in 2007-2019 by cage aquaculture area and algae aquaculture area, and analyzes the dynamic changes of the area and distribution of two kinds of aquaculture. Besides, it predicts the water quality data of Sansha bay in 2019 by time series analysis model, and conducts the correlation analysis between aquaculture and water quality based on the dynamic changes of water quality and aquaculture area from 2007 to 2019. The results show that the area of aquaculture appeared an overall growth trend from 2007 to 2019. Algae aquaculture area increased rapidly from 2007 to 2014, basically covering the whole Sansha bay area, while it remained stable from 2014 to 2019. And cage aquaculture area continued to increase from 2007 to 2019, which gradually expanded to the waters near Dongan island and Dongchongkou. The change trend of water quality and aquaculture area in 2007-2018 is basically the same, so qualitative and quantitative analysis has verified that there is a certain correlation between water quality and aquaculture area in Sansha bay, and it is further verified by water quality prediction in 2019.
Impacts of human activities on the changes of wetland landscape types in the Yellow River Delta during the past 40 years
Ke-xin CHEN, Pi-fu CONG, Wei LEI
 doi: 10.12111/j.mes.20190002
[Abstract](1385) [FullText HTML](1157) [PDF 1215KB](11)
Abstract:
In order to understand the impact of human activities on the changes of wetland landscape types in the Yellow River Delta wetland and to identify the dominant human factors, this paper uses Landsat 1976, 1986, 1996, 2006, 2016 satellite data and uses landscape transfer matrix, and human activity intensity model to quantitatively monitor the wetland landscape types under the influence of human activities in the Yellow River Delta during the 40 years and assess the impact of human activities by partitioning in the study area. The results are as follows: (1) Three kinds of conversions that are greatly affected by human disturbance: natural wetlands to human-made wetlands and non-wetlands are the most, and non-wetlands to human-made wetlands are medium, and human-made wetlands to non-wetlands are the least. (2) The proportion of landscape types that have been affected by human disturbances in the study area has been increasing, and the impact rate of human activities has increased from 16.77% in the first 10 years to 52.94% in the last 10 years. Farmland farming was the main human activity factor affecting the change of landscape types from 1976 to 2006. Between 2006 and 2016, the distribution of changes in natural wetlands area affected by various human activities is relatively balanced, and the proportion of transfer to reservoirs ponds is 34%. Farmland reclamation was the main influence in 1976-2016. (3) The human activity intensity model is applicable to the calculation of human activity intensity in the Yellow River Delta wetland. Between 1976 and 2016, severe disturbances were mainly concentrated in coastal areas, undisturbed and interference weakening areas were mainly concentrated in nature reserves. The results are in good agreement with the actual field survey results. The results of the study can provide a useful reference for the relevant departments to protect, manage and rehabilitate wetlands in the Yellow River Delta.
Current situation and management countermeasures of coastline protection and utilization in China
Liang LIU, Qi YUE, Hou-jun WANG
Accepted Manuscript  doi: 10.12111/j.mes.20190052
[Abstract](2345) [FullText HTML](1596) [PDF 760KB](42)
Abstract:
Coastal line is not only the space carrier of marine economic development in coastal areas, but also an important platform to protect the marine environment and maintain the ecological balance of coastal zone. Generally speaking, it can be divided into natural shoreline and artificial shoreline. Since the 1990s, with the rapid economic and social development of China's coastal areas, the intensity of offshore sea area and coastline development has been increasing. By 2018, the proportion of artificial coastline in China has exceeded 75%, and that of individual provinces and cities has exceeded 90%. Overload development and utilization of the coastline has brought about environmental problems, and also caused difficulties in the protection and management of the coastline. It is suggested that work should be carried out from the perspectives of establishing coastline management system, establishing responsibility supervision mechanism of natural coastline retention rate, implementing coastline rehabilitation and implementing coastline supervision and management and so on, so as to promote the protection and utilization of coastline resources in China in the new era.
Effects of petroleum hydrocarbons on ingestion and metabolism of Calanus sinicus
xiao-ju ZHANG, ming-ru YU, long DING
Accepted Manuscript  doi: 10.12111/j.mes.20190048
[Abstract](930) [FullText HTML](741) [PDF 703KB](1)
Abstract:
The effects of petroleum hydrocarbons on ingestion and metabolism of Calanus sinicus were studied. The results showed that petroleum hydrocarbons had significant effects on filtering rate, ingestion rate, respiratory rate and ammonium excretion rate of C. sinicus (p<0.05). Ammonium excretion rate was significantly different from every concentration groups (p<0.05), which was the most sensitive to the changes of petroleum hydrocarbon concentration. There were no significant differences in filtering rate, ingestion rate, respiratory rate and ammonium excretion rate between 0.051 mg/L, 0.103 mg/L, 0.215 mg/L concentration groups and the control group (p>0.05) after 14 days of recovering culture. The filtering rate and ingestion rate of 0.43 mg/L and 0.86 mg/L concentration groups were significantly differences from the control group (p<0.05), and no significant differences in respiratory rate and ammonium excretion rate (p>0.05). In the control group and low concentration groups, protein metabolism was dominant metabolism styles, the O:N ratio increased when exposed to 0.43 mg/L and 0.86 mg/L concentration groups, carbohydrates or fats began to participate in metabolism. After 14 days of recovering culture, the metabolic was still based on protein in all concentration groups.
Research and application of river runoff calculation method based on on-line monitoring—a case study in Liaohe river
Yong-Jun YANG, Zhan-ming HU, Zhong-sheng LIN, Yu WANG
Accepted Manuscript  doi: 10.12111/j.mes.20190007
[Abstract](1083) [FullText HTML](916) [PDF 697KB](8)
Abstract:
With the rise of river inflow on-line monitoring technology, this paper studies the main technical links of on-line monitoring of inflow into the sea based on the principle and steps of on-line monitoring technology. We suggest a comprehensive and all-round streamlined calculation scheme of rivers runoff into the seas. The method was applied to calculate the example in Liao River inflow. This study provides support for the popularization of on-line monitoring technology of inflow into the sea and the accurate estimation of pollutant discharge from rivers.
Study on the status of the use of sea space resource in China’s marine industry
Jian-li ZHANG, De-rui SONG, Chao ZHOU, Jing-ping XU, Rong SUN
Accepted Manuscript  doi: 10.12111/j.mes.20190134
[Abstract](1028) [FullText HTML](861) [PDF 699KB](4)
Abstract:
Improving the economic efficiency of marine space resource utilization is an important measure for building marine power. This paper proposed a marine industry classification system, then constructed some mathematical models for study on the relationship between sea structure and economic value of marine industry, such as the industrial sea structure diversification index, economic output value and economic efficiency, and analyzes the relationship between the spatial resource use structure and economic efficiency. The conclusions were as follows: (1) The marine industry classification system had an important practical significance for other related research; (2) China's marine industry sea uses were mainly in traditional marine industries, such as fishery, transportation, engineering and construction, which distributed centrally in space; (3) The sea structure diversification index of China's marine industry was generally low, and the inter-provincial difference of ocean space resource use economic output value was obvious; (4) The economic efficiency of marine space resource use was basically positively correlated with the diversification index.
Optimum conditions for the determination of 10 main elements in marine sediments by the fused bead-X-ray fluorescence spectrometry
Xuan SUN, Jin-ming SONG, Ying YU, Ling-ling SUN, Yao LIU
Accepted Manuscript  doi: 10.12111/j.mes.20190116
[Abstract](867) [FullText HTML](904) [PDF 629KB](2)
Abstract:
In this thesis, a method for the determination of major elements (including Na2O, MgO, Al2O3, SiO2, P2O5, K2O, CaO, Fe2O3, MnO, and Ti2O) in marine sediments by the X-ray fluorescence (XRF) spectrometry is optimized. In the experiment, the Li2B4O7-LiBO2 mixture [m(Li2B4O7):(LiBO2)=67:33] is adopted as the flux, LiNO3 as the oxidant, and LiBr as the mold discharging agent. Under the above condition, the sample was prepared by melting. Meanwhile, the calibration curves were constructed, through applying the certified reference materials, such as soil, stream sediment, and marine sediment by X-ray fluorescence spectrometer. Moreover, the effects of flux, dilution ratio, remolding agent, melting temperature, and melting time on the determination results, were systematically studied. The results show that high-quality fuses were obtained under the following conditions: the sample and the mixed flux was uniformly mixed; the melt dilution ratio is 1:10; the mixture was pre-oxidized at 700 °C for 200 seconds and melted at 1,050 °C for 10 minutes. The loss on ignition (LOI) detection was not necessary while a relative large dilution ratio combined unknown LOI correction was adopted, which greatly simplified the test method. Testing with the marine sediment standard substance GBW07314, we find that the relative standard deviation (RSD) of each component content was 0.32%~2.05%, and the detection limit of the method was 70~270 ug/g. In the accuracy of the artificial standard sample, there was no significant difference between the measured value and the recommended value. The results reveal that the method is accurate and reliable, which can be utilized for accurate quantitative analysis of geological and geographic stream sediments, rocks, minerals, soils, and other samples., rocks, minerals, soils, and other samples.
Overview on indicator bacterial concentration prediction model of bathing beaches
Hui-ling HUANG, Hong-xia MING, Jing-feng FAN, Bin WANG
Accepted Manuscript  doi: 10.12111/j.mes.20190196
[Abstract](1240) [FullText HTML](959) [PDF 560KB](4)
Abstract:
It will help to ensure the safety of the bathing water quality and avoid the time-lag of the traditional monitoring method affecting the effectiveness of the beach management using a concentration prediction model for fecal indicator bacteria (FIB). And it also can provide the health guidance and technical supporting to the public and beach manager in timely. Based on the technical development status of the indicator bacterial concentration prediction model of bathing beaches, the model construction methods were comprehensively reviewed in this paper, and the characteristics, application scopes, advantages and disadvantages of various models were also summarized. In addition, the difficulties and bottleneck in constructing the indicator bacterial concentration prediction model in bathing beaches of China were analyzed. Finally, the development trend of the model was prospected, which will provide a valuable reference for administrative department of China.
A laboratory experimental research into the bioturbation effects of Sinonovacula constricta on the content of nitrogen forms in columnar sediments.
