水土保持学报2012，Vol.26Issue(5)：217-219,223,4.
降雨条件下分层土壤入渗特性
Stratified Soil Infiltration Characteristics During Rainfall
摘要
Abstract
Based on the laboratory rainfall-infiltration experiments,different stratified soil infiltration characteristics were studied with different combination of clay,loam and sandy soil.The results show that: Under vertical rainfall infiltration,stratified soil infiltration characteristics is determined by the combination of soil layered pattern;soil cumulative infiltration has a linear relationship with wetting front distance;during layered soil infiltration,when coarser sand covers finer sand and rainfall intensity is greater than fine sand steady infiltration rate,the profile above the wetting front reaches or approaches saturation.Whilst in the case that finer sand covers coarser sand and rainfall intensity is greater than fine sand steady infiltration rate,except for the profile of fine sand part is saturated,the remaining coarse sand profile cannot be saturated,and its saturated degree is related to coarse sandy soil water holding capacity.关键词
入渗/分层土壤/土壤累计入渗量/湿润锋距离Key words
infiltration/layered soil/soil cumulative infiltration/wetting front distance分类
农业科技引用本文复制引用
甘永德,贾仰文,仇亚琴,王康..降雨条件下分层土壤入渗特性[J].水土保持学报,2012,26(5):217-219,223,4.基金项目
国家自然科学基金项目 （）
国家重点基础研究发展规划项目 （）
国家自然科学创新研究群体基金项目 （）
