摘要
黄土土流是因水分变化引起外力变化的结果。它的发生存在一个临界坡度值,只有大于这临界坡度值的坡面上才会发生土流。黄土土流发生的频率和强度还受坡面坡度组合和植被状况的影响,凹型坡比直型坡、直型坡比凸型坡更容易发生土流。在同样的条件下,当坡度相同时,没有植被覆盖的坡面比有植被覆盖的坡面土流现象更容易出现,更强烈。
The loess flow is the result that the variation of the moiture of the loess makes the exogenic force of the loess to vary. It has a limited slope angle. When the slope angle of the loess is more than the limited one,the loess flow is occuredo The configuration of surface and cover of vegetation have influence on the frequency and intensity of the loess flow.The loess flow of the concave slope is occurred easier than that of the straight one which is easier than that conver one; when there is not vegetation the intensity of the loess flow is more than that when there is vegetation under other conditions are same.
出处
《水土保持通报》
CSCD
北大核心
1990年第4期13-15,共3页
Bulletin of Soil and Water Conservation
