提出了水土保持区划指标体系中各要素主导因素的提取方法，把统计分析和空间叠置分析相结合的区划方法应用到了水土保持区划中；
The extraction methods of the dominant components from every element are presented, and regionalization methods combining statistical analysis and spatial overlay analysis are used.
实现了图形对象的拓扑分析、叠置分析和缓冲区分析等空间分析功能。
The spatial analysis, including topological analysis, overlay analysis, buffer analysis and so on, is achieved.
叠置分析是GIS进行空间分析时常用的一种空间操作。
Overlap analysis is a widely used spatial operation for the needs of spatial analysis in GIS.
利用美国俄亥俄大学等研制的地图分析软件包(map)能够比较容易地实现地图叠置分析，在城市土地利用空间结构演化等研究领域具有实用价值。
It is simple to realize the map overlay analysis utilizing the map AnalysisPackage (map) which was researched and produced by Ohio State University of u, s. A. and others.
利用美国俄亥俄大学等研制的地图分析软件包(map)能够比较容易地实现地图叠置分析，在城市土地利用空间结构演化等研究领域具有实用价值。
It is simple to realize the map overlay analysis utilizing the map AnalysisPackage (map) which was researched and produced by Ohio State University of u, s. A. and others.
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