Study on Rainfall and Erosion in Loess Gulled-Hilly Area

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- Study on Rainfall and Erosion in Loess Gulled-Hilly Area
- Vol. 15, Issue 4, Pages: 47-50(2001)
- 作者机构：
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- DOI：
  CLC： S157.1
- Published：2001
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WEI Tian-xing Soil and Water Conservation Laboratory of Beijing Forestry University. Study on Rainfall and Erosion in Loess Gulled-Hilly Area[J]. 2001, 15(4): 47-50.
DOI：

WEI Tian-xing Soil and Water Conservation Laboratory of Beijing Forestry University. Study on Rainfall and Erosion in Loess Gulled-Hilly Area[J]. 2001, 15(4): 47-50. DOI：

根据长期定位水土流失与防护林效益观测资料

分析了黄土残塬沟壑区吉县的降雨侵蚀。研究结果表明

当降雨达到一定量级才能产生土壤侵蚀

侵蚀性降雨的雨量标准为 10 mm/次

产生严重土壤侵蚀的降雨标准为≥ 3 0 mm/次

造成极为严重侵蚀的是降水频率为 5 %的大暴雨和降雨强度≥ 1.0 mm/ min的降雨。场降雨量、降雨强度与小流域产沙模数呈线性相关。因此

防止暴雨侵蚀是防治水土流失的关键。

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