摘要
介绍了几种推求非饱和土壤水分运动参数的常用间接方法 ,即基于土壤孔隙大小分布模型、土壤水分再分布过程的方法以及土壤传递函数法 ,并提出了今后应该进一步加强的研究方向 .
The unsaturated soil hydraulic properties are the key parameters to simulate the unsaturated soil moisture movement accurately. However, they are time consuming, inconvenient and expensive to measure directly. As a result, indirect methods for estimating the unsaturated soil hydraulic properties are gradually used widely. Several common indirect methods such as methods based on the soil pore size distribution models, the soil moisture redistribution process, and the pedotransfer functions, are introduced. What′s more, the research areas that should be studied further are discussed and presented.
出处
《应用基础与工程科学学报》
EI
CSCD
2002年第2期103-109,共7页
Journal of Basic Science and Engineering
基金
国家杰出青年科学基金 ( 4 0 0 2 5 1 0 6 )
高等学校博士学科点专项科研基金 ( 2 0 0 1 0 71 2 0 0 2 )资助项目
关键词
非饱和土壤
水分运动参数
水分再分布
孔隙
传递函数法
unsaturated soil hydraulic properties, soil moisture redistribution, soil pore size distribution, pedotransfer functions
