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| Titel |
Quantitative analysis on the environmental impact of large-scale water transfer project on water resource area in a changing environment |
| VerfasserIn |
D. H. Yan, H. Wang, H. H. Li, G. Wang, T. L. Qin, D. Y. Wang, L. H. Wang |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 16, no. 8 ; Nr. 16, no. 8 (2012-08-13), S.2685-2702 |
| Datensatznummer |
250013420
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| Publikation (Nr.) |
 copernicus.org/hess-16-2685-2012.pdf |
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| Zusammenfassung |
| The interbasin long-distance water transfer project is key support for the
reasonable allocation of water resources in a large-scale area, which can
optimize the spatio-temporal change of water resources to secure the amount
of water available. Large-scale water transfer projects have a deep
influence on ecosystems; besides, global climate change causes
uncertainty and additive effect of the environmental impact of water
transfer projects. Therefore, how to assess the ecological and environmental
impact of megaprojects in both construction and operation phases has
triggered a lot of attention. The water-output area of the western route of
China's South-North Water Transfer Project was taken as the study area of
the present article. According to relevant evaluation principles and on the
basis of background analysis, we identified the influencing factors and
established the diagnostic index system. The climate-hydrology-ecology
coupled simulation model was used to simulate and predict ecological and
environmental responses of the water resource area in a changing
environment. The emphasis of impact evaluation was placed on the reservoir
construction and operation scheduling, representative river corridors and
wetlands, natural reserves and the water environment below the dam sites.
In the end, an overall evaluation of the comprehensive influence of the
project was conducted. The research results were as follows: the
environmental impacts of the western route project in the water resource
area were concentrated on two aspects: the permanent destruction of
vegetation during the phase of dam construction and river impoundment, and
the significant influence on the hydrological situation of natural river
corridor after the implementation of water extraction. The impact on local
climate, vegetation ecology, typical wetlands, natural reserves and the
water environment of river basins below the dam sites was small. |
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