土壤水盐特性空间变异的各向同性近似探讨

On the Approximation of Isotropy for Spatial Variability of Soil Water and Salt

用地质统计学理论从变异函数图、理论变异函数模型的检验结果及 Kriging估值、条件模拟几个方面 ,对二维平面上土壤水盐空间变异的异向性进行了综合分析评价 ,认为在本研究区及条件相似的其它地区可以将土壤水盐各向异性分布近似简化为各向同性。简化了分析、计算工作 ,有较好的实用价值。

Anisotropy and isotropy of spatial variability of soil water and salt was analyzed and evaluated comprehensively on several aspects as variograms, optimum-model test for variograms, kriging estimations and conditional simulations in this paper. Results showed that spatial variability of soil water an salt may be considered approximately as isotropy in sample area and other areas with similar conditions.