土壤中指流的研究现状与发展趋势

Present Research and Developing Trend of the Finger Flow in Soil

指流是一种常见的土壤水分和溶质运移形式,受许多因素影响,如土壤结构、温度、质地、水分含量等,因此土壤指流的水分运移是一个相当复杂的过程。本文介绍和分析了国内外土壤中指流的研究现状和成果,从指流的形成机理、影响因素等方面揭示了指流的发生和发展过程。根据研究成果,指出近期研究土壤中指流所提出的数学模型:概念模型和连续模型的使用范围,并且分析了该模型目前在应用中存在的问题,最后指出目前指流研究存在的问题和发展趋势,为进一步的研究提供参考。

The finger flow in soil is a common form of water and solute transport. Finger flow is affected by many factors, such as soil structure, temperature, texture, water content and soon. It is a rather complicated process that the water move by finger flow in soil. This paper introduced the research status of domestic and foreign about soil finger flow. At the same time, from the forming mechanism and impacting factors to discover the finger flow and its development. According to research results, the paper pointed out the application area for the mathematical model, conceptual model and the continuous model for the soil finger flow. Finally it indicated the existing problems of recent researches and development trends for the soil finger flow. The results can provide a reference for further research.