1.College of Environment and Resourse, Northwest A & F University, Yangling, Shaanxi 712100, China;2.Beijing Forestry University, Beijing 100083, China
Abstract:
Using fixed-point dynamic monitoring methods,soil water in micro-terrain on sunny and semi-sunny slopes in Wuqi County,located in the loess hilly area,is studied.Results show that the micro-terrain has a significant impact on soil moisture content.In terms of soil water on sunny slope,landform units may be ranked in the descendant order of gully,gentle slope,top of gully,steep slope,and extremely steep slope;in terms of soil water on semi-sunny slope,in the descendant order of gentle slope,ephemeral gully,steep slope,and extremely steep slope.The variation coefficient of soil water(0-20cm) in gully is the biggest and the top of gully,the smallest.In the process of vegetation restoration,the allocation of trees,shrubs,and grasses should depend on the characteristics of soil water distribution in micro-terrain based on the principle of "suitable place for tree,forest or grass ".
