本文利用计算机研究了地质-地球物理区域化变量的变异特性。由于这类变量的变化具有双重性,即随机性和相关性,不可能用一般解析函数表达。利用研究区域内已有资料点的数据,可以计算出一个相应的变异函数,即实验半变异函数。该变异函数可以用来分析研究区域内各种区域化变量的变异特性。为了扩大实验半变异曲线的适用范围,可用一种理论模型进行模拟。实际应用表明,利用计算机技术,可以比常规的手工方式更迅速、更准确地求得变程a、矿块效应系数C_0及基台值C三个变异特征参数。 In this paper, the variation characteristics of geo-geophysical regionalization variables are studied by computer. Due to the duality of the changes of such variables, namely randomness and correlation, it is impossible to express them by the general analytic functions. Using the data from existing data points in the study area, a corresponding variation function, the experimental semivariogram, can be calculated. This variogram can be used to analyze the variability of various regionalized variables within the study area. In order to expand the scope of experimental semivariogram, a theoretical model can be used to simulate. The practical application shows that the use of computer technology can be more quickly and accurately than the conventional manual methods to find the three parameters of variation range a, nugget effect coefficient C_0 and abutment value C.