| 坡面细沟发生临界条件研究 |
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| 引用本文： | 蔡强国.坡面细沟发生临界条件研究[J].泥沙研究,1998(1):52-59. |
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| 作者姓名： | 蔡强国 |
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| 作者单位： | 中国科学院地理研究所，北京100101 |
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| 基金项目： | 国家自然科学基金委员会支持研究课题 |
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| 摘 要： | 本文在总结前人研究工作的基础上，通过雨后野外细沟侵蚀查资料、试验小区观测和模拟降雨试验研究结果，分析了影响坡面细沟侵蚀的降雨径流侵蚀力与土壤抗蚀性因素；对细沟发生的水流侵蚀力临界条件和浅层洞穴诱发形成细沟的情况进行了较为深入的探讨，并对细沟发生的坡度与土壤抗剪力临界条件作了初步分析。
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| 关 键 词： | 细沟侵蚀 坡面 土壤抗蚀性 发生 模拟降雨 水流侵蚀 坡度 洞穴 观测 浅层 |
Research of rill initiation condition on loess hillslopes |
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| Cai Qiangguo.Research of rill initiation condition on loess hillslopes[J].Journal of Sediment Research,1998(1):52-59. |
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| Authors: | Cai Qiangguo |
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| Abstract: | Based on field data and simulation experiments, rill initiation and factors influencing rill development on ground surface are studied. Factors controlling rill erosion are found to be erosivity, soil shear strength and slope angle. The critical threshold condition for rill initiation can be described by the relationship between stream power and antecedent soil shear strength.According to observation,in addition to the incision by surface flow, the appearance of shallow holes on ground surface induces the development of rills. |
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| Keywords: | Rill erosion influencing factors critical threshold condition |
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