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。
Taking the typical eolian sand y soil from Liudaogou micro- river basin of Shenmucounty.north Shaanxi.the influence of moisture on the resistance of studied soil to wind erosionis ascertained by means of wind tunnel experiment.The conclusions reached are as follows.thethreshold wind erosion velocity of eolian sandy soil increases linearly with an increase of moisturecontent. the wind erosion rate(intensity)reduces with an increase of moisture content by the sec-ond power function. A comprehensive moisture-based model suggested for the resistance of eoliansandysoil to wind erosion has be obtained.
出处
《水土保持通报》
CSCD
北大核心
1996年第2期17-23,共7页
Bulletin of Soil and Water Conservation
基金
国家"八五"重点科技攻关项目
关键词
土壤含水率
临界风蚀风速
抗风蚀模型
风沙土
soil moisture content. th reshold wind eosion velocity. wind erosion rate. com-prehensive moisture- based model for soil resistance to wind erosion
