土壤水分特征曲线传递函数的研究进展

Use some easily available soil physical and chemical parameters (such as: particle composition, bulk density, organic matter, etc.) can be estimated hydraulic properties of soil (soil water characteristic curves and soil hydraulic conductivity), these methods are collectively referred to as soil Pedo-transfer function(PTFs).This paper provides as a review of the construct methods , theory and application of PTFs about the soil water characteristic curves. According to the theoretical background and the basic assumption, indirect methods may be classified into three categories, statistical models, physico-empirical method and fractal method. It also analyzed advantages and disadvantages of various PTFs, pointed out shortages of the PTFs, predicted directions of future development and foretold prospects of PTFs about the soil water characteristic curves.