Spatial Heterogeneity of Characteristic Functional Parameter of Soil Water Movement: Mathematical Approaches, Sampling Scheme, and Influencing Factors

This article reviewed theoretical analysis approaches about heterogeneity of characteristic functional parameter of soil water movement, and summarized sampling schemes on it. Also the article briefly analyzed factors affecting heterogeneity of characteristic functional parameter of soil water movement. On the basis of above analysis, the article briefly pointed out details under improvement about study of heterogeneity.