Firstly spatial elements were taken as the minimal units and organized with a multi-scale index to describe the changes of quantity or property of elements brought with scale changes.
其中空间要素层次的表达以空间要素为最小研究单元，通过建立多尺度索引来描述空间要素因尺度改变而引起的数量或性质变化；
Firstly spatial elements were taken as the minimal units and organized with a multi-scale index to describe the changes of quantity or property of elements brought with scale changes.
其中空间要素层次的表达以空间要素为最小研究单元，通过建立多尺度索引来描述空间要素因尺度改变而引起的数量或性质变化；
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