摘要
LEACHC是描述土壤水分运动、溶质运移和盐分积累的盐度模型。它利用一维Richard方程有限差分法模拟水分流动,利用对流-弥散传输模型描述溶质运移,利用化学平衡子程序处理土壤剖面化学平衡过程。系统地介绍了LEACHC模型及基本原理,总结了国外学者利用LEACHC模型进行土壤盐碱化预测预报研究的基本情况,以期对中国土壤盐碱化预测预报研究有所借鉴。
LEACHC is the salinity model deseribing water flow,solute movement and salt accumulation in soil profiles. Soil -water flow is simulated through the application of the one-dimensional finite difference method of the Richard＇s equation. The convection-dispersion equation （CDE） is used in the model to simulate solute transport. The equilibrium chemistry is simulated in a chemical equilibrium subroutine. The performance of LEACHC for the prediction of the salinity has been validated in some researches done hy foreign scholars. In this paper the LEACHC model and its basic principle was systematically presented and the fundamental state that some foreign scholars used LEACHC to predict soil salinity in their research was summarized.
出处
《安徽农业科学》
CAS
北大核心
2005年第12期2385-2387,2451,共4页
Journal of Anhui Agricultural Sciences
基金
中国科学院知识创新工程项目(KZCX1-SW-19-5-01)
东北地理所学科前沿领域项目(KZCX3-SW-NA-06)
关键词
盐碱化
盐度模型
预测预报
数值预报
Salinization and alkalization
Salinity model
Forecast study
Numerical prediction
