On Resistance of Eol ian Sandy Soil Moisture to Wind Erosion

Dong Zhi-bao; Chen Wei-nan; Li Zhen-shan; Yang Zuo-tao

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On Resistance of Eol ian Sandy Soil Moisture to Wind Erosion

- On Resistance of Eol ian Sandy Soil Moisture to Wind Erosion
- Bulletin of Soiland Water Conservation Vol. 15, Issue 2, Pages: 17-23(1996)
- 作者机构：
  
  中国科学院兰州沙漠研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1996
- 稿件说明：
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Dong Zhi-bao, Chen Wei-nan, Li Zhen-shan, et al. On Resistance of Eol ian Sandy Soil Moisture to Wind Erosion[J]. Bulletin of Soiland Water Conservation, 1996, 15(2): 17-23.
DOI：

Dong Zhi-bao, Chen Wei-nan, Li Zhen-shan, et al. On Resistance of Eol ian Sandy Soil Moisture to Wind Erosion[J]. Bulletin of Soiland Water Conservation, 1996, 15(2): 17-23. DOI：

摘要

以典型风沙土为实验材料

通过风洞模拟实验探讨了风沙土水分含量对临界风蚀风速及风蚀强度的影响。研究结果表明：风沙土临界风蚀风速随含水率的增加呈线性增大；风蚀率(风蚀强度)随含水率的增加呈二次幂函数减少。综合的风沙土水分抗风蚀模型可以表达为Ｅ＝Ａ＋Ｂ(Ｖ／Ｍ)￣２其中

Ｅ为风蚀率；ｙ为实际作用风速；Ｍ为土壤含水率。

Abstract

Taking the typical eolian sandy soil from Liudaogou micro-river basin of Shenmu county

north Shaanxi

the influence of moisture on the resistance of studied soil to wind erosion is ascertained by means of wind tunnel experiment.The conclusions reached are as follows:the threshold wind erosion velocity of eolian sandy soil increases linearly with an increase of moisture content;the wind erosion rate(intensity)reduces with an increase of moisture content by the sec-and power function.A comprehensive moisture-based model suggested for the resistance of eolian sandy soil to wind erosion has be obtained.

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