Changes of population distribution reflects the change of interior domains spatial structure, effects the of structure and distribution of Economy, Society, Industry and so on.
人口分布的变动反映了区域内部空间结构的变化，影响着区域内部经济、社会、产业等各种要素结构和布局的变化。
It can describe not only the spatial structure change of the regional variable, but also its random change, moreover its calculation is also the foundation of many other calculation of geostatistics.
它既能描述区域化变量的空间结构性变化，又能描述其随机性变化，而且它的计算还是许多其它地质统计学计算的基础。
Variation function, which is the core and a basic tool of geostatistics, can describe not only the spatial structure change, but also the randomicity change of the regional variable.
变异函数是地质统计学的核心内容和基本工具，它既能描述区域化变量的空间结构性变化，又能描述其随机性变化。
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