基于负水头下土壤水分一维水平运动理论与实验研究  

Hydraulic Characteristics of One-dimensional Horizontal Soil Water Flow

作　　者：邹朝望[1] 薛绪掌[1] 张仁铎[2] 

机构地区：[1]国家农业信息化工程技术研究中心 [2]中山大学环境科学与工程学院,广东广州510275

出　　处：《土壤通报》2006年第5期841-846,共6页Chinese Journal of Soil Science

基　　金：国家自然科学基金资助项目(50479064;50279038);北京市科技新星计划资助项目(H020821340130)

摘　　要：基于Gardner表征的土壤水分特征曲线和Russo表征的非饱和土壤导水率形式,推导了负水头下水分入渗累计入渗量、入渗率、湿润峰以及入渗时间之间的理论关系,分析了负水头下水分入渗土壤含水量剖面分布以及剖面含水量的预测。并利用实验的数据验证了这些变量的关系,验证结果表明这些关系是合理的。Based on the soil water retention function of Gardner and the hydraulic conductivity thnction of Russo, theoretical relationships were developed to describe cumulative infiltration, infiltration rate, and wetting front under one dimensional water flow under a boundary condition of negative hydraulic heads. Lab experiments were conducted to measure infiltration data under various conditions. The theoretical relationships were shown to be reasonable based on the experiment data.

关 键 词：负水头 非饱和土壤导水率 湿润峰 

分 类 号：S152.7[农业科学—土壤学]