基于Voronoi图的居民点空间分布特征研究——以甘肃省为例  

Research on Voronoi Diagram to Spatial Distribution Characteristics of Settlement——A Case Study of Gansu Province

作　　者：党国峰[1] 杨玉霞[1] 张晖[2] 

机构地区：[1]西北师范大学地理与环境科学学院,甘肃兰州730070 [2]陕西师范大学旅游与环境学院,陕西西安710062

出　　处：《资源开发与市场》2010年第4期302-305,357,共5页Resource Development & Market

基　　金：国家自然科学基金项目(编号:40871052)

摘　　要：采用GIS查询统计与Voronoi图CV值相结合的分析方法,通过计算点状目标的Voronoi多边形面积的变异系数(CV值)方法来分析点状目标的空间分布特征。分析结果表明,甘肃省有9个市、县为随机分布,其余市、县为集群分布,但总体上为集群分布。最近邻指数和CV值通过级差变换后,发现其存在相关性,相关系数为负值,表明两者之间存在负相关关系。Combining GIS with CV value, according to the CV value and the most close neighbor index classified standard, the research obtained that there were nine residential areas of the random distribution in Gansu Province, other cities and county were the colony distribution, but in overall residential areas were colony distribution. The most close neighbor index and the CV value after the grading transformation discovered its existence relevance, the correlation coefficieut was a negative value, which indicated the correlation relations both of them.

关 键 词：点状目标 VORONOI图 变异系数(CV值) 极差变换 空间分布特征 

分 类 号：K901.8[历史地理—人文地理学]