| 土壤水分与溶质运移机制的分形理论研究进展 |
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| 引用本文： | 李云开,杨培岭,任树梅,罗远培.土壤水分与溶质运移机制的分形理论研究进展[J].水科学进展,2005,16(6):892-899. |
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| 作者姓名： | 李云开 杨培岭 任树梅 罗远培 |
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| 作者单位： | 1.中国农业大学水利与土木工程学院, 北京, 100083; |
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| 基金项目： | 国家高技术研究发展计划(863)资助项目(2001AA5270152002AA2Z4281)~~ |
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| 摘 要： | 土壤中水分和溶质运移一直是土壤-水环境系统中的研究热点,也是目前仍未得到很好解决的问题.将分形理论应用于土壤水分溶质运移机制的研究,探讨其领域中的众多复杂问题,是一种全新的思路和方法.在对土壤结构定量化的分形表征进行简要阐述的基础上,重点介绍了分形理论在水分特征曲线和水力传导度等土壤水分运动基本参数的分形模型、土壤水分运移过程模拟、土壤溶质运移的非费克现象、弥散度的尺度效应以及溶质运移机制研究方面所取得的一系列成果,并就分形理论今后在土壤水分、溶质运移研究中的应用作了展望.
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| 关 键 词： | 土壤水分 溶质运移 运移机制 分形理论 |
| 文章编号： | 1001-6791（2005）06-0892-08 |
| 收稿时间： | 2004-08-03 |
| 修稿时间： | 2004-10-30 |
Development in research on the fractal theory of soil water and solute transport mechanisms |
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| LI Yun-kai,YANG Pei-ling,REN Shu-mei,LUO Yuan-pei.Development in research on the fractal theory of soil water and solute transport mechanisms[J].Advances in Water Science,2005,16(6):892-899. |
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| Authors: | LI Yun-kai YANG Pei-ling REN Shu-mei LUO Yuan-pei |
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| Affiliation: | 1.College of Hydraulic and Civil Engineering, China Agricultural University, Beijing 100083, China;2.China Academy of Agricultural Science, Beijing 100081, China |
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| Abstract: | The Soil water and the solute transport are a hotspot in the research of the soil-water environment,and it is the problem that has no better solutions.It is a new ideal and method that the soil water and the solute are studied with the fractal theory to settle the complex problems in this area.Based on the expounding in briefly that soil structure is measured with fractal theory,a series of results in the soil water and the solute transport mechanisms with the fractal theory are reviewed particularly,including its basic parameters the non-Fick phenomenon of the soil solute transport and the scale effect of dispersion coefficient.It is hoped that the Fractal theory will be used in the future to research the soil water and the solute transport process. |
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| Keywords: | soil water solute transport mechanism fractal |
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