不同土地利用对黄土区小流域坡沟系统土壤水分变化及水盐的响应  

Different Land Uses Responsing to Soil Moisture Changing and Water to Salt on Slope-gully System of Small Watershed on Loess Plateau

作　　者：史长莹[1] 李占斌[1,2] 李鹏[1] 邹兵华[1] 朱冰冰[1] 沈中原[1] 

机构地区：[1]西安理工大学西北水资源与环境生态教育部重点实验室,陕西西安710048 [2]中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌712100

出　　处：《水土保持学报》2009年第2期42-46,共5页Journal of Soil and Water Conservation

基　　金：国家重点基础研究发展计划项目(2007CB407206);国家科技支撑项目(2006BAD09B02);陕西省教育厅科研项目(06JK215);西安理工大学优秀博士生科研基金(207-210009)

摘　　要：采用野外分峁坡和沟坡调查、采样和测量,研究了不同土地利用类型下小流域坡沟系统土壤水分变化的规律及与土壤含盐量的相关关系。结果表明:(1)峁坡和沟坡降雨前与降雨后土体的体积含水量随土层垂直深度呈二项式变化规律。(2)峁坡和沟坡电导率随含水量的变化分别呈幂函数和二项式变化规律。Based on the field investigation, soil sampling and measurement on slope gully system, changes of soil moisture distribution patterns of different land utilization types and its relations with soil salt were studtied. Results indicated that （1） before and after the rainfall event, binomial relation was existed between soil moisture content and soil depth; （2） power function and binomial relation was existed between soil moisture content and electricity conductivity on slope and gully respectively.

关 键 词：黄土高原 坡沟系统 电导率 体积含水量 

分 类 号：S152.7[农业科学—土壤学]