Shuo ZHANG, Ming-rui TANG, Ji-kun LU, Hong HUANG
 doi: 10.12111/j.mes.20190092
[Abstract](1120) [FullText HTML](768) [PDF 734KB](4)
Abstract:
The bioturbation effects of Sinonovacula constricta on the transformation of different forms of nitrogen in sediments were studied based on a laboratory experiment in this study. Two treatment groups and a control group were set up according to different biological densities (99 ind/m2, 249 ind/m2), and a 20-day laboratory experiment was carried out in the condition of water temperature 23℃, salinity 26 psu, and pH8. The columnar sediments were stratified and cut from top to bottom, and the changes of different forms of nitrogen content in the sediment were analyzed. Results showed that the content of total nitrogen (TN) in the sediment increased after the bioturbation of S. constricta. The content of non-transferable total nitrogen (NTN) increased by 30.94%, and the content of transferable total nitrogen (TTN) decreased by 20.57%. The content of organic-sulphide form (OSF-N) was the highest among the four forms, accounting for 9.31% of TN, which was the main form of TTN. The content of carbonate form (CF-N) was the lowest and only 2.77% of TN. The ion exchange form (IEF-N) and the iron manganese oxide form (IMOF-N) accounted for 3.39% and 3.06% of TN, respectively. Above all, the bioturbation of S. constricta promoted the conversion of OSF-N to other forms, as well as the conversion of transferable total nitrogen to non-transferable total nitrogen.
Study on status and management of Antarctic ecological environment
Yun-ze GAO, Rui-jing LI, Shuai-chen JIN, Hui GAO, Chao HOU, Sheng-kai CAO, Guang-shui NA
Accepted Manuscript  doi: 10.12111/j.mes.20190075
[Abstract](1182) [FullText HTML](1466) [PDF 784KB](17)
Abstract:
As the last ‘pure land’ in the world, the Antarctic attracts many countries’ interest because of rich natural resources as well as inherent scientific and aesthetic values. Under the influence of factors such as global warming and human activities (scientific research, commercial fishing, tourism, etc.), the Antarctic ecological environment problems such as regional increase/decrease of Antarctic sea ice area; fluctuation of Antarctic species; and aggravating of environment pollutants detected are emerging. However, the current management policies based on the "Antarctic Treaty System" cannot fully regulate human activities due to issues such as abstraction of ideas. The environmental protection in Antarctic is becoming increasingly severe. International community should develop interdisciplinary international collaboration, strengthen the link between scientific research and management and improve management policies of Antarctic ecological environment so as to minimize the destruction on the Antarctic ecological environment.
Production of transparent exopolymer particles from two marine diatoms and its ecological significance
Kang-li GUO, Jie CHEN, Xiao-dong WANG, Yan WANG
 doi: 10.12111/j.mes.20190053
[Abstract](9819) [FullText HTML](9993) [PDF 968KB](35)
Abstract:
The transparent exopolymer particles(TEP), a kind of transparent colloidal particulate matter, consists of extracellular polysaccharides. TEP is of great significance to the carbon cycle of marine ecosystems. In this study, two marine diatoms, Ditylume brightwelii and Chaetoceros affinis, were studied. The TEP concentration, the relationship between TEP and Chlorophyll a (Chl a) and the C∶N ratio of TEP were studied at different growth phases. The results showed that TEP was produced by both species during the whole growth phases, and TEP concentration was different in different growth phase. The maximum TEP concentration of D. brightwelii and C. affinis was produced in the exponential phase and the decline phase, respectively. The maximum TEP concentration per cell volume and per Chl a of C. affinis was 184.91±14.03 fg Xeq/μm3 and 38.06±4.96 μg Xeq./μg Chl a, and were 16 and 5 times higher than the values obtained from the D. brightwelii. The analysis of the relationship between Chl a and TEP in two diatoms showed that the function relationship between TEP=α (Chl a) β was presented in the exponential phase (D. brightwelii: R2=0.98; C. affinis: R2=0.80). The TEP C∶N ratio of both diatoms was higher than the Redfield ratio (C∶N=106∶16). It indicates that the generation of TEP was difference between species, and the growth phase significantly affects the efficiency of TEP production. The high carbon concentration of TEP show that TEP production contributes significantly to the ocean carbon cycle.
The vertical distribution patterns of heavy metals in a sediment core of the Jiaozhou bay and their controlling factors
Dong-hua ZHANG, Zhao-zhen LV, Zhu-feng SHAO, Xiang-huai KONG, Hui-wang GAO, Yan-bin LI
 doi: 10.12111/j.mes.20190090
[Abstract](9376) [FullText HTML](9441) [PDF 826KB](21)
Abstract:
A sediment core was collected in the Jiaozhou bay in 2011. The concentrations of eight heavy metals (mercury (Hg), arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), lead (Pb) and zinc (Zn)) in the sediment core from 0 m to 1 m were measured. These raw data were then utilized to calculate the enrichment factors (enrichment factors, EFs, represents the enrichment status of elements) of these metals. The results showed that both concentrations and EFs of these heavy metals presented a peak or had the highest value in the subsurface layer (at around 20 cm) of the sediment core. The age of sediment at such depth was estimated to be around 20 years using the reported sediment settlement rate. This indicates that the contamination of heavy metals in Jiaozhou bay sediment may be significantly affected by the high-intensity anthropogenic discharge of heavy metals into the Jiaozhou bay in the late 1980s and 1990s. Pearson correlation and multiple regression analyses were further performed to investigate the primary controlling factors for heavy metals in Jiaozhou bay sediment. The results suggest that the inter-annual variations of the eight common heavy metals may be controlled by different environmental factors in Jiaozhou bay sediment. In addition, the potential ecological risk index was calculated to evaluate the potential risks of these heavy metals in Jiaozhou Bay sediment and their historical variation trends. Mercury generally had a moderate risk in the Jiaozhou bay, and its risk has been increasing in recent years. This finding suggests that Hg should be put in the priority metal to be controlled in the Jiaozhou bay.
Distribution of dissolved gaseous mercury and reactive Hg and their controlling factors in the East China Sea in summer
Guo-yi CHENG, Lu-feng CHEN, Chang LIU, Yan-bin LI
 doi: 10.12111/j.mes.20190100
[Abstract](9029) [FullText HTML](8790) [PDF 795KB](13)
Abstract:
Dissolved gaseous mercury (DGM), reactive Hg (RHg), total Hg (THg) and dissolved Hg (DHg) concentrations were analyzed in the seawater of the East China Sea (ECS) during a cruise in June 2018. The distribution patterns of DGM and RHg and their controlling factors in the East China Sea (ECS) were investigated. The concentrations of DGM and RHg in the seawater were determined to be 151.3±75.9 pg/L and 0.8±0.7 ng/L, respectively. The ratios of DGM/THg, DGM/RHg and RHg/THg were calculated to be (4.5±2.5)%, (26.7±15.0)% and(21.6±14.8)%, respectively. DGM and RHg concentrations in the ECS water were significantly higher than that in most open oceans, but lower than or comparable to that reported in most coastal seas. Both DGM and RHg in the seawater presented a complicated spatial distribution pattern, with high concentration areas located in both nearshore shallow seawater, and offshore shallow and deep seawater. These results indicate that both species of Hg may be controlled by both the terrestrial input and in situ production/removal processes. As for the vertical distribution, the concentrations of DGM and RHg in the bottom seawater were observed to be the lowest, while comparable concentrations were observed at all the other sampling layers. Although highest THg concentration was observed in the bottom seawater of the ECS, DHg concentrations in the bottom seawater were slightly lower than those at the other layers. This may be a reasonable explanation of the lower RHg and DGM concentrations in the bottom water. Spearman’ correlation and multiple regression analyses suggest that RHg and dissolved oxygen (DO) concentrations may be the major controlling factors for DGM in the seawater, while RHg in the seawater may be controlled by DO.
Display Method:
Investigation and Research
Trophic upgrading of essential fatty acids by Oxyrrhis marina
Yu-ting WEI, Yan WANG, Xiao-dong WANG
2020, 39(3): 329-333.   doi: 10.12111/j.mes20200301
[Abstract](1493) [FullText HTML](432) [PDF 1276KB](67)
Abstract:
Heterotrophic dinoflagellates serve as an intermediate bridge connecting zooplankton and phytoplankton, and play a key role in material recycling and energy flowing in marine ecosystems.In this paper, fatty acid of heterotrophic dinoflagellate Oxyrrhis marina was analyzed after feeding on four phytoplankton, including Dunaliella tertiolecta, Heterosigma akashiwo, Phaeocystis globosa, and Navicula salinarum.Research shows that O.marina can feed on four kinds of phytoplankton, but ingestion rate on D.tertiolecta was higher than those on other three species.DHA (docosahexaenoic acid) was not observed in all prey, but found in the O.marina fed on them with the content up to (86.98±7.44) μg/mg C.These results indicate that O.marina can synthesize DHA independently, which means that O.marina had the ability to upgrade the nutritional value of phytoplankton, thereby efficiently delivery docosahexaenoic acid to the next trophic level.
Seasonal variation of the coastal currents in the Northern Bohai Strait
Chuan-xi XING, Qian ZHAO, Xue-feng CAO, Yong-jun YANG, Li-na SONG
2020, 39(3): 334-339.   doi: 10.12111/j.mes20200302
[Abstract](1548) [FullText HTML](532) [PDF 3778KB](67)
Abstract:
The seasonal variation of the coastal currents in the northern Bohai Strait has been investigated using long time-series current observational data.The mean current velocities in winter and summer both showed the largest values in the surface layer and the lowest values in the middle layer.In the bottom layer, the current velocities increased slightly comparing to the middle layer.In both seasons, the currents in the bottom layer showed shoreward cross-isobathic components, which suggested the shoreward movement of the bottom water existed all the year round.The current data were then analyzed with vector Empirical Orthogonal Function.The spatial mode of EOF1 showed that in both summer and winter, the currents mainly fluctuated along the isobaths.In winter, currents of the whole vertical profile varied in phase, and in summer the currents in the surface layer varied out of phase with the currents in the other layers.Surface wind was one of the forces in generating the currents in the study area, but it was not a dominant one.In winter, the current fluctuations lagged the wind by 18 hours and the current was significantly correlated with the wind of 6 days fluctuation period.In summer, the current lagged the wind by 9 hours and current was significantly correlated with the wind of 0.8 days fluctuation period.
Spatiotemporal association patterns between marine net primary production and environmental parameters in a view of data mining
Qiang SUN, Cun-jin XUE, Jing-yi LIU, Xing LIU, Ya-lan HONG, Cheng-bin WU
2020, 39(3): 340-347, 352.   doi: 10.12111/j.mes20200303
[Abstract](524) [FullText HTML](339) [PDF 6335KB](37)
Abstract:
Global marine net primary production (NPP) shows different spatiotemporal distributions driven by marine environmental parameters, however, the spatiotemporal association patterns among the marine environmental parameters and NPP are still unclear.Thus, this paper explores the spatiotemporal association patterns among NPP and sea surface temperature (SST), sea level anomalies (SLA), sea surface precipitation (SSP), mixed layer depth (MLD), El Niño-Southern Oscillation (ENSO) events, using the remote sensing products covering a 19-year period from Jan 1998 to Dec 2016.The main results are as followings:1) In the western equatorial Pacific Ocean (PO), an abnormal decrease of SLA, an abnormal decrease of SSP, or an abnormal increase of MLD increases the supply of nutrients to phytoplankton in the euphotic zone, which results in an abnormal increase of NPP.2) In the middle equatorial PO, an abnormal increase of SLA, an abnormal increase of SSP or an abnormal decrease of MLD reduces the supply of nutrients to phytoplankton in the euphotic zone, which results in an abnormal decrease of NPP.3) In the eastern equatorial PO, an abnormal increase of SLA or an abnormal increase of SSP reduces the supply of nutrients, and an abnormal increase of MLD lower the micronutrient iron in the surface oceans, all of them could lead to an abnormal decrease of NPP.4) In the south PO, the abundance of phytoplankton cell is a negative correlation with the nutrition concentration, thus, an abnormal increase/decrease of SST could improve/reduce the photosynthetic efficiency of phytoplankton, an abnormal increase/decrease of SLA reduces/ improves the supply of nutrients to phytoplankton, and those abnormal changes causes an abnormal increase/decrease of NPP.5) El Niño events are more likely to result in the anomalous variations of NPP compared to the La Niña events.
