Water Conservation Forest Impacts on the Runoff Generation and Sedimentation at Small Watershed Scale in the Miyun Reservoir Watershed

被引:1
|
作者
张志强
秦永胜
余新晓
李亚光
于志民
蔡永茂
蔡保军
王希波
机构
[1] 北京市林业局
[2] 北京林业大学水土保持学院
关键词
水源保护林; 地表径流过程线; 泥沙; 密云水库流域;
D O I
暂无
中图分类号
S727.21 [水源涵养林];
学科分类号
0910 ;
摘要
密云水库集水区水源保护林在北京地区饮用水源保护中起着非常重要的作用.本文给出了该区小流域对比实验的初步研究结果,有林小流域和无林小流域对1996年7月30日降雨过程较为一致的径流响应表明,土壤前期含水量对流域产流有较大的影响,在降雨较多土壤含水量较大的情况下该区产流方式可以表现为饱和地表径流.尽管该区以霍顿超渗产流为主,但对于1997年7月31日至8月1日降雨过程,森林流域产流总量为1393.80m3,无林流域为2202.43m3,森林流域减少洪水总量36.7%,消减洪峰流量达373%.然而,1997年7月19日降雨过程森林流域径流洪峰量与洪水泥沙含量均较无林流域高,这表明预处理措施对径流泥沙过程有极为显著的影响
引用
收藏
页码:89 / 95
页数:7
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