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The Benefit Analysis for Different Layers of Grass Vegetation Reducing Surface Runoff and Sediment Yield
Authors
安韶山
白红英
郑粉莉
Publication date
1 January 2005
Publisher
Abstract
研究草被地上和地下部分拦蓄径流和减少泥沙效益对科学评价草被防止土壤侵蚀的作用有重要科学意义。采用模拟降雨试验,分析了草被地上和地下部分拦蓄径流和减少泥沙的效益。结果表明,草被与森林植被一样,能有效防止土壤侵蚀。当草地地面覆盖达90%时,草被拦蓄径流效益达90%以上,而基本上无侵蚀发生。草被地上部分(茎枝+枯落物)拦蓄径流效益为23.7%,其中茎枝部分拦蓄径流效益为9.0%和枯落物层拦蓄径流效益为14.7%,减少泥沙效益为44.6%;草被地下部分土壤体拦蓄径流效益为72.7%,拦蓄泥沙效益为55.4%
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018