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Effect of Moisture Environment of Integrative Controls in WangdonggouWatershed in Gully Region of the Loess Plateau
Authors
何福红
党廷辉
黄明斌
Publication date
1 January 2003
Publisher
Abstract
选择黄土高原沟壑区的长武王东沟小流域为研究对象 ,从流域土地利用变化的减流减沙效应、土壤水分状况、流域的蒸散发和生物利用型土壤干层等几个方面定量地评价了黄土高原沟壑区小流域综合治理对流域水分环境的影响。结果表明 :2 0 0 1年比 1985年耕地面积减少了 2 4 .8% ,草地面积减少了 76 .5 % ,林地面积增加了 75 .7% ,果园面积增加了 10倍 ,森林覆盖率提高了 2 7.8% ,小流域年径流深和侵蚀模数分别减少了 2 1.9%和 2 6 .6 %。同一土地利用类型的 0~ 2 m土壤剖面储水量变化不大 ,2~ 3m土壤剖面储水量大幅度减少 ,土地利用类型改变后 ,土壤剖面平均含水量和土壤储水量均呈现出下降的趋势 ,但苹果地和刺槐林的下降趋势远大于农地和荒草地。与此同时 ,流域总蒸散量比治理前有所增加 ,土壤干层已成为一个普遍存在的水分现
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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oai:ir.iswc.ac.cn/:361005/2082
Last time updated on 21/09/2018