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首页> 中文期刊> 《重庆大学学报（英文版）》 >Assessment of dam impacts on river flow regimes and water quality: a case study of the Huai River Basin in P. R. China

Assessment of dam impacts on river flow regimes and water quality: a case study of the Huai River Basin in P. R. China

         
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摘要

The Huai River Basin is a unique area in P.R.China with the highest densities of population and water projects.It is also subject to the most serious water pollution.We proposed a distributional SWAT(Soil and Water Assessment Tool) model coupled with a water quality-quantity balance model to evaluate dam impacts on river flow regimes and water quality in the middle and upper reaches of the Huai River Basin.We calibrated and validated the SWAT model with data from 29 selected cross-sections in four typical years(1971,1981,1991 and 1999) and used scenario analysis to compensate for the unavailability of historical data regarding uninterrupted river flows before dam and floodgate construction,a problem of prediction for ungauged basins.The results indicate that dam and floodgate operations tended to reduce runoff,decrease peak value and shift peaking time.The contribution of water projects to river water quality deterioration in the concerned river system was between 0 to 40%,while pollutant discharge contributed to 60% to 100% of the water pollution.Pollution control should therefore be the key to the water quality rehabilitation in the Huai River Basin.

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  • 来源
    《重庆大学学报（英文版）》 |2008年第4期|261-276|共16页
  • 作者

    XIA Jun; ZHANG Yong-yong; WANG Gang-sheng;

  • 作者单位

    State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University Wuhan 430072 P.R.China;

    Key Laboratory of Water Cycle and Related Land Surface Processes the Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 P.R.China;

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  • 正文语种 chi
  • 中图分类 淮河;
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