Oxidative stress toxicity effects of radioactive nuclide 137Cs、90Sr on liver cells of Cynoglossus Semilaevis
Hui GAO, Rui-jing LI, Jin-qiu DU, Zi-wei YAO
2020, 39(3): 348-352.   doi: 10.12111/j.mes20200304
[Abstract](1430) [FullText HTML](351) [PDF 2697KB](12)
Abstract:
To analyze the biotoxicity of radioactive nuclide 137Cs and 90Sr, liver cells of cynoglossus semilaevis(HTLC) were exposed to DMEM-F12 with a series of concentrations of 137Cs and 90Sr, respectively.MTT assay was used to evaluate the cytotoxicity of 137Cs and 90Sr.Lactate dehydrogenase (LDH), reactive oxygen species (ROS) and superoxide dismutase (SOD) activity were applied to explore the oxidative damage of 137Cs and 90Sr on HTLC.The results indicated that cell activity was significantly promoted by both 137Cs and 90Sr, especially under their low concentration (p < 0.01), but the promotion was increased first and decreased later with the increase of 137Cs and 90Sr.The cell membrane was damaged significantly only with low concentration of 90Sr (p < 0.05), while 137Cs made no damage on HTLC cell membrane.ROS contents displayed significant difference at the lower 137Cs concentration and all the 90Sr exposure groups (p < 0.05), whereas SOD activity displayed significant difference in all 137Cs and 90Sr exposure groups (p < 0.05).The results confirmed that 137Cs and 90Sr was not significantly toxic to HTLC in the environmental activity, and HTLC was able to adjust itself to maintain normal physiological function.However, 90Sr can induce oxidative stress in HTLC and damage cell membrane, which may affect the metabolic pathways and lead to potential toxicity in HTLC.
Fugacity approach to evaluate sediment-seawater diffusion of perfluoroalkyl substances in the Dalian bay
Xiao-yue GU, Guang-hui DING, Huan-huan XUE, Jing ZHANG, Zi-wei YAO, Ying WANG, Lin-ke GE
2020, 39(3): 353-358.   doi: 10.12111/j.mes20200305
[Abstract](1830) [FullText HTML](387) [PDF 3621KB](15)
Abstract:
Investigation on the diffusion trend of pollutants at the sediment-water interface is very valuable for their environmental risk assessment.Based on concentrations of perfluoroalkyl compounds (PFASs) in seawater and sediment samples from the Dalian bay, the diffusion trend of PFASs at the sediment-water interface and the spatial variability of PFASs were investigated by using the fugacity fraction (ff) and the coefficient of variation (Cv), respectively.Furthermore, the effect of organic carbon content on the diffusion trend was analyzed with the response coefficient (RC).The results show that the total concentration of 9 PFASs in seawater and sediments of Dalian Bay is moderately variable.The variation of concentration in the sediment was slightly larger, which might be affected by historical pollutants and pollution accidents.During the diffusion process at the sediment-water interface, the perfluoroalkyl sulfonic acids and perfluoroalkyl carboxylic acids exhibited the similar diffusion characteristics that was the ff value gradually decreased with increasing chain length of PFASs.Short-chain PFASs tended to exist in seawater of the Dalian bay, while the long-chain PFASs tended to diffuse into sediments.The organic carbon content is an important parameter affecting the diffusion trend of PFASs at the sediment-water interface, and the effect on long-chain PFASs was more obvious than that on short-chain PFASs.As a kind of persistent organic pollutant, PFOS is mainly in equilibrium at present in the Dalian bay.
Distribution characteristics of the porewater inorganic nitrogen and their benthic exchange fluxes in coastal wetlands of Daya bay
Chun-yu ZHAO, Ling ZHANG, Zhi-jian JIANG, Yun-chao WU, Zhi-xin KE, Xiao-ping HUANG
2020, 39(3): 359-366.   doi: 10.12111/j.mes20200306
[Abstract](1544) [FullText HTML](471) [PDF 2172KB](28)
Abstract:
In order to study the spatial distribution of the inorganic nitrogen in the sediment and their environmental effects, the contents and the exchange fluxes of DIN at sediment-water interface have been studied during March (dry season) and August (wet season) in 2017 in coastal wetland in Daya bay.The results showed that the average nitrogen content of overlying water near coastal wetland was far higher than that in Daya bay offshore water, which indicated the influence of human activities on the wetland was relatively serious.The river runoff is the main channel of nitrogen input.The average contents of nutrients (NH4-N、NO3-N and NO2-N) were 770.60、7.63 and 7.39 μmol/L in the sediment porewater, respectively.NH4-N was the major component and accounted for 85.82%~99.67% of DIN. The estimation of the sediment-water exchange fluxes indicated that the average fluxes of NH4-N、NO3-N and NO2-N were 0.09、-0.18 and 0.36 mmol/(m2·d), respectively.Generally, the average exchange flux was 0.41 mmol/(m2·d) in dry season, as the source of DIN providing a lot of nitrogen into the overlying water.The sediment became the sink of DIN in wet season, with average flux of -0.23 mmol/(m2·d).Comparing with the original experiment group, it was found that the average exchange fluxes of NH4-N、NO3-N and NO2-N in the sterilized group decreased by 76.5%, 23.7% and 50.3%, respectively.This indicates that microorganism plays a very important role in nitrogen transformation.
Characteristics of the sea surface temperature strong front in the Northern South China Sea
Jie YU, Guo-bao CHEN, Zhen-zhao TANG, Lei ZENG
2020, 39(3): 367-373.   doi: 10.12111/j.mes20200307
[Abstract](1793) [FullText HTML](327) [PDF 3410KB](27)
Abstract:
The paper analyzed sea surface temperature (SST) front in the South China Sea (SCS) based on satellite remote sensing monthly SST data from 2003 to 2017.The results show that SST fronts exist in the whole year.The region and strength of fronts reach peak in January, and then decrease until November, enhance again in December.There are three strong fronts (Qiongdong-Yuexi front, Qiongdong front, and Taiwan Bank front) and semi-strong fronts (Yuexi continental-slop front, and Southern Nansha Isalnds front) in the northern SCS.In January, the maximum strength of the three strong fronts are 0.036 ℃/km, 0.038 ℃/km and 0.068 ℃/km, and the generate probability of the two semi-strong fronts are larger than 75%.In November, all fronts disappeared except the three strong fronts.The Yuexi continental-slop front moves from continental shelf to slop and deep sea from January to April.The Southern Nansha Isalnds front locates in the south of Dongsha Islands in May.
Diversity of nirS-type denitrifying bacteria in the sediments from Hai river estuary
Chun-yan WANG, Dao-ming GUAN, Xiang-yu GUAN
2020, 39(3): 374-378.   doi: 10.12111/j.mes20200308
[Abstract](1597) [FullText HTML](411) [PDF 1868KB](8)
Abstract:
In order to study the diversity of denitrifying bacteria in Hai river estuary, three sediment samples were collected from the freshwater, mixed-water and seawater environments of Hai River estuary and analyzed using clone library and canonical correspondence analysis (CCA). A total of 154 valid nirS sequences were grouped into 66 OTUs based on 97% sequence similarity. The diversity indices of those libraries showed the highest diversity of denitrifying community in the seawater sample. The phylogenetic analysis showed that the nirS sequences were divided into seven Clusters, which were highly similar to those of denitrifying bacteria from sediments of estuary, eutrophied bay, wetland and aquaculture wastewater. CCA indicated that salinity, organic carbon and nitrogen nutrient were the major contributing parameters for the diversity and spatial distribution of denitrifying bacteria of Hai river estuary.
Phytoplankton community and changes after reclamation in Caofeidian coastal waters
Xi-han LIU, Yu-jue WANG, Ya-jun SHI, Hai-lan TIAN, Lin CHENG, Yan-xia WANG
2020, 39(3): 379-386.   doi: 10.12111/j.mes20200309
[Abstract](463) [FullText HTML](403) [PDF 2770KB](25)
Abstract:
Based on two surveys respectively in August 2013 and May 2014 in Caofeidian coastal waters, phytoplankton community, its correlations with environmental factors, and changes after land reclamation were analyzed.The results showed that totally 49 and 76 species were identified in spring and summer, respectively, in which diatoms dominated with rare dinoflagellates and chrysophytes.Phytoplankton abundance in spring ranged from 1.93×104 cells/m3 to 7.89×104 cells/m3, and dominant species included Paralia sulcata, Coscinodiscus subtilis, etc.; while in summer, it ranged from 5.85×104 cells/m3 to 5022.91×104 cells/m3, and dominant species were Eucampia zodiacus, Skeletonema costatum, etc.The distributions of phytoplankton abundance in spring and summer were similar with high abundances ordinarily observed in inshore waters.Temperature, salinity and nutrients were important factors controlling seasonal shifts and spatial variations of phytoplankton community.After land reclamation, the changes of Shannon-Wiener diversity index (H') and Pielou eveness index (J) showed spatial variations, which was related to nutrients redistribution due to hydrodynamic changes.The northeastern bay was seriously affected by reclamation.Freshwater and nutrients imported by rivers were hard to exchange outside, thus promoting the proliferation of E.zodiacus whose abundance reached 3725.58×104 cells/m3 in summer, which suggested that the bay tended to be threatened by red tide.
