人工植被的土壤水分状况与水分动态研究

Research Advance of Soil Water Conditions andDynamics of Planted Forest

该文综合阐述了不同的人工植被在干旱、半干旱、半湿润地区普遍存在着的土壤干化现象。文章着重介绍了不同的植被类型在不同的土壤剖面层次、不同的季节 ,土壤水分存在不同的动态变化规律 ,变异系数的大小 ,直接反映了当地土壤干化的程度和年内水分供需矛盾状况。利用入渗规律 ,增加水分循环的途径 ,使土壤干层水分得到补给 ,是避免人工植被土壤干化的一种有效途径。

The article synthetically expounds that soil drought of planted forest is found in drought,semi drought,arid and semi arid regions,The article emphatically presents different planted vegetations have different dynamics of soil water in different season and soil section.With statistical test of difference of standard deviation and coffcient of the vertical variation of soil moisture,different sites have different conditions of soil drought and soil water.It is an efficient way to make surface water penetrate ground water,increase the ways of water circle and improve the conditions of soil moisture of planted vegetations with water penetrating rules.