| 土壤非饱和带中的优先流 |
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| 引用本文： | 刘亚平,陈川.土壤非饱和带中的优先流[J].水科学进展,1996,7(1):85-89. |
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| 作者姓名： | 刘亚平 陈川 |
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| 作者单位： | 1.Department of Land Air and Water Resources University of California at Davis Davis CA 95616 USA; |
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| 摘 要： | 优先流是近年来研究土壤水运动所提出的术语。在某些条件下,水分在非饱和带中的运移不是简单的一维垂直向下流动,而是越过大部分土壤的体积沿着优先途径流动。优先流通常分为三类:大孔隙流,漏斗流,指流。本文分别介绍了这三类流动形式,并回顾了有关优先流的理论和实验的研究成果。
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| 关 键 词： | 非饱和带 土壤水运动 优先流 |
| 收稿时间： | 1994-07-10 |
Introduction to Preferential Flow in Unsaturated Soil |
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| Yaping Liu,Chuan Chen.Introduction to Preferential Flow in Unsaturated Soil[J].Advances in Water Science,1996,7(1):85-89. |
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| Authors: | Yaping Liu Chuan Chen |
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| Institution: | 1.Department of Land, Air and Water Resources, University of Californai at Davis, Davis, CA 95616, USA;2.Hawaii Institute of Geophysics, University of Hawaii at Manba, Honolulu, Hawaii 96822 USA |
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| Abstract: | Preferential flow is applied to describe heterogeneous flow phenomena through porous media. Under certain conditions,water and chemical movement in unsaturated soil is not just a simple one dimensional movement,instead often a heterogeneous flow situation,due to soil structures or wetting front instability. Preferential flow consists of macropore flow,funnel' flow,and finger flow. This paper reviews and summarizes studies on three types of preferential flow phenomena in theory,experiment and modeling. |
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| Keywords: | unsaturated Bone soil water movement preferential flow |
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