NDLI: Ecological hydrograph based on Schizothorax chongi habitat conservation in the dewatered river channel between Jinping cascaded dams

Content Provider	Springer Nature Link
Author	Li, RuoNan Chen, QiuWen Duan, Chen
Copyright Year	2011
Abstract	Hydropower development changes the river hydrological regime, thereby altering river ecosystem significantly. One important measure for reducing degradation of ecosystem is to determine ecological flow and implement it by reservoir operation. This paper described a method to calculate river ecological flow based on fish habitat conservation and applied it to Jinping River Bend of Yalong River. Schizothorax chongi was selected as target species, and the fish habitat model coupling with water environmental model was developed according to the relationship between fish and water environment factors. Moreover, improved hydraulic habitat suitability index (IHHS) and habitat fragment index (HFI) varying with discharge were discussed in this paper. Habitat area representing average annual flow was taken as a reference, and then ecological hydrographs under different habitat conservation levels were calculated considering season variation and life stages of fish. Compared to the natural condition, the model results indicated that the reservoir operation clearly influenced the habitat of the target fish. It was proposed to ensure flow releases to maintain 70%–90% habitat in section after joint while about 60% before joint.
Starting Page	54
Ending Page	63
Page Count	10
File Format	PDF
ISSN	16747321
Journal	Science in China Series E: Technological Sciences
Volume Number	54
Issue Number	1
e-ISSN	1862281X
Language	English
Publisher	SP Science China Press
Publisher Date	2011-11-15
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	river habitat habitat assessment ecological flow ecological hydrograph Engineering
Content Type	Text
Resource Type	Article
Subject	Engineering Materials Science

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Ecological hydrograph based on Schizothorax chongi habitat conservation in the dewatered river channel between Jinping cascaded dams

Ecologically-friendly operation scheme for the Jinping cascaded reservoirs in the Yalongjiang River, China

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Research on the multi-level intake water temperature effect of the Yalong River Jinping-I hydropower project

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Ecological hydrograph based on Schizothorax chongi habitat conservation in the dewatered river channel between Jinping cascaded dams

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