Exchange fluxes of nutrients across sediment-water interface in the Muping Marine Ranch and its adjacent waters in autumn
Tian-ci GAO, Xue-lu GAO, Qian-guo XING, Jian-min ZHAO
2020, 39(3): 387-392.   doi: 10.12111/j.mes20200310
[Abstract](665) [FullText HTML](331) [PDF 2128KB](8)
Abstract:
In this research, the surface sediment samples were collected from the Muping Marine Ranch and its adjacent area in November 2017.The exchange fluxes of nutrients across the sediment-water interface were estimated by a laboratory incubation method.In addition, the effects of dissolved oxygen and temperature on the fluxes were also studied.The results indicated that the average exchange fluxes of NO2-N, NO3-N, NH4-N and PO4-P across sediment-water interface were 1.01, -181.91, -268.41 and -45.69 μmol/(m2·d), respectively.The sediments acted as a "source" of NO2-N and a "sink" of NO3-N, NH4-N and PO4-P.Both dissolved oxygen and temperature had obvious influence on the fluxes.The results showed that the fluxes of NO2-N, NH4-N and PO4-P were higher in the aerobic situation than in the anoxic situation, while that of NO3-N showed the opposite trend; the fluxes of NO2-N, NO3-N and NH4-N were higher at a higher temperature, but that of PO4-P was opposite to them.
A morphological analysis of tidal creek in the Yellow River Delta based on remote sensing
Yu-an LIU, Pi-fu CONG, Jin LI, Bao-quan WEI, Jin DAI, Cheng-wei HAN
2020, 39(3): 393-398.   doi: 10.12111/j.mes20200311
[Abstract](476) [FullText HTML](405) [PDF 1813KB](13)
Abstract:
Combing remote sensing images and field observation data, we analyzed the changes of coastal tidal creek morphology from 1976 to 2016 in the Yellow River delta. The results showed that: (1)The area of tidal flat showed a trend of decline, especially areaⅡhas almost demise, which was mostly being transformed into construction land and farmland, etc.(2)The tidal ditchesin the study area were divided into three levels, and the number of tidal ditches of each level did not show obvious regularity. The total number of tidal creeks in three periods was consistent with the variation trend of the number of tidal ditches at all levels. (3) The average length of thetidal creeks decreases successively in turn, the spatial distribution of tidal creeks varies greatly, and the development of tidal creeks is obviously inhibited by intensive human activities.(4) The density of tidal groove increases successively over time, showing the maximum is 0.971 km/km2, in 2016. Over all, the average curvature of tidal creeks of all the 5 phases is 1.273, which the developed curvature is relatively small, with the maximum of 1.716, in 2016.The branching rate of tidal groove in 5 phases increases successively and the maximum is 0.363 /km2 in 2016. (5) No significant difference of the level of tidal creek oscillation was detected, with showing the swing scopes of 4 periods are 1.13 km, 1.31 km, 0.93 km and 1.19 km, respectively.
Monitoring and evaluation of mangrove wetland pollution in Dongzhai harbor of Hainan
Yu-nan YANG, Jing LIU, Thiri Myat
2020, 39(3): 399-406.   doi: 10.12111/j.mes20200312
[Abstract](601) [FullText HTML](339) [PDF 3080KB](10)
Abstract:
In recent years, the ecological environment of the mangrove wetland in Dongzhai harbor, Hainan has been seriously polluted.In addition, the marine Sphaeroma had erupted in the protected area in 2012, causing serious damage to the mangroves.Therefore, it is necessary to conduct pollution monitoring, pollution source analysis, ecosystem health diagnosis, assessment and early warning of mangrove wetland in Dongzhai harbor, Hainan.On the basis of monitoring and ecological investigation of the mangrove wetland in Dongzhai harbor for five consecutive years, this paper used single factor pollution index, Nemero index and comprehensive trophic level index to evaluate the pollution and change characteristics of the mangrove area in Dongzhai harbor and explore the causes of major pollutants.The corresponding countermeasures and suggestions were put forward for the recovery of the system.The results showed that the pollution of mangrove wetland in Dongzhai harbor, Hainan had experienced a gradual reduction from 2013 to 2015, and a further serious pollution from 2016 to 2017.According to the three methods of pollution assessment, the most serious pollution and eutrophication places were Tashi, Shanwei village and Sanjiang town in recent two years, and the main water pollution was organic matter and nitrogen pollution.Relevant management departments should strengthen supervision and take appropriate measures to control the number of high-level pond shrimp culture, implement measures such as returning ponds to forests and shrimp pond culture wastewater treatment, so as to restore the mangrove ecosystem in Dongzhai harbor, Hainan.
Analysis of the current statue of the sea area usage based on data mining—taking the coastal waters of Liaoning province as an example
Jian-li ZHANG, De-rui SONG, Jia-lan CHU, Jian-hua ZHAO, Chao ZHOU
2020, 39(3): 407-412.   doi: 10.12111/j.mes20200313
[Abstract](462) [FullText HTML](334) [PDF 4256KB](13)
Abstract:
The current status of sea area use in coastal waters has become an important basis for sea area management and land reclamation.Based on the current status data of the national sea area dynamic monitoring and management system, the paper proposed the mining process of the current use data of the sea area by the spatial data mining method of GIS.Taking the coastal waters of Liaoning province as an example, the conclusions as following:(1) The potential usage of coastal waters in Liaoning was large, but there are still unidentified seas.(2) The fisheries were the main use type in coastal waters of Liaoning, and the sea using mode is mainly open farming.(3) The deep sea area have been used in the coastal waters, which were mainly bottom sowing.(4) The distribution of fishery in the coastal waters is concentrated, and the using mode is a regular band distribution pattern from land to sea.(5) The phenomenon of unconfirmed use of seas has been significantly reduced in Liaoning province, and the scale of deep sea bottom aquaculture has been expanding in the past five years.
Pollution survey and distribution characteristics research of PBDEs in Tianjin typical coastal sea areas of Bohai Bay
Xiao-ran CHEN, Yan-zhen CHEN, Jian-bo TU, Chun-peng ZHANG, Wen-sheng GAO, Yao GONG
2020, 39(3): 413-418.   doi: 10.12111/j.mes20200314
[Abstract](435) [FullText HTML](309) [PDF 2253KB](5)
Abstract:
In this paper, through detailedly analyzing the different medium samples collected in Tianjin typical coastal sea areas of Bohai Bay, at the same time, the pollution survey and distribution characteristics research of PBDEs is thoroughly discussed.The PBDEs content and the distribution of various homologues are analyzed by GC-MS.The results indicate that:(1) the PBDEs content is ranged from 43.8 ng/L to 93.3 ng/L in seawater, ranged from 15.9×10-9 to 37.9×10-9 (dry weight) in marine sediments and ranged from 6.19×10-9 to 34.8×10-9 (dry weight) in marine organisms.While the average concentration separately is 59.4 ng/L, 22.8×10-9 (dry weight) and 19.4×10-9 (dry weight).(2) Marine shellfish in three marine organisms have the strongest enrichment ability to PBDEs, while marine fish have the weakest enrichment ability to PBDEs.Low brominated homologues were detected as the main component in biological samples, while high brominated homologues (mainly BDE-209) were found in environmental media.(3) Compared with other coastal sea areas in China, the concentration of PBDE in seawater is slightly higher than that in the Pearl River estuary, and the concentration in sediments and organisms is at the same level.The study of PBDEs pollution in Tianjin offshore waters and similar persistent pollutants and the possible harm to human beings need to be further strengthened.
Preliminary research of intertidal macrobenthic community structural features in Geligang, Liaohe estuary in summer
Gui-ze LIU, Yan-bin GU, Jin-qing YE, Ji YU, Jin-ying XU, Hao ZHANG
2020, 39(3): 419-425, 437.   doi: 10.12111/j.mes20200315
[Abstract](446) [FullText HTML](365) [PDF 4731KB](9)
Abstract:
An investigation of macrobenthos of the intertidal zone was reported in this paper, which was carried out in Geligang, Liaohe estuary during August 2013.5 sections were set, and 6 stations are set for each section.Base on this, horizontal structures of the community species, density and biomass were analyzed.Biodiversity index, evenness index, cluster analysis, and ABC functions were carried out to describe the community structure.52 species of Macrobenthos were found in the 5 sections.The most species including 33 taxes appeared in section T2 on the northeast and the least species including 14 taxes appeared in section T5 on the south.The highest density and biomass occurred in section T4 on the northwest and the lowest density and biomass occurred in section T3 on the north.The community of each station can be divided into 4 categories according to the cluster analysis.ABC functions show that the T2, T3, and T5 sections are relatively stable, and suffered lower disturbance.On the contrary, T1 and T4 sections are highly interfered.
The stability evaluation of lagoon-barrier coastline, Luanhe delta
Xiu-jin LIU, Rong-rong XING, Ruo-feng QIU, Wen-chao CHEN
2020, 39(3): 426-431.   doi: 10.12111/j.mes20200316
[Abstract](439) [FullText HTML](355) [PDF 1425KB](9)
Abstract:
Luanhe delta has important values in the field of teaching and scientific researches as the most special feature of lagoon-barrier coastline, whose coastline always stays in the state of dynamic changes with the human influence.For calculating the axial length change, annual mean change rate and stability index of coastline for lagoon-barrier in recent years, furthermore, analyzing the stability of sandbar coastline, we extract coastline datum from remote sensing images of 1987, 2000 and 2014.This research reveals that the coastline of lagoon-barrier in Luanhe delta mainly erodes toward land and its maximum axial length is nearly 400 m, whose erosion rate nearly reaches 30 m/a.The ratio of erosion degree from lightly to severe can reach 87%, the stability index of islands that less than 0.4 reaches 74%.After that, more researches have been carried out and indicate that reservoirs construction in the middle and upper reaches of the Luanhe reduce terrestrial sediment supply, which is the main reason that for these changes.Besides, constructions of ports and culture ponds also weaken coastline stability.
Study on spatial-temporal distribution of specific growth rate of Prorocentrum donghaiense Lu based on SST
Yan-long CHEN, Li-li SONG, Su-qing XU, Jian-hua WAN, Xi-zhen LIU, Jian-hua ZHAO, Zi-zhu WANG
2020, 39(3): 432-437.   doi: 10.12111/j.mes20200317
[Abstract](442) [FullText HTML](329) [PDF 3436KB](6)
Abstract:
The spatial-temporal distribution of specific growth rate of P.donghaiense was simulated based on the relationship between temperature and growth rate, using the monthly average sea surface temperature (SST) from 2005 to 2016 in the coastal waters of the East China Sea.Monthly and inter-annual variation of the specific growth rate were analyzed and compared with red tides in frequency.The results showed that the average specific growth rate was higher from April to June every year, which was consistent with the times of red tides in the coastal waters of the East China Sea.On average, the frequency of red tides in May accounted for about 69 % of the year, while was consistent with the monthly specific growth rate.Red tide caused by P.donghaiense usually occurs in warming months and the frequency of it is positively correlated with temperature increase.The times of red tides were consistent with the inter-annual variation of the specific growth rate of P.donghaiense except for individual years in the coastal waters of the East China.The result can provide a reference for further quantitative analysis of marine ecosystem and its response to climate change.
