将土壤水力特性在空间上的分布以若干随空间位置变化的参数进行表征，应用随机空间函数（随机场）来描述这些参数在空间上的变化特征，并根据有关参数随机场的统计特性来描述土壤水力特性的空间变异性．分别应用ＭＶＡＲ（１）、ＮＮＭ随机生成模型对一维及二维随机场进行了模拟，并比较了不同生成模型对一维随机场模拟的结果 The spatial distribution of soil hydraulic properties is characterized by a number of parameters that vary with the position of the space. Stochastic space functions (random fields) are used to characterize the spatial variation of these parameters and are described according to the statistical properties of the random fields of the relevant parameters Spatial variability of soil hydraulic properties. The MVAR (1) and NNM models are used to simulate the 1D and 2D random fields, respectively, and the results of one-dimensional random field simulation with different generated models are compared