KINEMATIC-WAVE MODEL FOR SOIL-MOISTURE MOVEMENT WITH PLANT-ROOT EXTRACTION

被引：11
|
作者：
SINGH, VP [1 ]
JOSEPH, ES [1 ]
机构：
[1] SOUTHERN UNIV,DEPT CIVIL ENGN,BATON ROUGE,LA 70813
来源：
IRRIGATION SCIENCE | 1994年 / 14卷 / 04期
关键词：
D O I：
10.1007/BF00190190
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
A kinematic-wave model is developed for simulating the movement of soil moisture in unsaturated soils with plants. The model involves three free boundaries. Analytical solutions are derived when the; plant roots are assumed to extract moisture at a constant rate and the upstream boundary condition is independent of time. Numerical solutions are the only resort when the moisture extraction and the upstream boundary condition both depend on time.
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页码：189 / 198
页数：10
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