Techniques and Methods
Information extraction of Ulva Prolifera from coastal landscape using UAV m ultispectral remote sensing images
Dong-xue LI, Zhi-qiang GAO, Wei-tao SHANG, Xiao-peng JIANG, De-bin SONG, Yuan-yuan ZHANG
2020, 39(3): 438-446.   doi: 10.12111/j.mes20200318
[Abstract](475) [FullText HTML](404) [PDF 7276KB](15)
Abstract:
Since 2007, green tides (also called Ulva prolifera) occurred every summer in the Yellow Sea, causing ecological problems in the coastal environment of Shandong Peninsula.A large number of Ulva prolifera on shore will rot and stink if not handled in time, which seriously affects the tourism and the health of residents in coastal landscape.In order to improve the accuracy of monitoring green tide disasters, and to improve the efficiency of the cleaning up and disposal of Ulva prolifera at key prevention and control area, In this study, the high-precision image of UAV is used to monitor the green tide disaster in Yintan landscape of Rushan City.With the spectral characteristics of Ulva prolifera and coastal vegetation measured by spectroradiometer, four vegetation indices were used to analyze and identify the Ulva prolifera and coastal vegetation, and to verify the extraction of Ulva prolifera and coastal vegetation under different vegetation indices, and based on this extraction method, the biomass of coastal green tide algae was estimated.The results show that in the red-edge band, Ulva prolifera and coastal vegetation can be distinguished. MTCI(MERIS terrestrial chlorophyll index) is more suitale, with the accuracy of 91.3%, followed by SRredge, NDVIredge and MSRredge, with the accuracy of 85.3%, 83.8% and 81.2%, respectively; Estimation model of biomass based on MTCI index showed that about 600 tons of Ulva prolifera were estimated in 300 m study area.An effective method for dynamic monitoring and cleaning up of green tide disaster is provided.
Design and implementation of the comprehensive information service platform for early warning and monitoring of sea ice disasters
Ning XU, Shuai YUAN, Wen-qi SHI, Li-na SONG, Yu-xian MA, Yuan CHEN, Yong-jun YANG, Xue-qin LIU, Wei-bin CHEN
2020, 39(3): 447-452.   doi: 10.12111/j.mes20200319
[Abstract](612) [FullText HTML](421) [PDF 3313KB](14)
Abstract:
Sea ice monitoring and early warning information products are important service targets in sea ice monitoring and analysis.Sea ice disasters are one kind of the important marine disasters in the Bohai Sea and the North Yellow Sea.According to the requirements of government departments, marine enterprises, the public, research personnel and other users, the construction scheme of comprehensive information service platform for early warning monitoring of sea ice disasters was explored in the study.The constructed comprehensive information service platform can realize the main functions of query, analysis, dynamic display and release of ice situation and disaster data as well as sea ice disaster risk analysis and accident emergency response.With the constructed platform, offshore oil platforms, coastal nuclear power plants, high value-added aquaculture enterprise, and other typical sea-related users can achieve ice situation monitoring and dynamic management of sea ice risk information and the transmission of disaster information in relevant administrative areas.
Simultaneous determination of molybdenum and other heavy metals in Mytilus edulis by inductively coupled plasma mass spectrometry with quadrupole collision cell technology
Ling-ling SUN, Jin-ming SONG, Yao LIU, Ying YU, Xuan SUN
2020, 39(3): 453-459.   doi: 10.12111/j.mes20200320
[Abstract](528) [FullText HTML](362) [PDF 1341KB](7)
Abstract:
The method for simultaneous determination of 12 heavy metals including Mo, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Cd and Pb in Mytilus edulis was established by ICP-MS with quadrupole collision cell technology, and using microwave digestion technique.The application of kinetic energy discrimination (KED) could eliminate the interference of polyatomic ions effectively.45Sc, 89Y, 115In and 209Bi as internal standard elements were also used to compensate matrix effect and signal drift, and the optimized conditions and technical procedures of the determination were established.The method of KED-ICP-MS for determination of heavy metals in Mytilus edulis was satisfactory, the relative standard deviations were between 0.66% and 3.91%, the recovery rate of the method was in the range of 86.2%~102.0%, and the detection limit ranged from 0.001×10-9 to 0.118×10-9.The results indicated that the method was convent, sensitivity, accurate and precision.It was suitable for determination of these elements in marine organisms, and also provided scientific foundation for safety assessment and quality control.
Comparative studies on remote sensing techniques for red tide monitoring in Bohai Sea
De-juan JIANG, Kun WANG, Yun XIA
2020, 39(3): 460-467.   doi: 10.12111/j.mes20200321
[Abstract](507) [FullText HTML](348) [PDF 3824KB](21)
Abstract:
In Bohai Sea, one of the red-tide worst-hit areas of China, the red-tide disasters occurred frequently and aggravated in recent years.Effectively monitoring the processes of the red tide from happening to extinction is of great significance for Bohai Sea.Based on MODIS (moderate resolution imaging spectroradiometer) data, five methods including the chlorophyll concentration anomalies, the red tide index, the Rrs band ratio method, the red band difference, the Karenia brevis bloom index have been comparatively analyzed to examine their availability for red tide extraction in Bohai Sea.The results showed that these five methods could effectively extract the red tide information in the offshore area of Tianjin Binhai tourism area.Not only the range but also the spatial distribution of remote sensing detection agreed with the fact.In contrast, the red tide extraction by these five methods indicated a distinct difference in the offshore area of Qinhuangdao area, which was relatively reasonable for the chlorophyll concentration anomalies and the band ratio method.However, no matter what the method was used, the field survey data or ERGB (enhanced red-green-blue) composite was necessarily combined to validate the performance of red tide extraction at different times or in different regions.
Application of UAV LiDAR system in sandy coast monitoring
Xing-guo GAO, Zi-wen TIAN, De-ming MA, Yan-xiong LIU, Wen-xue XU
2020, 39(3): 468-472.   doi: 10.12111/j.mes20200322
[Abstract](515) [FullText HTML](365) [PDF 3453KB](14)
Abstract:
In this study, a new monitoring method was proposed based on the UAV LiDAR system, in conjunction with the coast dynamic changes and traditional monitoring modes.The basic principles and processes of the monitoring methods were analyzed and described, and we set the Ten-thousand-meters sandy beach in Haiyang as the research area to test them.For fulfilling the requirement of the monitoring method, we obtained the DEM data of the coastal zone and also verified the accuracies of the monitoring by the ground characteristic points and beach topographic profiles.The monitoring results indicate that (1) this method suits well for the coastal erosion monitoring over short-term window, and (2) it owns enough high accuracies for the monitoring of coastal dynamic variations.We anticipate that this method can be widely applied in coastal monitoring.
Review
Analysis of physiology and regulation mechanism of Ulva under stress
Zhong-shan ZHANG, Xiao-mei WANG, Feng LIU, Zhi-hong YANG, Xiang WU
2020, 39(3): 473-479.   doi: 10.12111/j.mes20200323
[Abstract](630) [FullText HTML](557) [PDF 1979KB](28)
Abstract:
Ecophysiology of intertidal zone is one of the most complex and important fields in the marine environment.Algae are unavoidable to suffer from adverse environmental factors such as dry out, temperature, salt and alkali and radiation during the growth, development and reproduction.It is especially serious for alga Ulvaceae in the intertidal zone.In this paper, the research on physiological and biochemical characteristics, and resistance mechanism of Ulva species under the influence of abiotic stress factors such as high temperature, dry out, light, nutrient and heavy metals are reviewed, and the problems in this field in further are discussed.
Outbreaks of vibriosis in mariculture shellfish and its research progress
Ying-xue ZHANG, Jie SU, Jing-feng FAN, Shi-gen YE
2020, 39(3): 480-487.   doi: 10.12111/j.mes20200324
[Abstract](607) [FullText HTML](329) [PDF 1205KB](19)
Abstract:
Marine shellfish farming, as an important part of the national aquaculture, often suffers from severe diseases.As one of the most serious bacterial disease, the shellfish vibriosis is also restricting the shellfish aquaculture development.This paper introduces the pathogenic vibrio species and their outbreaks of marine shellfish at home and abroad.It also reviews three main vibrio species (including Vibrio parahaemolyticus, Vibrio alginolyticus, and Vibrio vulnificus) and their antibiotic resistance in marine cultured shellfish, and highlights the key environmental factors which can cause the vibriosis.What's more, the new strategy and the research direction of shellfish vibriosis were discussed and prospected in this paper.
Review on methanogens and methanotrophs metabolised by methane in wetland
Si-qi LI, Kun-peng ZANG, Lun SONG
2020, 39(3): 488-496.   doi: 10.12111/j.mes20200325
[Abstract](552) [FullText HTML](359) [PDF 1228KB](26)
Abstract:
Wetland, as a unique ecological system, is an important source of atmospheric methane (CH4), a potent greenhouse gas.Methane (CH4) emission from the wetland is a ultimate consequence of the production, transport and oxidation of methane.Meanwhile, the methane emission from the wetland is significantly influenced by microbial activities involving methanogens and methanotrophs.In this Review, we summarize current studies on the classification, characterization, metabolic pathways, molecular ecology of methanogens and methanotrophs and related environmental factors affecting methanogens and methanotrophs in the wetland, and the objectives of this Review are to promote studies on methanogens and methanotrophs in the wetland, and further provide the scientific guidance for regulating the methane emission in the wetland.
