陆昕雨, 彭模, 周超凡, 赵永刚, 姜龙. 江苏近岸海域富营养化特征研究[J]. 海洋环境科学, 2022, 41(5): 745-752. DOI: 10.12111/j.mes.2021-x-0207
引用本文: 陆昕雨, 彭模, 周超凡, 赵永刚, 姜龙. 江苏近岸海域富营养化特征研究[J]. 海洋环境科学, 2022, 41(5): 745-752. DOI: 10.12111/j.mes.2021-x-0207
LU Xin-yu, PENG Mo, ZHOU Chao-fan, ZHAO Yong-gang, JIANG Long. Eutrophication characteristics in the Jiangsu coastal waters[J]. Chinese Journal of MARINE ENVIRONMENTAL SCIENCE, 2022, 41(5): 745-752. DOI: 10.12111/j.mes.2021-x-0207
Citation: LU Xin-yu, PENG Mo, ZHOU Chao-fan, ZHAO Yong-gang, JIANG Long. Eutrophication characteristics in the Jiangsu coastal waters[J]. Chinese Journal of MARINE ENVIRONMENTAL SCIENCE, 2022, 41(5): 745-752. DOI: 10.12111/j.mes.2021-x-0207

江苏近岸海域富营养化特征研究

Eutrophication characteristics in the Jiangsu coastal waters

  • 摘要: 近年来,江苏近岸海域水质不佳,赤潮、绿潮等生态灾害屡屡发生,富营养化是其潜在原因之一。本文对该海域2019年和2020年春、夏、秋季航次监测的无机氮(DIN)、活性磷酸盐(SRP)、叶绿素a(Chl a)等水质参数进行了空间分析,采用指数评价法量化了该海域的富营养化程度,并基于统计分析研究了该海域的富营养化特征。结果表明:江苏近岸海域DIN浓度和SRP浓度总体呈现近岸高、远岸低的分布特征,营养盐浓度与盐度呈显著负相关关系;在降水量和径流量更大的夏季,营养盐浓度和Chl a浓度比春季和秋季更高;丰水年(2020年)相较平水年(2019年),该海域的氮磷比和富营养化程度均更高。因此,陆源输入对江苏近岸海域的富营养化程度有至关重要的影响,加强对入海河流的监测和排污治理是缓解该海域富营养化的关键。

     

    Abstract: In recent years, water quality degradation in the Jiangsu coastal waters has led to frequent harmful algal blooms known as the red and green tides. Eutrophication is considered as one of the potential causes. In order to study eutrophication characteristics in this region, the monitored water quality parameters such as dissolved inorganic nitrogen (DIN), soluble reactive phosphorus (SRP), and chlorophyll a in 2019 and 2020 were analyzed spatially and integrated as various eutrophication indices. Results indicate that DIN and SRP concentrations in the Jiangsu coastal waters were relatively high nearshore and significantly negatively correlated with salinity. Due to higher precipitation and river runoff, nutrient and chlorophyll a concentrations were higher in summer than in spring and fall, and in the wet (2020) than normal (2019) year. Based on these findings, we conclude that the terrestrial input likely exerts a major control on eutrophication of the Jiangsu coastal sea. Monitoring and load management of the riverine pollution are key to water quality improvement in this region.

     

/

返回文章
返回