道路边坡土壤水分空间变异性研究  

Study on the Spatial Variability of Soil Water Moisture of the Road Slope

作　　者：刘浩[1] 艾应伟[1] 陈黎萍[1] 杨雅云[1] 许贵文[1] 

机构地区：[1]四川大学生命科学学院、生物资源与生态环境教育部重点实验室,成都610064

出　　处：《水土保持研究》2007年第4期93-94,99,共3页Research of Soil and Water Conservation

基　　金：国家自然科学基金项目（40571064）;四川省科技攻关计划项目（2006210-006）资助.

摘　　要：以上世纪50年代修建成昆铁路时形成的路堑边坡为对象,对道路边坡土壤水分在不同坡度、坡长、坡位的空间变异性进行了观测研究。结果表明：道路边坡土壤水分随着坡度的增大呈现先增大再减小的变化趋势,在同一坡面不同坡位上的土壤含水量表现为坡下〉坡中〉坡上。道路边坡土壤水分随着坡长的增长而减小,最短的10m坡长土壤含水量为23.27%,而最长的40 m坡长土壤含水量为21.78%,最短坡长比最长坡长的土壤含水量增加了6.84%。Based on the railway slope which formed by the building of Chengdu-Kunming railway, the variability of soil water moisture of the road-slope in different slope steepness, slope length and slope position were observed and studied. The results showed that： the soil water moisture has the tendency of increasing at first, and then decreasing with the increasing of slope steepness. The sequence of the magnitude of the heterogeneity is the bottom-slope〉 the mid-slope〉 the top-slope along the same slope. Soil water moisture decreases with the increasing of the slope-length： the shortest （10 m） is 23.7%, and the longest （40 m） is 21.78%, the soil water moisture of the shortest slope is as 1. 0684 times as that of the longest slope.

关 键 词：道路边坡 土壤水分 空间变异 

分 类 号：S152.7[农业科学—土壤学]