| LEACHC模型及其在土壤盐碱化预测预报研究中的应用 |
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| 引用本文： | 李彬,王志春,迟春明.LEACHC模型及其在土壤盐碱化预测预报研究中的应用[J].安徽农业科学,2005,33(12):2385-2387,2451. |
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| 作者姓名： | 李彬 王志春 迟春明 |
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| 作者单位： | 1. 中国科学院东北地理与农业生态研究所,吉林,长春,130012;中国科学院研究生院,北京,100049
2. 中国科学院东北地理与农业生态研究所,吉林,长春,130012 |
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| 基金项目： | 中国科学院知识创新工程项目
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东北地理所学科前沿领域项目 |
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| 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。
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| 关 键 词： | 盐碱化 盐度模型 预测预报 数值预报 |
| 文章编号： | 0517-6611（2005）12-2385-03 |
| 收稿时间： | 2005-08-24 |
| 修稿时间： | 2005-08-24 |
ModeI-LEACHC and its Applications in Predicting the Soil Salinization and Aikalization |
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| LI Bin et al.ModeI-LEACHC and its Applications in Predicting the Soil Salinization and Aikalization[J].Journal of Anhui Agricultural Sciences,2005,33(12):2385-2387,2451. |
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| Authors: | LI Bin |
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| Institution: | Northeast Institute of Geography and Agricultural Ecology,the Chinese Academy of Sciences,Changchun,Jilin 130012 |
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| Abstract: | LEACHC is the salinity model describing 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 by 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. |
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| Keywords: | Salinization and alkalization Salinity model Forecast study Numerical prediction |
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