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地表砾石对降雨径流及土壤侵蚀的影响
引用本文:符素华,路炳军,叶芝菡.地表砾石对降雨径流及土壤侵蚀的影响[J].水土保持学报,2010,24(2).
作者姓名:符素华  路炳军  叶芝菡
作者单位:1. 地表过程与资源生态国家重点实验室,北京师范大学地理学与遥感科学学院,北京,100875
2. 北京水土保持工作总站,北京,100038
3. 北京市水利科学研究所,北京,100044
基金项目:国家重点基础研究发展规划项目“中国主要水蚀区土壤侵蚀过程与调控研究(2007CB407204)”; 国家自然科学基金项目(40201031)
摘    要:山区土壤表层常有大量砾石覆盖,地表砾石覆盖会对降雨入渗产生影响,从而影响径流和土壤侵蚀。利用人工降雨试验来评价北京山区普通褐土上不同砾石覆盖度对径流和土壤侵蚀的影响。试验降雨强度为30,67,92mm/h,土盘(1m×0.5m)坡度为20°,砾石覆盖度为0,5%,10%,20%,40%和60%。研究结果表明:对试验土壤,径流量随砾石覆盖度增加呈线性减小。水流流速和土壤侵蚀量随砾石覆盖度的增加呈负指数递减。降雨强度对径流量和土壤侵蚀量与砾石覆盖度之间的关系不存在影响。研究结果可为北京山区的土壤侵蚀预报提供数据基础。

关 键 词:砾石覆盖  径流  土壤侵蚀  

Effects of Rock Fragments on Runoff and Soil Erosion
FU Su-hua,LU Bing-jun,YE Zhi-han.Effects of Rock Fragments on Runoff and Soil Erosion[J].Journal of Soil and Water Conservation,2010,24(2).
Authors:FU Su-hua  LU Bing-jun  YE Zhi-han
Institution:FU Su-hua1,LU Bing-jun2,YE Zhi-han3 (1.State Key Laboratory of Surface Process , Resource Ecology,School of Geography,Beijing Normal University,Beijing 100875,2.Beijing Water , Soil Conservation Center,Beijing 100038,3.Beijing Hydraulic Research Institute,Beijing 100044)
Abstract:Soil commonly contains large numbers of rock fragments in surface layer.Rock fragments on the soil surface have effects on infiltration,thus affect runoff and soil erosion.In this study,simulated rainfall experiments have been conducted on soil tray with 1 m long and 0.5 m wide in the laboratory in order to evaluate the effects of rock fragment cover on runoff and soil erosion.3 rainfall intensities (30,67,92 mm/h) and 6 levels of cover of rock fragments (0,5%,10%,20%,40%,and 60%) were included.The experime...
Keywords:rock fragment cover  runoff  soil erosion  
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