摘要
土壤水分入渗过程是土壤水分运移形式之一,对土壤养分和盐分运移及作物根系和微生物活性均有较大影响。目前描述土壤水分入渗过程的模型主要包括:Kostiakov模型、Philip模型、Green-Ampt模型等,Green-Ampt入渗模型表达式简单、涉及参数较少,具有一定的土壤物理基础,是当前使用最广的土壤水分入渗模型。国外关于GreenAmpt入渗模型研究很多,对Green-Ampt模型国外研究现状进行系统地总结。从Green-Ampt入渗模型的基本表达式出发,总结了该模型优缺点及涉及参数(饱和导水率Ks、湿润锋面吸力Sf、土壤水分入渗率i(t)等)的改进算法;综述了Green-Ampt入渗模型的国外应用现状;并对比分析了Kostiakov模型、Philip模型、Green-Ampt模型等,Green-Ampt入渗模型。基于Green-Ampt的国外研究现状,为国内该领域的研究指明方向。
Soil water infiltration process is one of the forms of soil moisture migration, which has a great influence on soil microbial activity, the movement of soil nutrients and salt and growth of crop root. At present, the soil water infiltration model simulates the process of soil water infiltration mainly including Kostiakov Model, Philip Model, Green-Ampt Model. Therefore, Green-Ampt iiffiltration model is currently the most widely used model of soil water infiltration. Researches on Green-Ampt infihration model in foreign countries are numerous. In this paper, the advances in the research on the Green-Ampt infiltration model are summarized and analyzed systematically. Based on the basic expression of Green-Ampt infiltration model, the advantages and disadvantages of the Green-Ampt infiltration model are summarized In addition, the application status of Green-Ampt infiltration model in foreign countries is summarized. Based on the research status of Green- Ampt model in foreign countries, this paper points out the research direction of the Green-Ampt model in our country.
出处
《中国农村水利水电》
北大核心
2017年第10期6-12,22,共8页
China Rural Water and Hydropower
基金
安徽省水利科学研究院青年科技创新基金项目(ky201503)