Research of the effect of heat transfer coefficients on thermal effluent
XU Bing-feng, ZHANG Ling-ling
2015, 34(1): 81-85.   doi: 10.13634/j.cnki.mes20150115
[Abstract](2556) [PDF 1206KB](48)
Environmental quality of petroleum hydrocarbons in the surface sediment of the oil and gas exploration zone in the central of Bohai Sea
LIU Ming, ZHANG Ai-bin, LIAO Yong-jie, FAN De-jiang
2015, 34(1): 12-16.   doi: 10.13634/j.cnki.mes20150103
[Abstract](2485) [PDF 1172KB](24)
Phylogenetic relationship of four Alexandrium tamaranse/catenella isolates from Southeast Chinese costal waters using rDNA sequences
WANG Zhao-hui, MA Chang-jiang, XU Zhong-neng
2015, 34(1): 1-5,35.   doi: 10.13634/j.cnki.mes20150101
[Abstract](2735) [PDF 1239KB](19)
Prediction method of Chlorophyll-a concentration in seawater based on extreme learning machine regression
ZHANG Ying, GAO Qian-qian
2015, 34(1): 107-112.   doi: 10.13634/j.cnki.mes20150119
[Abstract](2672) [PDF 1366KB](30)
Effects of short-term weathering on the N-alkanes fraction of crude oils in Bohai Sea
QIAN Guo-dong, LI Ming, QU Liang, REN Xu-he, CHI Jie
2015, 34(1): 23-28.   doi: 10.13634/j.cnki.mes20150105
[Abstract](2667) [PDF 1311KB](27)
Analysis of the Liaohe Estuary coastline changes basing on the remote sensing image in the past thirty years
WANG Jian-bu, ZHANG Jie, CHEN Jing-yun, SUN Wei-fu, MA Yi
2015, 34(1): 86-92.   doi: 10.13634/j.cnki.mes20150116
[Abstract](2648) [PDF 1281KB](32)
Effects of nitrogen sources on the growth and interspecific competition of Phaeodactylum tricornutum, Dunaliella salina and Karenia mikinotoi
LIANG Ying, SUN Ming-hui, LIU Chun-qiang, TIAN Chuan-yuan
2015, 34(1): 29-35.   doi: 10.13634/j.cnki.mes20150106
[Abstract](2574) [PDF 1290KB](24)
Study on the judicial authentication of marine environmental pollution damage and its evidentiary effect
LI Chen, ZHAO Yu-hui, SUN Pei-yan
2015, 34(1): 136-141.   doi: 10.13634/j.cnki.mes20150124
[Abstract](2751) [PDF 1089KB](49)
Variation of landscape pattern in Jiangsu Yancheng coastal wetland 1983~2013
LIU Li-wei, ZHANG Yin-long, WANG Hui, SHI Jian-qiao, PI Yu-fei
2015, 34(1): 93-100.   doi: 10.13634/j.cnki.mes20150117
[Abstract](2729) [PDF 1214KB](20)
Data standardization method for damage assessment of living marine resources based on GIS and expert evaluation method
LIU Xiu-ze, LI Yi-ping, WANG Ai-yong, YU Xu-guang, WANG Bin, GUO Dong, DONG Jing
2015, 34(1): 101-106.   doi: 10.13634/j.cnki.mes20150118
[Abstract](2528) [PDF 1285KB](27)
A primary study on the energy flow in the ecosystem of fishery ecological restoration area in HaizhouBay,Lianyungang
ZHANG Shuo, WANG Teng, FU Xiao-ming, ZHANG Hu
2015, 34(1): 42-47.   doi: 10.13634/j.cnki.mes20150108
[Abstract](2674) [PDF 1196KB](13)
Marine industry competition strategy analysis in coastal provinces in China based on miche theory
YUAN Qing-min, QIN Cong-cong, YANG Rui, NING Ning-ning
2015, 34(1): 126-130.   doi: 10.13634/j.cnki.mes20150122
[Abstract](2590) [PDF 1095KB](39)
Spatial and temporal variation and potential ecological risk evaluation of heavy metals in surficial sediments from the adjacent waters of the Oujiang Estuary
FENG Wei-hua, ZHU Gen-hai, ZHENG Fang-qin, WU Jia-lin, ZHOU Qing-song
2015, 34(1): 36-41.   doi: 10.13634/j.cnki.mes20150107
[Abstract](2562) [PDF 1285KB](14)
Identification of several fish eggs and larvae by DNA barcoding in Xiamen Water
ZHOU Mei-yu, CHEN Xiao, YANG Sheng-yun
2015, 34(1): 120-125,135.   doi: 10.13634/j.cnki.mes20150121
[Abstract](2671) [PDF 1280KB](38)
Design of the seawater quality spatial evaluation system based on multi-source data
LI Bing-nan, YNAG Jian-hong, JIANG Xue-zhong, WU Tong
2015, 34(1): 113-119.   doi: 10.13634/j.cnki.mes20150120
[Abstract](2617) [PDF 1169KB](23)
The seasonal variation of tetrodotoxin in Amoya caninus
ZHU Guo-ping, LIAO Jian-meng, WU Bin, YE Ning, LI Zhai-wang
2015, 34(1): 66-69,80.   doi: 10.13634/j.cnki.mes20150112
[Abstract](2693) [PDF 1176KB](19)
Discussion on the jurisprudential basis of the oil pollution compensation fund
WANG Ting-ting, YU Shi-hui
2015, 34(1): 131-135.   doi: 10.13634/j.cnki.mes20150123
[Abstract](2289) [PDF 1088KB](21)
The source and ecological risk assessment of Polycyclic Aromatic Hydrocarbons (PAHs) of surficial sediment in Laizhou Bay
ZHANG Ming-liang, LI Hui, XU Ying-jiang, DENG Xu-xiu, FU Xiang, LV Zhen-bo
2015, 34(1): 6-11.   doi: 10.13634/j.cnki.mes20150102
[Abstract](2493) [PDF 1135KB](17)
Discussion of the change trend of the seagrass beds in the east coast of Hainan Island in nearly a decade
CHEN Shi-quan, WANG Dao-ru, WU Zhong-jie, ZHANG Guang-xing, LI Yuan-chao, TU Zhi-gang, YAO Hai-jun, CAI Ze-fu
2015, 34(1): 48-53.   doi: 10.13634/j.cnki.mes20150109
[Abstract](2851) [PDF 1179KB](17)
Calculating the probability of oil spill at port oil reserve base
HUANG Yan-pin, LI Ying, ZHOU Xin, ZHANG Zhi-da, LIU Bing-xin, LIU Yu
2015, 34(2): 313-316.   doi: 10.13634/j.cnki.mes20150227
[Abstract](2026) [PDF 1144KB](23)
Seasonal changes of phytoplankton in Luan Estuary-Dapu Estuary in spring and summer
ZHANG Yue-ming, WANG Yu-liang, YANG Yang, HAN Xiao-qing, ZHANG Jian-da, GAO Wei-ming
2015, 34(1): 70-75.   doi: 10.13634/j.cnki.mes20150113
[Abstract](2589) [PDF 1351KB](13)
Distributions and risk evalutionof heavy metals in Dalian coastal areas
LI Wen-jun, ZONG Hu-min, YUAN Xiu-tang, WANG Li-jun, ZHANG Zhi-feng, LIU Guang-yuan
2015, 34(4): 508-512.   doi: 10.13634/j.cnki.mes20150406
[Abstract](1727) [PDF 1115KB](22)
Marine environmental risk assessment of the defense body
MA Qiang, LIN Jian-guo, LI Guang-zheng, YU Dong, SHEN Guang-yu
2015, 34(1): 142-146,155.   doi: 10.13634/j.cnki.mes20150125
[Abstract](2609) [PDF 1312KB](35)
Influence of single and combined cadmium and benzo(a)-pyrene on SOD, CAT activities and MDA content in the Polychaete Perinereis aibuhitensis
WANG Li-li, WANG Yi-nan, SONG Ying-ying, YAO Xiang, LI Yan
2015, 34(1): 17-22.   doi: 10.13634/j.cnki.mes20150104
[Abstract](2883) [PDF 1195KB](13)
The degradation of lignin and its effect on the application of lignin as an indicatorof terrestrial organic matter
QI Li-ming, ZHANG Ting, LAN Hai-qing, SHI Xiao-mei, FAN Ping-ping
2015, 34(1): 147-155.   doi: 10.13634/j.cnki.mes20150126
[Abstract](2485) [PDF 1184KB](23)
The progress of solid surface engineering on anti-biofouling
LI Ming-gan, LI Yan, ZHANG Fan, ZHU Jian-hang
2015, 34(1): 156-160.   doi: 10.13634/j.cnki.mes20150127
[Abstract](3333) [PDF 1121KB](34)
Numerical simulation of petroleum hydrocarbons transport in Bohai Sea and the influences on water quality
SHANG Xue-mei, LOU An-gang, SUN Xue-juan, SUN Yue
2015, 34(1): 58-65.   doi: 10.13634/j.cnki.mes20150111
[Abstract](2178) [PDF 1458KB](9)
Carbon stable isotopic fractionation associated with biosynthesis of fatty acids by marine microalgae under the stress of oil spills
LIU Yu, YAO Jing-yuan, LI Ying, FENG Tian-shu
2015, 34(1): 54-57,65.   doi: 10.13634/j.cnki.mes20150110
[Abstract](2211) [PDF 1173KB](16)
Stability prediction of inorganic nitrogen in water environment of Bohai Sea
LI Mian, LAN Dong-dong, LIANG Bin, ZHANG Hao, BAO Chen-guang, XU Yan, YU Chun-yan, MA Ming-hui
2015, 34(2): 161-165.   doi: 10.13634/j.cnki.mes20150201
[Abstract](2012) [PDF 1447KB](21)
The impact of rivers on the Chl a concentrations in coastal surface waters of the Laizhou Bay
ZHOU Feng-xia, GAO Xue-lu, ZHUANG Wen, ZHANG Jin-feng, LI Pei-miao
2015, 34(2): 184-189.   doi: 10.13634/j.cnki.mes20150205
[Abstract](2305) [PDF 1184KB](17)
Spatial distribution of marine invasive species in the large marine ecosystems of China
BAI Jia-yu, MA Xue-guang
2015, 34(3): 347-353.   doi: 10.13634/j.cnki.mes20150305
[Abstract](2038) [PDF 1145KB](25)
Review of the research on the classification of two types of ENSO events
DONG Yu-jia, MENG Xiang-feng
2015, 34(3): 473-480.   doi: 10.13634/j.cnki.mes20150326
[Abstract](2080) [PDF 1231KB](26)
Temporal-spatial characteristics and ecological risk assessment of pollutants in surface sediment of Jinzhou Bay
CHEN Zhao-lin, SUN Qin-bang, BAO Ji-ming, ZHAO Su-fang, WANG Yang, WANG Bing
2015, 34(4): 494-498.   doi: 10.13634/j.cnki.mes20150403
[Abstract](1615) [PDF 1239KB](27)
Analysis on the changes of continental coastline tortuosity in China recent 20 years
ZHANG Yun, ZHANG Jian-li, JING Xin-di, SONG De-rui
2015, 34(1): 76-80.   doi: 10.13634/j.cnki.mes20150114
[Abstract](2125) [PDF 1088KB](16)
