ESTIMATION OF GARDNER-RUSSO MODEL PARAMETERS FOR SOIL WATER RETENTION CURVES USING ONE-DIMENSIONAL INFILTRATION DATA

摘要：

The accuracy of water flow and solute transport predictions obtained depends on the reliability and accuracy of the soil hydraulic properties. The main soil hydraulic properties are the water retention curve and hydraulic conductivity function. Base on the rule of one-dimensional soil water infiltration, the parameters of Gardner-Russo model for soil retention curves were obtained. The relationships of cumulative infiltration, infiltration rate, the wetting front and the infiltration time were logged. Based on the relationship, a simple method to estimated soil hydraulic properties was developed. Numerical simulations of water flow were used to evaluate to the analytical method. The results based upon the numerical data indicate the method of parameters estimation was provided with upper precision.

关键词： Soil water infiltration Numerical simulation Wetting front

作者: Chaowang Zou Xuzhang Xue Renduo Zhang

作者单位: National Engineering Research Center for International Technology in Agriculture State Key Laborator National Engineering Research Center for International Technology in Agriculture School of Environmental Science and Engineering, Zhongshan University, Guangzhou, 510275

会议类型: 国际会议

会议名称: 第三届智能化农业信息技术国际学术会议(The 3rd International Symposium on Intelligent Information Technology in Agriculture)(ISIITA)

会议地点: 北京

会议语种:英文

页码: 272-279

在线出版日期: 2005-10-14（万方平台首次上网日期，不代表论文的发表时间）