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

Chen, Ang; Wu, Miao; Chen, Kaiqi; Sun, Zhixin; Shen, Chen; Wang, Pengyuan

doi:10.1016/j.wse.2017.01.008

Cited by 44 publications

(37 citation statements)

References 73 publications

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“…Although widespread implementation of environmental flows has been constrained by a number of challenges (Le Quesne et al, 2010), implementation of environmental flows has been seen in an increasing range of contexts (Harwood et al, 2017). In China, the concept of environmental flows has gained currency in the river basin management discourse in the last decade (Chen et al, 2016), but examples of implementation remain rare (Sun et al, 2008;Li et al, 2009;Chen and Zhao, 2011). Nevertheless, recent shifts in policy priorities that emphasize the need for more environmentally sustainable approaches to socio-economic development have led to an increased focus on river restoration, including environmental flow implementation (Speed et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Managing the Three Gorges Dam to Implement Environmental Flows in the Yangtze River

Cheng¹,

Opperman

Tickner

et al. 2018

Front. Environ. Sci.

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Section: Introductionmentioning

confidence: 99%

Managing the Three Gorges Dam to Implement Environmental Flows in the Yangtze River

Cheng¹,

Opperman

Tickner

et al. 2018

Front. Environ. Sci.

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“…In the SRM, the slope stability safety factor can be defined according to the reduction degree of geotechnical shear strength as the slope just reached the critical failure state [5]. Namely the safety factor is the ratio of the actual shear strength of rock and soil mass to the reduced shear strength of critical damage:…”

Section: Strength Reduction Methods (Srm)mentioning

confidence: 99%

Dynamic Stability Safety Evaluation of Consequent Rock Slopes

Shi¹,

Du²,

Chen³

et al. 2018

Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017)

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“…Because of the diversity of fish species in China, it is difficult to determine a unified environmental flow assessment criterion for fish species. From the main issue analysis of dam projects in China [22], the quantity, protection class, and the endangered category of rare and endangered fish species were chosen as specific hydrobiological indicators.…”

Section: The Classification Frameworkmentioning

confidence: 99%

Classifying Dams for Environmental Flow Implementation in China

Chen

McClain

2019

Sustainability

Self Cite

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The implementation of environmental flows is of the utmost importance for ecosystem protection and restoration in dammed rivers. A key challenge in optimizing dam regulation is the uncertainty of the ecohydrology relationship between flow release and ecological response. In the present paper, we develop a framework of dam classification to organize the categories of the ecohydrology relationship for implementing environmental flows. Dams are classified from three major categories that differ in dam properties, hydrological alteration, and downstream hydrobiological diversities based on the relationship of hydrology and ecology. Finally, 773 dams in China are screened and ranked into four classes involving a great diversity of environmental flow components. A classification of dams that utilizes the implementation of environmental flows is presented. (1) Class 1 includes dams with rare and endangered fish species in the downstream. It is the category with the highest priority for environmental flow releases and regulation, requiring continuous flow and flood pulse components for fish spawning and migration. (2) Class 2 includes dams with significant hydrological alteration in the downstream. It is the category with second priority for environmental flow releases and regulation, requiring natural hydrological regimes simulation or complete flow component recovery for optimizing the flow duration curve and mitigating adverse impacts of dam operation. (3) Class 3 includes dams with a high degree of regulation where there is urgency for environmental flow releases and regulation, requiring that minimum flow is guaranteed by cascade reservoir regulation. (4) Class 4 includes dams with a low degree of regulation where there is less urgency for environmental flow releases and regulation. This classification method is important for future research, including environmental flow release regulation and the effectiveness evaluation of environmental flow adaptive management. It will be useful for guiding the implementation of environmental flows.

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

Cited by 44 publications

References 73 publications

Managing the Three Gorges Dam to Implement Environmental Flows in the Yangtze River

Managing the Three Gorges Dam to Implement Environmental Flows in the Yangtze River

Dynamic Stability Safety Evaluation of Consequent Rock Slopes

Classifying Dams for Environmental Flow Implementation in China

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