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Eco-environment of reservoirs in China: Characteristics and research prospects TEXT SIZE: A A A
China is home to 97,246 reservoirs, most of which are sub-deep water reservoirs characterized by seasonal stratification and multiple interfaces in the water body. The prominent eco-environmental problems, such as eutrophication and accidental deterioration in water quality, restrict reservoir construction. Compared to natural lakes, reservoirs have specific geologic backgrounds and eco-environmental characteristics, which manifest in the following aspects: (a) the origin of the water environment and ecological system of the reservoir is different from natural lakes; (b) sediment is rich in organic matter and nutrients; (c) water eutrophication and heavy metal pollution are tightly interlocked; (d) multi-interface and seasonal stratification control the key physicochemical and biological processes; (e) the cumulative effect of the material cycle has an important influence on the water environment and ecological security; (f) artificial regulation of water level leads to the ecological degradation of the hydro-fluctuation belt; and (g) the slow response of the aquatic ecosystem to the reduction of external load. Research on the eco-environment of sub-deep water reservoirs trails that of natural lakes in China. After describing the eco-environmental characteristics of reservoirs in China, we address potential challenges and propose future research directions to develop a full understanding of the complex biogeochemical processes prevalent in reservoirs.
 

Publication name

 PROGRESS IN PHYSICAL GEOGRAPHY, 42 (2):185-201; 10.1177/0309133317751844 APR 2018

Author(s)

 Chen, Jingan; Wang, Jingfu; Guo, Jianyang; Yu, Jia; Zeng, Yan; Yang, Haiquan; Zhang, Runyu

Corresponding author(s) 

 CHEN Jingan 
 chenjingan@skleg.ac.cn  
 Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China. 

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