干旱地区农业研究2012，Vol.30Issue(4)：14-19,31,7.
不同降雨历时梯田和坡耕地的土壤水分入渗特征
Characteristics of soil water infiltration in sloping land and level terrace under different rainfall duration
摘要
Abstract
Hydrus - ID model was applied to simulate soil water infiltration under different raining duration in sloping farmland and level terraces. The results showed that HYDRUS - ID proved to be a powerful and useful tool for simulating the water movement of soil in sloping land and level terrace. In the soil depth, the CV of soil moisture at 0 - 40 cm was in medium variation, it decreased with the depth, while in other depths the CV was in weak variation. Runoff occurred at 23 min in the 1.45 mm/min rainfall intensity in sloping field, however, there was no runoff in the whole process in level terrace. And in the same condition, the infiltration and soil moisture content in level terrace were higher than these in sloping land. When rainfall duration was 10 min, the water content in soil depth of 0 ~ 15 cm in level terrace was 0.13% ~ 1.65% more than that in sloping land, and in the soil depth of 30 ~ 200 cm, there was no infiltration in either level terrace or sloping land. In soil depth of 0 - 20 cm, the moisture content in level terrace were 0.05% -2.22% and 0.01 % ~ 2% higher than that in sloping land when rainfall duration was 20 min and 30 min respectively.关键词
不同降雨历时/Hydrus-1D模型/土壤水分入渗/径流Key words
raining duration/Hydrus-ID model/water infiltration/runoff分类
农业科技引用本文复制引用
韩芳芳,刘秀花,马成玉..不同降雨历时梯田和坡耕地的土壤水分入渗特征[J].干旱地区农业研究,2012,30(4):14-19,31,7.基金项目
国家创新引智项目"干旱半干旱地区水文生态及水安全研究" （）
教育部、国家外专局(111引智项目,BO8039) （111引智项目,BO8039）
