空间异质性定量研究理论与方法

Theory and methodology of spatial heterogeneity quantification.

通过变异函数对空间异质性定量研究进行了讨论．结果表明，空间异质性定量研究应从空间特征和空间比较两方面去考虑．对空间特征，着重讨论怎样应用变异函数将空间异质性分解成各定量组分；确定空间异质性程度；探测空间异质性变化的尺度．对空间比较，怎样对同一变量和不同变量用变异函数比较空间异质性时的统计检验；采用标准化变异函数比较同一地点上的不同变量的空间异质性．最后通过阔叶红松景观中林型和土壤类型的空间异质定量研究实例验证了上述理论与方法．

In this paper, semivariogram was used to quantify the spatial heterogeneity in landscape. It was suggested that spatial characteristics and spatial comparison were the main aspects of spatial heterogeneity quantification. For spatial characteristics, the authors emphatically discussed how to use semivariogram to decompose spatial heterogeneity into quantifiable components, to determine the degrees of spatial heterogeneity, and to detect the scale at which spatial heterogeneity changes. For spatial comparison, the authors expounded how to statistically test the parameters of semivariograms to compare the spatial heterogeneity between same variable at two sites or different variables at same site, and put forward the standardized semivariograms to compare the spatial heterogeneity with different variables at the same site. The introduced theory and methodology were examined by the example of spatial heterogeneity of forest types and soil types in landscape of broadleaf Korean pine forests.