浅埋条件下地下水-土壤-植物-大气连续体中水分运移研究综述

地下水-土壤-植物-大气连续体系统中水分运移研究对于水资源的有效利用及生态环境问题有着重要的科学研究意义。在地下水浅埋条件下,地下水、土壤水、植物水、大气水是一个连续的水分过程。通过归纳国内外在地下水浅埋条件下土壤水分运移、土壤盐分运移、以及水盐运移对植物生长发育等生物过程作用的机理等方面的研究成果,综述了近年来国内外在地下水浅埋深条件下GSPAC系统水运移在研究方法、试验和模型方面的进展、各种研究方法的原理、优缺点和今后的研究方向,分析指出定量地研究浅埋深地下水对SPAC系统水分过程、生物过程和能量过程等的作用和影响是一个复合过程,由单个过程研究向过程的综合分析发展难度较大,目前研究相对比较薄弱,是今后需要重点发展的一个方向,在此基础上阐述了GSPAC系统水运移的研究需要深入发展的几个方面。

An Overview of Water Movement in Groundwater-Soil-Plant-Atmosphere Continuum with Shallow Water Table

It is of great significance to quantify water movement through interface between groundwater-soil-plant-atmosphere continuum(GSPAC),especially in the efficient utilization of water resource and the practicable solution to environmental issue.On the condition of shallow water table,groundwater,soil moisture,plant water and atmospheric water exchange continuously forming a continuum.An overview of advances in the mechanism of soil water movement,soil salt movement and their action to plant growth is presented first in this paper.Based on above-mentioned theoretical research,the advance in methods,experiments and simulation model about the water movement through GSPAC system,as well as the principle of these methods and their strength and weakness are summarized.Finally the author draws brief remarks that quantifying the action of shallow groundwater to SPAC system is a compound process,which is a weakness research direction being of integration and complexity,and should pay emphasis on for the future.The development of interface hydrology study could be very helpful to better understanding of hydrological cycle mechanism.At the last problems and the development direction in this field are presented.