土壤斥水性影响土壤水分运动研究进展

发布时间：2018-03-21 14:01

本文选题：土壤　切入点：水分　出处：《农业工程学报》2017年24期 　论文类型：期刊论文

【摘要】：土壤斥水性广泛存在于各类土壤,是影响植物生长、土壤水分运动以及土壤侵蚀等水土过程的重要因素。该文阐述了土壤斥水性的基本概念,介绍了几种常用的斥水性强度测定方法及适用范围。在此基础上,论文对土壤斥水性如何影响土壤水力性质以及水分运动特征等研究现状作了全面评述,重点讨论了近年来该领域的研究热点,如土壤斥水性影响下的指流观测和理论模拟以及斥水性土壤蒸发过程等。最后,提出了相关研究中亟待解决的若干关键科学问题,主要包括确定土壤斥水性影响指流现象和蒸发过程的物理机制的揭示;考虑土壤斥水性参数的土壤水分运动数学模型的构建;以及对新模型的求解及对数值解的理论分析。由于土壤斥水性对土壤水分运动有重要的关联效应,相关问题的深入研究对进一步认识土壤水分运动的内在物理机制具有重要理论意义,也将为掌握和有效利用土壤斥水性提供实践指导。
[Abstract]:Soil water repellent exists widely in all kinds of soils and is an important factor affecting plant growth, soil water movement and soil erosion. The basic concept of soil water repellency is expounded in this paper. This paper introduces several commonly used methods for determining the strength of water repellent and its application scope. On the basis of this, the paper makes a comprehensive review on how soil water repellent affects the hydraulic properties of soil and the characteristics of water movement, and so on. This paper focuses on the research hotspot in this field in recent years, such as finger flow observation and theoretical simulation under the influence of soil water repellent, evaporation process of water-repellent soil and so on. Finally, some key scientific problems that need to be solved urgently in related research are put forward. It mainly includes determining the physical mechanism of the phenomenon and evaporation process of soil water repellent, constructing the mathematical model of soil water movement considering soil water repellent parameters. And the solution of the new model and the theoretical analysis of the numerical solution. Because the soil water repellency has an important correlation effect on the soil water movement, The further study on the related problems is of great theoretical significance to further understand the internal physical mechanism of soil water movement, and will also provide practical guidance for mastering and effectively utilizing soil water repellent.
【作者单位】：阜阳师范学院物理与电子工程学院;南京农业大学资源与环境科学学院;中国农业大学水利与土木工程学院;
【基金】：国家自然科学基金项目(41701254,41771258) 安徽省国际科技合作项目(1403062027) 阜阳市政府-阜阳师范学院横向合作项目(XDHX2016008)
【分类号】：S152.7

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