Characteristics of the green tide disaster of east Shandong Peninsula offshore
SONG Xiao-li, HUANG Rui, YUAN Ke-lei, ZHAO Yu-hui, WEN Ruo-bing, ZHANG Hong-liang
2015, 34(3): 391-395.   doi: 10.13634/j.cnki.mes20150312
[Abstract](1684) [PDF 1216KB](34)
Research progress on toxicoproteomics in fish: Using marine medaka and zebrafish as models
ZHANG Ling
2015, 34(4): 616-621.   doi: 10.13634/j.cnki.mes20150426
[Abstract](1942) [PDF 1100KB](42)
Ecological characteristics of phytoplankton community structure in Northwest Hainan coastal areas
XU Shan-nan, LIN Hua-jian, GONG Yu-yan, LI Chun-hou, CHEN Zuo-zhi
2015, 34(5): 661-668,685.   doi: 10.13634/j.cnki.mes20150504
[Abstract](1733) [PDF 1261KB](10)
Working principle and improvement of weir technology in recovering oil spill
ZHANG Yin-dong, YANG Jie, ZHANG Xing-ming
2015, 34(2): 290-293.   doi: 10.13634/j.cnki.mes20150223
[Abstract](1896) [PDF 1168KB](27)
Responses of marine organisms and ecosystems to ocean acidification
ZHANG Jin-feng, GAO Xue-lu, ZHOU Feng-xia, LI Pei-miao, ZHUANG Wen
2015, 34(4): 630-640.   doi: 10.13634/j.cnki.mes20150428
[Abstract](1809) [PDF 1165KB](21)
Research on evaluation criteria construction and empirical study of the impacts of the reclamation on marine ecosystems——taking jiaozhou bay as an example
Zong-en HU, Miao WANG
2016, 35(3): 357-365.   doi: 10.13634/j.cnki.mes20160306
[Abstract](1977) [FullText HTML](660) [PDF 1202KB](660)
Effect of oil spill dispersant on the oil fingerprints investigated by variance analysis
WANG Qiao-min, SUN Bing, YAN Zhi-yu, LIU Hui, ZHU Xiao-mei, LIU Qin, YU Ying
2015, 34(4): 587-592.   doi: 10.13634/j.cnki.mes20150420
[Abstract](1640) [PDF 1097KB](4)
Research on island protection planning based on ecosystem
ZHANG Zhi-wei, ZHAO Jin-xia, FENG Ai-ping, WANG Jing
2015, 34(2): 300-306.   doi: 10.13634/j.cnki.mes20150225
[Abstract](2383) [PDF 1163KB](28)
Diurnal change of soil carbon flux of island forests:A case study in Beichangshan Island
QIAO Ming-yang, SHEN Cheng-cheng, SHI Hong-hua, DING De-wen, GUO Zhen
2015, 34(3): 377-383.   doi: 10.13634/j.cnki.mes20150310
[Abstract](1680) [PDF 1258KB](10)
Practice and consideration of cooperative action for marine environmental monitoring informatization system
LI Yi-hong, XU Ren, SONG Chen-yao
2015, 34(4): 578-581.   doi: 10.13634/j.cnki.mes20150418
[Abstract](1619) [PDF 1136KB](29)
Acute toxic effects of crude oil pollution on Nauplius Ⅱ of Chthamalus challengeri
QI Lei-lei, SHA Jing-jing, TANG Xue-xi
2015, 34(3): 367-372.   doi: 10.13634/j.cnki.mes20150308
[Abstract](1720) [PDF 1260KB](11)
A public questionnaire survey of oil spill in 7.16 Dalian New Port
GUAN Chun-jiang, ZHANG Fan, LIN Yong, FAN Jing-feng
2015, 34(2): 317-320.   doi: 10.13634/j.cnki.mes20150228
[Abstract](2613) [PDF 1218KB](21)
Comprehensive method for determining the weights of vulnerability assessment indexes on islands and the coastal zone based on the AHP weight method and entropy weight method
LIU Da-hai, GONG Wei, XING Wen-xiu, LI Xiao-xuan, MA Xue-jian, Yu Ying
2015, 34(3): 462-467.   doi: 10.13634/j.cnki.mes20150324
[Abstract](1685) [PDF 1165KB](17)
Spatial and temporal variations of turbidity in the East China Seas derived from MODIS satellite data
HU Jing-wen, CHEN Shu-guo, ZHANG Ting-lu, ZHANG Guo-peng
2015, 34(4): 564-569.   doi: 10.13634/j.cnki.mes20150416
[Abstract](2254) [PDF 1332KB](22)
Nitrogen and phosphorus absorption capability of Sargassummcclurei
ZHENG Xiao-ting, HUANG Xiang-hu, LI Chang-ling, YU Dong-xia
2015, 34(3): 396-401.   doi: 10.13634/j.cnki.mes20150313
[Abstract](1469) [PDF 1224KB](11)
The evolution and driving mechanism of landscape pattern in islands during rapid urbanization: A case study of Dachangshan Island
MA De-ming, SHI Hong-hua, LIU Shi-hao, TIAN Zi-wen
2015, 34(2): 261-267.   doi: 10.13634/j.cnki.mes20150218
[Abstract](1754) [PDF 1189KB](20)
Effects of benzo[a]pyrene exposure on biomarkers in Exopalaemon carinicauda liver
LI Lei, JIANG Mei, SHEN Xin-qiang, WANG Yun-long, WU Qing-yuan, NIU Jun-xiang, XU Gao-peng
2015, 34(4): 513-518.   doi: 10.13634/j.cnki.mes20150407
[Abstract](1564) [PDF 1258KB](6)
Toxicity effectofheavy metals on Photobacteriumphosphoreum and the species sensitivity comparison with other marine organisms
LI Zhen, MIAO Jing-jing, PAN Lu-qing
2015, 34(2): 176-183.   doi: 10.13634/j.cnki.mes20150204
[Abstract](2001) [PDF 1255KB](24)
Distribution patterns and ecological assessment on heavy metals in the surface sediments of Laizhou Bay
ZHENG Yi-min, GAO Mao-sheng, LIU Sen, ZHAO Jin-ming, GUO Fei, WANG Chang-ming
2015, 34(3): 354-360.   doi: 10.13634/j.cnki.mes20150306
[Abstract](1783) [PDF 1377KB](17)
Differences between the Northwest Pacific tropical cyclone genesis location of two kinds of El Nio Modoki in autumn
ZHU Sai-zhi, MENG Xiang-feng
2015, 34(2): 255-260.   doi: 10.13634/j.cnki.mes20150217
[Abstract](2628) [PDF 1384KB](26)
Variation trends of nutrient in Qinhuangdao coastal area based on statistical method
WU Tong, CHEN Yan-long, HUANG Feng-rong, MA Yu-juan, BAO Chun-xia
2015, 34(4): 499-502,523.   doi: 10.13634/j.cnki.mes20150404
[Abstract](1738) [PDF 2033KB](21)
Phytoplankton diversity distribution and its influence factors in southern waters of Miaodao Archipelago in summer
HUANG Feng-hong, SHI Hong-hua, ZHENG Wei, WANG Yuan-yuan, HUO Yuan-zi, LI Jie
2015, 34(4): 530-535.   doi: 10.13634/j.cnki.mes20150410
[Abstract](1753) [PDF 1212KB](10)
Evaluation and risk prediction of eutrophication in Bohai Sea
YU Chun-yan, LI Mian, BAO Chen-guang, LAN Dong-dong, XU Yan, MA Ming-hui
2015, 34(3): 373-376.   doi: 10.13634/j.cnki.mes20150309
[Abstract](1852) [PDF 1243KB](17)
Spatial and temporal distribution of PCBs in the reclamation soils at Changjiang Estuary
ZHU Yun-juan, DING Yong-sheng, TONG Sheng, HU Chao-hua, ZHU Shi-mao, SU Peng-hao, SUN Dan, LI Yi-fan
2015, 34(2): 274-278.   doi: 10.13634/j.cnki.mes20150220
[Abstract](1779) [PDF 1227KB](17)
Source apportionment of PAHs in surface sediments from Bohai Sea and adjacent area
LI Jia-fu, LIU Shao-peng, LIU Xiang-min, MA Qian-yao, HAN Bin, LI Xian-guo
2015, 34(3): 337-342,353.   doi: 10.13634/j.cnki.mes20150303
[Abstract](1220) [PDF 2027KB](17)
Distribution characteristics and environmental significance of carbon, nitrogen and phosphorus in core sediments of Daya Bay
HE Tong, YANG Wen-feng, XIE Jian, YU Han-sheng
2015, 34(4): 524-529.   doi: 10.13634/j.cnki.mes20150409
[Abstract](2675) [PDF 1189KB](8)
Strategy of moral hazard controlling in marine disaster insurance market
ZHENG Hui, WANG Chun-yang
2015, 34(4): 536-539,557.   doi: 10.13634/j.cnki.mes20150411
[Abstract](2227) [PDF 1884KB](29)
Spectral discrimination and separable feature lookup table of typical vegetation species in Yellow River Delta wetland
REN Guang-bo, ZHANG Jie, MA Yi
2015, 34(3): 420-426.   doi: 10.13634/j.cnki.mes20150317
[Abstract](1901) [PDF 1382KB](16)
Continuous underway measurements of sea surface O2/Ar and pCO2 by membrane inlet mass spectrometry
Wen-jing ZHENG, Yu HAN, Chuan QIN, Gui-ling ZHANG
2016, 35(4): 611-617.   doi: 10.13634/j.cnki.mes20160421
[Abstract](1420) [FullText HTML](596) [PDF 1392KB](596)
Occurrence and source of polycyclic aromatic hydrocarbon (PAHs) in the surficial sediment of the Bohai Sea
GUO Wen, XUE Wen-ping, YAO Wen-jun, XU Heng-zhen, LIN Zhong-sheng, YAO Zi-wei, MA Xin-dong
2015, 34(3): 330-336.   doi: 10.13634/j.cnki.mes20150302
[Abstract](1385) [PDF 1338KB](15)
Precise determination of 224Ra and 223Ra in seawaters by RaDeCC
GU He-quan, DU Jin-zhou, WU Mei-gui, JI Tao, ZHANG Jing
2015, 34(4): 570-577.   doi: 10.13634/j.cnki.mes20150417
[Abstract](1798) [PDF 1244KB](45)
Distribution of urea section and its affecting factors in red-tide-frequent-occurrence area in spring
SU Ying, JIANG Cong-cong, SHI Xiao-yong, ZHAO Yu-ting, LIANG Sheng-kang, WANG Xiu-lin
2015, 34(2): 171-175.   doi: 10.13634/j.cnki.mes20150203
[Abstract](1952) [PDF 1282KB](29)
Pollution characteristics and source analysis of polycyclic aromatic hydrocarbons(PAHs) in surface sediment of Dalian
LIU Xian-jie, HONG Wen-jun, WANG Luo, JIA Hong-liang, LI Yi-fan
2016, 35(2): 252-255.   doi: 10.13634/j.cnki.mes20160217
[Abstract](2753) [PDF 1998KB](22)
Bioremediation of the pathogenic bacteria pollution in the sea cucumber Stichopus japonicus-cultured water system with sponge Hymeniacidon perlevis
LENG Xiao-fei, ZHANG Xi-chang, ZHANG Wei, XU Shu-fen
