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学科主题: Environmental Sciences & Ecology
题名: Different hydrodynamic processes regulated on water quality (nutrients, dissolved oxygen, and phytoplankton biomass) in three contrasting waters of Hong Kong
作者: Zhou, WH ; Yuan, XC ; Long, AM ; Huang, H ; Yue, WZ
通讯作者: whzhou@scsio.ac.cn ; longam@scsio.ac.cn
关键词: Eutrophication ; Water quality ; Hydrodynamic processes ; Hong Kong waters
刊名: ENVIRONMENTAL MONITORING AND ASSESSMENT
发表日期: 2014
卷: 186, 期:3, 页:1705-1718
收录类别: sci
部门归属: [Zhou, Weihua ; Yuan, Xiangcheng ; Huang, Hui ; Yue, Weizhong] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol LMB, Guangzhou 510301, Guangdong, Peoples R China ; [Zhou, Weihua ; Yuan, Xiangcheng ; Huang, Hui ; Yue, Weizhong] Chinese Acad Sci, South China Sea Inst Oceanol, Trop Marine Biol Res Stn TMBRS Hainan, Guangzhou 510301, Guangdong, Peoples R China ; [Long, Aimin] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog LTO, Guangzhou 510301, Guangdong, Peoples R China
项目归属: LMB
资助者: Natural Science Fund of China [31370500, 31370499, 41106107]; Global Change Scientific Research Program of China [2010CB951201]; Research Grants Council [HKUST 6296/03 M, 6505/06 M]; University Grants Committee Area of Excellence project of Hong Kong [AoE/P-04/04-01]
摘要: The subtropical Hong Kong (HK) waters are located at the eastern side of the Pearl River Estuary. Monthly changes of water quality, including nutrients, dissolved oxygen (DO), and phytoplankton biomass (Chl-a) were routinely investigated in 2003 by the Hong Kong Environmental Protection Department in three contrasting waters of HK with different prevailing hydrodynamic processes. The western, eastern, and southern waters were mainly dominated by nutrient-replete Pearl River discharge, the nutrient-poor coastal/shelf oceanic waters, and mixtures of estuarine and coastal seawater and sewage effluent of Hong Kong, respectively. Acting in response, the water quality in these three contrasting areas showed apparently spatial-temporal variation pattern. Nutrients usually decreased along western waters to eastern waters. In the dry season, the water column was strongly mixed by monsoon winds and tidal currents, which resulted in relatively low Chl-a (< 5 mu g l(-1)) and high bottom DO (> 4 mg l(-1)), suggesting that mixing enhanced the buffering capacity of eutrophication in HK waters. However, in the wet season, surface Chl-a was generally > 10 mu g l(-1) in southern waters in summer due to halocline and thermohaline stratification, adequate nutrients, and light availability. Although summer hypoxia (DO < 2 mg l(-1)) was episodically observed near sewage effluent site and in southern waters induced by vertical stratification, the eutrophication impacts in HK waters were not as severe as expected owing to P limitation and short water residence time in the wet season.
原文出处: 查看原文
WOS记录号: WOS:000330715300030
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10469
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Zhou, WH; Yuan, XC; Long, AM; Huang, H; Yue, WZ.Different hydrodynamic processes regulated on water quality (nutrients, dissolved oxygen, and phytoplankton biomass) in three contrasting waters of Hong Kong,ENVIRONMENTAL MONITORING AND ASSESSMENT,2014,186(3):1705-1718
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