Volume 9 Issue 4
Oct.  2016
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Article Contents
Ang Chen, Miao Wu, Kai-qi Chen, Zhi-yu Sun, Chen Shen, Peng-yuan Wang. 2016: Main issues in research and practice of environmental protection for water conservancy and hydropower projects in China. Water Science and Engineering, 9(4): 312-323. doi: 10.1016/j.wse.2017.01.008
Citation: Ang Chen, Miao Wu, Kai-qi Chen, Zhi-yu Sun, Chen Shen, Peng-yuan Wang. 2016: Main issues in research and practice of environmental protection for water conservancy and hydropower projects in China. Water Science and Engineering, 9(4): 312-323. doi: 10.1016/j.wse.2017.01.008

Main issues in research and practice of environmental protection for water conservancy and hydropower projects in China

doi: 10.1016/j.wse.2017.01.008
Funds:  This work was supported by a General Financial Grant from the China Postdoctoral Science Foundation (Grant No. 2016M592404) and the projects funded by China Three Gorges Corporation (Grants No. 0799556 and 0799564).
More Information
  • Corresponding author: Ang Chen
  • Received Date: 2015-12-28
  • Rev Recd Date: 2016-08-22
  • In this paper, we generally summarize the main issues in the operational period of water conservancy and hydropower projects in China over the past several decades. First, the adverse impacts of these projects since the technical guidelines were proposed in 2006 are analyzed. Then, combined with projects and experience from 2006 to 2014, the main issues from four aspects are summarized: (1) There exist many questions in the design and construction of fishways, which are useful for fish migration, and the migration effects are not as expected. (2) Temperature stratification impacting the downstream fish is the major impact of temperature, and alters the fish spawning in the reproduction season. (3) Ecological base flow has been one of the primary questions of the last 30 years in China, the greatest related difficulty being quantification of the amount and flow process necessary to satisfy fish life history. (4) Fish habitat protection and restoration are the most popular topics in recent years with the development of river ecosystem restoration. Fish habitat loss due to the impacts of dam construction and habitat fragmentation has become more and more serious. These four issues are now the main difficulties in water project management, and interact with each other to bear combined effects on river ecosystems. The issues of eco-hydraulic consideration in the design period are the key factors. Finally, the future priorities of research and practice of environmental protection for water conservancy and hydropower projects in China are proposed. The main purposes of this paper are to enhance the scientific research, monitoring, and assessment of operating effectiveness.

     

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