2015, 34(2): 166-170,189.   doi: 10.13634/j.cnki.mes20150202
[Abstract](1734) [PDF 1243KB](33)
Assessment of the reclamation resource potential based on ecosystem function in Dalian City
LIU Shu-xi, ZHANG Hao, ZHANG Peng-ji, SUN Shu-yan, SUN Qin-bang, YAN Ji-shun
2015, 34(2): 194-198.   doi: 10.13634/j.cnki.mes20150207
[Abstract](1906) [PDF 1090KB](24)
Acute toxicity and accumulation of Mn ions with different valences on larval Apostichopus japonicas
XING Hong-yan, MA Yuan-qing, LI Bin, LI Jia-hui, LIU Xiao-bo, LIU Ai-ying, JIN Yang, BAI Yan-yan, ZHANG Juan, HE Xin
2015, 34(2): 251-254,306.   doi: 10.13634/j.cnki.mes20150216
[Abstract](1707) [PDF 1233KB](20)
Toxic effect of nonylphenol (NP) on the mantle of Paphia undulate
GONG Xiu-yu, HUANG Zhi-fei, WANG He-wei, ZHANG Zhe, MA Sheng-wei, CHEN Hai-gang, CAI Wen-gui
2015, 34(2): 234-239.   doi: 10.13634/j.cnki.mes20150213
[Abstract](1984) [PDF 1274KB](20)
Study on the corrosion effect of ballast tank caused by ballast water treatment of hydroxyl radical
CHEN Cao, CHENG Chao, BAI Min-dong, ZHANG Zhi-tao, MENG Xiang-ying
2015, 34(4): 582-586.   doi: 10.13634/j.cnki.mes20150419
[Abstract](2215) [PDF 1133KB](14)
Purification of Eucheuma gelatinae on nitrogen and phosphorus and effect on the level of chlorophyll a in eutrophic seawater
LI Chun-qiang, YU Xiao-ling, WANG Shu-chang, PENG Ming
2015, 34(2): 190-193,239.   doi: 10.13634/j.cnki.mes20150206
[Abstract](2614) [PDF 1221KB](29)
Distribution and composition of dissolved amino acids in the East China Sea and the Yellow Sea during spring
WANG Peng, CHEN Yan, YANG Gui-peng, WANG Qi
2015, 34(2): 217-224.   doi: 10.13634/j.cnki.mes20150211
[Abstract](1895) [PDF 1452KB](24)
Historical changes of the length and fractal dimension of Chinese coastline since 1990
ZHANG Yun, ZHANG Jian-li, JING Xin-di, SONG De-rui, ZHAO Jian-hua
2015, 34(3): 406-410.   doi: 10.13634/j.cnki.mes20150315
[Abstract](1473) [PDF 1145KB](30)
Effects of temperature,light intensity and nutrient condition on the growth and hemolytic activity of six species of typical ichthyotoxic algae
CAO Jie-ru, HUAN Qing-liu, WU Ni, JIANG Tian-jiu
2015, 34(3): 321-329.   doi: 10.13634/j.cnki.mes20150301
[Abstract](1553) [PDF 1593KB](13)
Optimal coupled inversion for multi-parameter of jet in flowing ambient fluid
LI Ming-chang, ZHANG Guang-yu, SI Qi, LIANG Shu-xiu, SUN Zhao-chen
2015, 34(3): 447-450.   doi: 10.13634/j.cnki.mes20150321
[Abstract](1945) [PDF 1161KB](17)
Application of eutrophication index in the coastal waters of China
HUANG Ya-nan, WU Meng-meng
2016, 35(2): 316-320.   doi: 10.13634/j.cnki.mes20160228
[Abstract](1917) [PDF 1172KB](37)
Partition assessment of water environment quality of Ma'an Archipelago
HU Yi-feng, JIANG Hong, LIU Tao, JIN Jing-lin, LI Wei-ding, XU Ling-yan
2015, 34(2): 240-244.   doi: 10.13634/j.cnki.mes20150214
[Abstract](1767) [PDF 1110KB](23)
Dynamic analyses of early development and gather of green macroalgae in 2012
LI Yue-song, XIAO Wen-jun, YANG Hong, HU Song, PAN Ling-zhi
2015, 34(2): 268-273.   doi: 10.13634/j.cnki.mes20150219
[Abstract](1730) [PDF 1394KB](22)
The application of high density resistivity method to analysis the impact of tide on water table fluctuation in coastal aquifer
SU Qiao, PENG Chang-sheng, XU Xing-yong, FU Teng-fei, YAO Jing
2015, 34(2): 286-289.   doi: 10.13634/j.cnki.mes20150222
[Abstract](2336) [PDF 1136KB](24)
Distributions and sea-to-Air fluxes of volatile halocarbons in the Bohai Sea and northern Yellow Sea
LIU Qiu-lin, HE Zhen, YANG Gui-peng
2015, 34(4): 481-487.   doi: 10.13634/j.cnki.mes20150401
[Abstract](1667) [PDF 1356KB](10)
The preliminary study of single-cell PCR analysis of marine Dinoflagellates
ZHANG Qi, LIU Yong-jian, LIU Gui-ze
2015, 34(4): 611-615.   doi: 10.13634/j.cnki.mes20150425
[Abstract](1762) [PDF 1312KB](22)
Composition, distribution and source of N-alkanes in surface sediments from the coast of East China Sea
Feng LI, Gang XU, Xing-liang HE, Li-lei CHEN, jiang-tao WANG
2016, 35(3): 398-403.   doi: 10.13634/j.cnki.mes20160312
[Abstract](1840) [FullText HTML](629) [PDF 3058KB](629)
Eco-chemical factor evaluation among different types of wetlands on Qi'ao Island, Zhuhai
Shen-yu MIAO, Lian-di LONG, Wen-qin TAO, Qing-chang ZENG, Wei-lin CHEN, Jian-hui CHEN, Hou-lin WANG
2016, 35(5): 670-677.   doi: 10.13634/j.cnki.mes20160506
[Abstract](1350) [FullText HTML](627) [PDF 1638KB](627)
Typical island landscape ecological network establishmenta case study of Chongming Island
CHI Yuan, SHI Hong-hua, FENG Ai-ping
2015, 34(3): 433-440.   doi: 10.13634/j.cnki.mes20150319
[Abstract](2138) [PDF 1255KB](14)
Effect of crude oil dispersion on carbon and nitrogen stable isotopic composition of Nitzschia closterium
LIU Yu, LI Ying, WANG Xiao-qi, WANG Hai-xia, HAN Jun-song
2015, 34(4): 503-507.   doi: 10.13634/j.cnki.mes20150405
[Abstract](1719) [PDF 1231KB](19)
Determination of trichlorobenzenes in sea water by dispersive liquid-liquid microextraction-gas chromatography/mass method
FENG Xue-fang, YE Ran, XI Xiao-qing, SHEN Hao-yu, XIA Qing-hua
2015, 34(2): 307-312.   doi: 10.13634/j.cnki.mes20150226
[Abstract](1743) [PDF 1212KB](16)
Capacity of Heterosigma akashiwo to utilize organic nitrogen
WANG Zhao-hui, YANG Xue, LIANG Yu
2015, 34(3): 343-346.   doi: 10.13634/j.cnki.mes20150304
[Abstract](1135) [PDF 1179KB](18)
Application of electric conductivity method in seawater intrusion and soil salinization
ZHANG Yi-hui, WEI Qing-fei, WANG Yu-guang, WANG Chuan-jun
2015, 34(4): 593-595.   doi: 10.13634/j.cnki.mes20150421
[Abstract](1587) [PDF 1130KB](26)
Some countermeasures on marine nuclear accident emergency monitoring and environment assessment
XIE Jun-jian, ZHOU Peng, CAI Jian-dong, FANG Hong-da, LI Dong-mei, HUANG Chu-guang, CAI Wei-xu, CHEN Jia-hui, TANG Quan
2015, 34(4): 622-629.   doi: 10.13634/j.cnki.mes20150427
[Abstract](1807) [PDF 1112KB](17)
Cumulative effects of topography change on waterway's hydrodynamic along the southern coast of Hangzhou Bay
LU You-peng, LIANG Shu-xiu, SUN Zhao-chen, CONG Pi-fu
2015, 34(3): 384-390.   doi: 10.13634/j.cnki.mes20150311
[Abstract](1499) [PDF 1730KB](23)
Experimental investigation of nano-polypropylene fiber grafted by UV radiation as sorbent materials for oil spills
KOU Xi-yuan, WANG Jing, WANG Wen-hua, QIU Jin-quan, ZHANG Yu-shan
2015, 34(4): 519-523.   doi: 10.13634/j.cnki.mes20150408
[Abstract](1640) [PDF 1142KB](23)
Effects of DEHP on embryonic development and DNA damage of Pinctada maetensii
ZHAO Chun-feng, DIAO Xiao-ping, CAO Jia, LI Ping, ZHENG Peng-fei, SONG Qin-qin, ZHOU Hai-long, WANG Hai-hua
2015, 34(4): 546-552.   doi: 10.13634/j.cnki.mes20150413
[Abstract](1715) [PDF 1259KB](14)
Effects of pH limitation on population growth,nutrient uptake and photosynthesis physiological processes of Karenia mikimotoi
WANG Yue, SHEN Ang-lu, ZHAO Shi-ye, ZHU Li-xin, SONG Shu-zhen, LI Dao-ji
2015, 34(4): 488-493.   doi: 10.13634/j.cnki.mes20150402
[Abstract](2216) [PDF 1259KB](18)
Research on remote sensing retrieval of suspended sediment concentration in Hangzhou Bay by GF-1 satellite
CHENG Qian, LIU Bo, LI Ting, ZHU Li
2015, 34(4): 558-563,577.   doi: 10.13634/j.cnki.mes20150415
[Abstract](1696) [PDF 1915KB](15)
Research and application of evaluation method for marine ecological island construction-a case study of Chongming Island
ZHONG Chong-jun, LIU Da-hai, XING Wen-xiu, MA Yun-rui, MA Xue-jian
2015, 34(2): 294-299.   doi: 10.13634/j.cnki.mes20150224
[Abstract](1790) [PDF 1106KB](17)
An approach for correcting grain size effect base on the size-frequency distribution
SHI Yong, LIU Zhi-shuai, GAO Jian-hua, WANG Xiao-yong
2015, 34(4): 606-610.   doi: 10.13634/j.cnki.mes20150424
[Abstract](1473) [PDF 1239KB](21)
Variation of diamondoid compounds in the fuel oil during long-term natural weathering
Bai-juan YANG, Peng YAO, Zhi-gang YU
2016, 35(5): 697-702.   doi: 10.13634/j.cnki.mes20160510
[Abstract](1821) [FullText HTML](622) [PDF 1568KB](622)
Effect of salinity and illumination on the growth of Alexandrium tamarense
LIU Qing, LIU Bing-li, WANG Ren-feng, ZHANG Mo, CUI Yan-chao, XU Dong-hai
2015, 34(2): 199-205.   doi: 10.13634/j.cnki.mes20150208
[Abstract](1984) [PDF 1210KB](14)

ChiefEditor:关道明

FirstTime:1982年 双月刊

Director:生态环境部

Sponsor:国家海洋环境监测中心、中国海洋学会

Tel:0411-84783126

E-mail:hyhjkx@vip.126.com

NewsMore>

Author Center

WeChat public number