生态与农村环境学报2012，Vol.28Issue(4)：355-362,8.
黄土丘陵沟壑区深层土壤水分空间变异及其影响因子
Spatial Variation of Deep Soil Water in the Loess Hilly and Gully Regions and Its Influencing Factors
摘要
Abstract
Spatial variation of soil water content in soil profiles 0-8 m deep as affected by landform and vegetation was studied in the Longtan catchment of Dingxi in Gansu Province. Results show that topographic factors, such as position, inclination and exposure of a slope have significant influences on content of shallow soil water. However, spatial variation of deep soil water is more affected by growth conditions of the vegetation thereupon. The vegetations different in growth condition differ in consumption of soil water, thus the better the vegetation grows, the lower the content of deep soil water is. Slope gradient has significant influences on both shallow and deep soil waters. Soil water content is obviously higher in gentle slopes than in steep slopes in the entire 0 - 8 m soil profile. Management measures such as soil and water conservation and tillage activities can effectively enhance infiltration of rain water, thus increasing soil water storage in deep soil layers, and therefore be extrapolated as effective approaches to improvement of soil water regime in this region.关键词
黄土丘陵沟壑区/植被恢复/土壤水分/空间变异Key words
loess hilly and gully region/ vegetation restoration/ soil water/ spatial variation分类
农业科技引用本文复制引用
杨磊,卫伟,陈利顶,贾福岩,王子婷..黄土丘陵沟壑区深层土壤水分空间变异及其影响因子[J].生态与农村环境学报,2012,28(4):355-362,8.基金项目
国家自然科学基金(40925003,40801041,31160099) （40925003,40801041,31160099）
