滇中城市圈县域人口增长率的空间格局演变特征分析

Analysis of Spatial Evolvement of Population Growth Index in the Middle Yunnan Urban Agglomerations

选取滇中城市圈42个县市区人口数据作为研究对象,采用人口平均增长指数和空间自相关分析方法,在ArgGIS和GeoDA软件支持下,对2000～2008年滇中城市圈人口增长率的空间格局演变特征分析。研究结果表明:总体上人口增长率存在空间集聚性,人口增长空间正相关多于负相关,局部空间集聚特征明显,空间结构主要表现为"中心—外围"结构。演变过程体现了人口向经济发展水平较高的区域集聚,同时也应该注意到,在经济相对不发达的县域,人口有反向集聚趋势。

With data collected in 42 counties in the middle yunnan urban agglomerations,by using average population growth index,spatial auto-correlation analysis,With the aid of ArcGIS 9.2 and GeoDA 9.5,this paper based on 2000-2008 population growth rate of the middle of yunnan’s city circle to explore the spatial distribution pattern.The results show that ： there is spatial cluster of population growth rate,positively correlated couties are more than negatively.local spatial concentrations are obvious,spatial pattern shows structure of ＂center-periphery＂.the evolutionary process shows that population tends to a higher level of economic development of regional cluster,And,population is clustering in Counties where the economy is relatively underdeveloped,The cluster of Population become to the reverse.