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Water quality trends in the Three Gorges Reservoir region before and after impoundment (1992-2016)

文献类型：期刊论文

作者Li, Zhe4; Ma, Jianrong3; Guo, Jinsong4; Paer, Hans W.2; Brookes, Justin D.1; Xiao, Yan3; Fang, Fang4; Ouyang, Wenjuan3; Lu, Lunhui3
刊名ECOHYDROLOGY & HYDROBIOLOGY
出版日期2019-07-01
卷号19期号:3页码:317-327
ISSN号1642-3593
关键词Yangtze River Eutrophication Three Gorges Reservoir Water quality Phosphorus Nitrogen
DOI10.1016/j.ecohyd.2018.08.005
通讯作者Guo, Jinsong(guo0768@cqu.edu.cn)
英文摘要Reservoirs are essential for the wellbeing of human societies, but can also be subject to negative ecological impacts. The Three Gorges Reservoir (TGR) in the upper Yangtze River is remarkable for its size and engineering; however, its effects on water quality are poorly understood. To the best of our knowledge, this study is the first to describe long-term (1992-2016) monitoring. It showed that the chemical oxygen demand (COD, via the potassium permanganate index) and total phosphorus (TP) have decreased 40.9% +/- 9.9% and 22.2% +/- 9.7% respectively in the TGR mainstream between impoundment in June 2003 and 2016, while total nitrogen (TN) and ammonium (NH4-N) have increased 1.3% +/- 2.4% and 8.2% +/- 2.6%. In addition, phytoplankton biomass has increased by a factor of 2.7 (1.1-4.8) over pre-impoundment levels in the mainstream, and tributary algal blooms have increased in frequency since 2004. The reductions in COD and TP were caused primarily by decreases in water flow speed, which lead to sediment settlement. The anti-seasonal operation pattern and water volume increased TGR may also increases the dilution capacity. TN and ammonium are less affected by sediment deposition and have increased slightly under intensified human activities. Decreased water flow speeds and nutrient enrichment have promoted increases in algal biomass, leading to blooms in tributary backwater zones. In situ experiments indicate that phytoplankton growth in the TGR is phosphorus limited during all seasons. Therefore, controlling phosphorus will reduce the short-term eutrophication potential in the reservoir. However, concurrent control of nitrogen and phosphorus inputs are necessary in the long term. (C) 2018 Published by Elsevier B.V. on behalf of European Regional Centre for Ecohydrology of the Polish Academy of Sciences.
资助项目National Key Research and Development program in China[2017YFC0404700] ; National Natural Science Foundation of China[41601537] ; National Natural Science Foundation of China[41771520] ; National Natural Science Foundation of China[51679226] ; Key Research Program of Frontier Sciences, CAS[QYZDJSSWDQC008] ; Chongqing Special Project on Science and Technology, Innovation of Social Livelihood[cstc2015shmszx20011]
WOS研究方向Environmental Sciences & Ecology ; Water Resources
语种英语
出版者INT CENTRE ECOLOGY, POLISH ACAD SCIENCES
WOS记录号WOS:000486571600001
源URL[http://119.78.100.138/handle/2HOD01W0/9624]  
专题水质生物转化研究中心
通讯作者Guo, Jinsong
作者单位1.Univ Adelaide, Sch Earth & Environm Sci, Adelaide, SA 5005, Australia
2.Univ North Carolina Chapel Hill, Inst Marine Sci, Morehead City, NC 28557 USA
3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, CAS Key Lab Reservoir Environm, Chongqing 400714, Peoples R China
4.Chongqing Univ, MOE, Key Lab Three Gorges Reservoir Reg Ecoenvironm, Chongqing 400045, Peoples R China
推荐引用方式
GB/T 7714		 Li, Zhe,Ma, Jianrong,Guo, Jinsong,et al. Water quality trends in the Three Gorges Reservoir region before and after impoundment (1992-2016)[J]. ECOHYDROLOGY & HYDROBIOLOGY,2019,19(3):317-327.
APA Li, Zhe.,Ma, Jianrong.,Guo, Jinsong.,Paer, Hans W..,Brookes, Justin D..,...&Lu, Lunhui.(2019).Water quality trends in the Three Gorges Reservoir region before and after impoundment (1992-2016).ECOHYDROLOGY & HYDROBIOLOGY,19(3),317-327.
MLA Li, Zhe,et al."Water quality trends in the Three Gorges Reservoir region before and after impoundment (1992-2016)".ECOHYDROLOGY & HYDROBIOLOGY 19.3(2019):317-327.

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来源：重庆绿色智能技术研究院

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