Effect of Soil Moisture on the Parameter of One-dimensional Vertical Infiltration

摘要：

Based on simplify Darcy formula,the paper analyses deeply the varying law of factors affecting soil infiltration.Experiment on One-dimensional Vertical Infiltration is developed in different soil moisture contents.It concludes the rate of soil-wetted front movement rised with soil water content increasing and the rate of initial infiltration is the same,btit the rate of steady infiltration decreases.The relationship of κ or α in Κостяков model and soil water content is quadratic parabola,and its inflexion is about wither point.With soil water content increasing,unsaturated soil hydraulic conductivity becomes main factor affecting soil water flux,but water potential gradient is decreasing relatively.

关键词： soil moisture content Κостяков model soil-wetted front infiltration parameter

作者: Hu Xiaotao Zheng Jian Sun Huayin Li Zhijun Liu Min

作者单位: Key Laboratory for Agricultural Soil and Water Engineering in Arid Area of Ministry of Education,Northwest A & F University,Yangling,712100,Shanxi,China

会议类型: 国际会议

会议名称: International Conference on Effective Utilization of Agricultural Soil & Water Resources and Protection of Environment and the 4th Annual Academic Conference of Chinese Society of Agricultural Soil and Water Engineering

会议地点: 南京

会议语种:英文

页码: 68-73

在线出版日期: 2006-08-16（万方平台首次上网日期，不代表论文的发表时间）