土壤水盐运动的时空模式化研究

文章初步分析了土壤水盐运动的机理模型,总结了对流—弥散方程建立的一般思路及数值解法的局限性。基于?S敿际醯慕嵌?概括了土壤水盐运动空间模式化研究内容,探讨了GIS与溶质运移模型的集成问题,指出了Geodatabase、COM等技术的发展为GIS与水盐运动机理模型集成提供了发展契机。

TEMPORAL-SPATIAL MODELLING OF SOIL WATER AND SALT MOVEMENT

The mechanism of water and salt movement in the soil is analyzed by modelling, and general ways of thinking of the setup of a convection-dispersion equation and limitations of the numerical value method are summarized. From the angle of the 3S (GIS, RS and GPS) technology, the research on spatial modelling of the soil water and salt movement is generalized, and the issue of integration of the solute mobilization model and GIS explored. At the same time it is pointed out that development of the techniques of GEODATABASE and COM provides a chance for development of the integration of GIS with the modeling of the mechanism of soil water and salt movement.