Soil Loss and Its Effect on Flooding Catastrophe in Yangtze Dra inage Basin

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Soil Loss and Its Effect on Flooding Catastrophe in Yangtze Dra inage Basin

更新时间：2024-11-07

- Soil Loss and Its Effect on Flooding Catastrophe in Yangtze Dra inage Basin
- Vol. 15, Issue 6, Pages: 9-13(2001)
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  CLC： P333.5
- Published：2001
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Soil Loss and Its Effect on Flooding Catastrophe in Yangtze Dra inage Basin[J]. 2001, 15(6): 9-13.
DOI：

Soil Loss and Its Effect on Flooding Catastrophe in Yangtze Dra inage Basin[J]. 2001, 15(6): 9-13. DOI：

摘要

人口的持续增长和区域开发规模的扩大

导致流域生态环境恶化

水土流失加剧.目前长江流域水土流失面积达56.2万km2

占流域总面积的31.2%

每年土壤侵蚀量达24亿t .严重的水土流失使土层减薄

水源涵养能力下降

土壤水库容减少

造成暴雨径流加速汇集;同时大量泥沙下泄

淤积江河湖库

降低调蓄和行洪能力

抬高洪水水位

加剧了洪灾的发展.综合分析了长江流域水土流失的历史变化和现状

探讨了水土流失对洪灾的影响

在此基础上因地制宜的提出了水土流失的防治对策.

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