张欣泉, 姜会超, 马元庆, 程玲, 李佳蕙. 2017年丰水期莱州湾环境因子分布特征及网采浮游植物的响应[J]. 海洋环境科学, 2020, 39(4): 614-621, 629. DOI: 10.12111/j.mes.20190026
引用本文: 张欣泉, 姜会超, 马元庆, 程玲, 李佳蕙. 2017年丰水期莱州湾环境因子分布特征及网采浮游植物的响应[J]. 海洋环境科学, 2020, 39(4): 614-621, 629. DOI: 10.12111/j.mes.20190026
ZHANG Xin-quan, JIANG Hui-chao, MA Yuan-qing, CHENG Ling, LI Jia-hui. The spatial distribution of environmental factors and the response of net-phytoplankton in the Laizhou bay during wet-season in 2017[J]. Chinese Journal of MARINE ENVIRONMENTAL SCIENCE, 2020, 39(4): 614-621, 629. DOI: 10.12111/j.mes.20190026
Citation: ZHANG Xin-quan, JIANG Hui-chao, MA Yuan-qing, CHENG Ling, LI Jia-hui. The spatial distribution of environmental factors and the response of net-phytoplankton in the Laizhou bay during wet-season in 2017[J]. Chinese Journal of MARINE ENVIRONMENTAL SCIENCE, 2020, 39(4): 614-621, 629. DOI: 10.12111/j.mes.20190026

2017年丰水期莱州湾环境因子分布特征及网采浮游植物的响应

The spatial distribution of environmental factors and the response of net-phytoplankton in the Laizhou bay during wet-season in 2017

  • 摘要: 2017年丰水期(8月份),在莱州湾开展了31个站位的综合调查,研究了莱州湾丰水期环境因子空间分布以及网采浮游植物的响应特征。结果发现:2017年丰水期莱州湾水环境呈现出明显的空间分布差异,西南近岸区域总体呈现出高表层水温(SST)、低表层盐度(SSS)、高营养盐的分布特征,小清河及邻近区域陆源输入是影响莱州湾SSS和营养盐空间分布的主要因素,小清河氨氮(NH4-N)的减排对河口区NH4-N浓度下降有重要影响;莱州湾浮游植物呈现出明显的空间分布差异,小清河口区呈现出高浮游植物丰度、低多样性指数H′的空间分布特征,H′高值区主要位于东部湾口区,浮游植物群落划分为4大不同类群,各类群之间群落结构差异明显;浮游植物丰度与SSS和Si/N呈显著负相关(p<0.05),与硝酸盐(NO3-N)、NH4-N、无机氮(DIN)呈显著正相关(p<0.05),浮游植物多样性指数H′与SST和DIN呈显著负相关(p<0.05)。活性硅酸盐(DISi)是影响浮游植物群落结构最主要的因素,而NO3-N、NH4-N、DISi、Si/N是影响浮游植物群落结构最主要的环境组合。浮游植物群落对环境变化有明显的响应。

     

    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.

     

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