Different hydrodynamic processes regulated on water quality (nutrients, dissolved oxygen, and phytoplankton biomass) in three contrasting waters of Hong Kong
Different hydrodynamic processes regulated on water quality (nutrients, dissolved oxygen, and phytoplankton biomass) in three contrasting waters of Hong Kong
复制标题
香港三个对比水域的不同水动力过程对水质（营养物、溶解氧和浮游植物生物量）的调节
DOI：
10.1007/s10661-013-3487-6
复制
发表时间：
2014-03
影响因子：
3
通讯作者：
Yue, Weizhong
中科院分区：
文献类型：
--
作者：
Zhou, Weihua;Yuan, Xiangcheng;Long, Aimin;Huang, Hui;Yue, Weizhong
香港沃茨位于珠江口东面，属亚热带。2003年，香港环境保护署对香港3个不同水动力条件下的沃茨的营养盐、溶解氧（DO）和浮游植物生物量（Chl-a）进行了逐月监测。西部、东部和南部沃茨分别主要由富含营养物的珠江排放、营养物贫乏的沿岸/陆架海洋沃茨以及河口和沿岸海水与香港污水的混合物所主导。与此相应，三个对比区的水质呈现出明显的时空变化规律。营养盐一般沿沿着西沃茨向东沃茨递减。在旱季，由于季风和潮流的作用，水体被强烈混合，导致叶绿素a浓度较低（<5 μg l−1），而底层溶解氧浓度较高（>4 mg l−1），这表明混合增强了香港沃茨对富营养化的缓冲能力。而在丰水期，由于盐跃层和温盐层结、充足的营养盐和光照，夏季南部沃茨的表层叶绿素a一般>10 μg l− 1。虽然夏季缺氧（DO <2 mg l−1）在污水排放点附近和南部沃茨的垂直分层引起的间歇性观察，富营养化的影响在香港沃茨并不像预期的那样严重，由于P限制和短的水停留时间在雨季。
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 μg 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-awas generally >10 μg l−1in 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.
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影响因子：
4.5
作者：
P. Raymond;J. Bauer;J. Cole
通讯作者：
P. Raymond;J. Bauer;J. Cole
影响因子：
2.1
作者：
A. C. Redfield
通讯作者：
A. C. Redfield
影响因子：
2.3
作者：
K. Yin;Zhifeng Lin;Z. Ke
通讯作者：
K. Yin;Zhifeng Lin;Z. Ke
DOI：
10.1360/02yd9110
发表时间：
2002-12
期刊：
Science in China Series D: Earth Sciences
影响因子：
--
作者：
Daoji Li;Jing Zhang;Daji Huang;Ying Wu;Jun-Ze Liang
通讯作者：
Daoji Li;Jing Zhang;Daji Huang;Ying Wu;Jun-Ze Liang
DOI：
10.1080/00785236.1995.10422044
发表时间：
1995-03-01
期刊：
OPHELIA
影响因子：
--
作者：
NIXON, SW
通讯作者：
NIXON, SW