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学科主题: Ecology; Environmental Sciences; Marine & Freshwater Biology; Water Resources
题名: Hypoxia in the Pearl River Estuary, the South China Sea, in July 1999
作者: Luo, L ; Li, S ; Wang, D
通讯作者: dxwang@scsio.ac.cn
关键词: salinity front ; stratification
刊名: AQUATIC ECOSYSTEM HEALTH & MANAGEMENT
发表日期: 2009
卷: 12, 期:4, 页:418-428
收录类别: sci
部门归属: [Luo, L.; Wang, D.] Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Trop Marine Environm Dynam, Guangzhou 510301, Guangdong, Peoples R China; [Li, S.] Sun Yat Sen Univ, Sch Environm Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China
项目归属: LED
摘要: The Pearl River Estuary empties into the South China Sea in southeastern China, and hypoxia is one of the major environmental problems here during summer. It can be caused by coastline, topography, hydrodynamics, tidal dynamics and biological processes (mainly by stratification and oxidation reaction). Since ecological processes are closely related to dynamic processes, we revise and link together both a physical and a biological model to establish a coupled hydrodynamic-ecological numerical model to study the summertime hypoxia. The model simulates physical and biological processes and reproduces the observed hypoxia in the bottom layer in two regions located in west shallow water and around Nei Lingding Island. A low-salinity plume forms after the freshwater drifts offshore. Strong stratification exists in the water body shoreward where the vertical mixing is weak. The salinity front and stratification cause a poor exchange in the vertical direction and greatly influence biological processes for nutrients, phytoplankton, and detritus, which induce the hypoxia occurrence in the bottom layer of the Pearl River Estuary. On the other hand, in two troughs the tide diminishes the strength of stratification and prohibits the large-scale growth of the hypoxia. The physical processes related to topography, run off and tidal mixing regulate the distribution of biological factors and the occurrence of hypoxia.
原文出处: 查看原文
WOS记录号: WOS:000273755800010
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/6047
Appears in Collections:热带海洋环境动力实验室(LTO)_期刊论文

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Recommended Citation:
Luo, L; Li, S; Wang, D.Hypoxia in the Pearl River Estuary, the South China Sea, in July 1999,AQUATIC ECOSYSTEM HEALTH & MANAGEMENT,2009,12(4):418-428
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文件名: Hypoxia in the Pearl River Estuary, the South China Sea, in July 1999.pdf
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