阴山北麓缓坡丘陵不同植被类型下土壤水分空间分布特征—以武川县为例  

Spacial Distribution Characters of Soil Moisture under Different Vegetations on a Gentle Hill in the North of Yinshan

作　　者：李晓娜[1] 郑大玮[1] 李忠辉[1] 

机构地区：[1]中国农业大学资源与环境学院,北京100094

出　　处：《土壤通报》2005年第1期23-25,共3页Chinese Journal of Soil Science

基　　金：国家重点基础研究发展规划项目"草地与农牧交错带生态系统重建及优化生态-生产范式"(G2000018606)"十五"国家科技攻关"北方旱区农牧交错带防沙型农业发展模式与技术研究"(2001BA508B12)

摘　　要：近年来由于农耕面积的进一步扩大,阴山北麓植被破坏程度加深,水蚀风蚀沙化现象日益严重。本文以内蒙古阴山北麓为研究对象,研究了这一地区缓坡丘陵的土壤水分分布特征及不同植被类型下土壤水分时空分布,为这一地区的生态治理过程中,植被类型、种植模式的选择提供数字依据。结果表明:(1)后山地区与内地相反,缓坡丘陵土壤水分以阳坡为最高,阴坡次之,顶部为最低;(2)该地区的土壤水分分布受植被类型等的影响,表现出一定的空间变异特性。Space distribution characters of soil moisture on a gentle hill of Houshan Area, Inner Mongolia were studied. The results showed that the situation of soil moisture on hills was quite different from that of the main land: (1) the soil water content was higher on the south slope, but lower on the north slope. It was the lowest on the top; (2) the type of vegetation also affected the distribution of soil moisture of a gentle hill in Houshan Area.

关 键 词：土壤水分 农牧交错带 缓坡丘陵 植被 

分 类 号：S152.75[农业科学—土壤学]