山杨林枯落物对面蚀的影响

韩冰; 吴钦孝; 汪有科; 赵鸿雁

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山杨林枯落物对面蚀的影响

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- 山杨林枯落物对面蚀的影响
- The Impact of Mountain Poplar Forest Litter on Surface Erosion
- 水土保持通报 1995年14卷第3期页码：39-42
- 作者机构：
  
  中国科学院水利部西北水土保持研究所
- 作者简介：
- 基金信息：
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  中图分类号：
- 纸质出版：1995
- 稿件说明：
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韩冰, 吴钦孝, 汪有科, 等. 山杨林枯落物对面蚀的影响[J]. 水土保持通报, 1995,14(3):39-42.

Han Bing, Wu Qinxiao, Wang Youke, et al. The Impact of Mountain Poplar Forest Litter on Surface Erosion[J]. Bulletin of Soiland Water Conservation, 1995, 14(3): 39-42.
韩冰, 吴钦孝, 汪有科, 等. 山杨林枯落物对面蚀的影响[J]. 水土保持通报, 1995,14(3):39-42. DOI：

Han Bing, Wu Qinxiao, Wang Youke, et al. The Impact of Mountain Poplar Forest Litter on Surface Erosion[J]. Bulletin of Soiland Water Conservation, 1995, 14(3): 39-42. DOI：

摘要

中龄山杨林下清除枯落物和原状枯落物（2cm厚），在天然降雨下分别测定溅蚀量和小区冲刷量，研究枯落物对面蚀的影响。表明有原状枯落物覆盖下不发生溅蚀，清除枯落物有微量溅蚀发生。其侵蚀径流量由有枯落物的0.2574m

/(100m

·a)变为清除枯落物的0.2820m

／（100m

·a），增加了侵蚀径流量8.72％，有枯落物覆盖地表其侵蚀模数为1.5915t／（km

·a）比清除枯落物的林下侵蚀模数3.6235t／（km

·a）减少56.08％

在山杨林集水区，因原状枯落物保护较好，所以在该流域几乎不发生面蚀。

Abstract

In order to study the influence of litter to surface erosion

splash amount and plot wash-ing amount were measured respectively on the surface under middle-age Mountain Poplar forest.There are two surface conditions

the first one

litter was cleared off

and another one

the initiallitter(2 cm deepth)still stayed on the ground.The results showed there are not splash erosion onthe surface on which there are initial litter and there are micro splash erosion on the surface onwhich litter had cleared off. The runoff amount were increased by 8.72%from0.257 4m3/(100m2·a)to 0.282 0m3/(100m2·a).The erosion modalus were increased by 56.08%from 1.591 5t/(km2·a)to3.623 5t/(km2·a).Because of good protection of inital litter

surface erosion hardlyoccur in the catchment area of Mountain Poplar forest.

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