四川51个民族县域经济空间差异的ESDA-GIS分析

ESDA-GIS Analysis of Economic Spatial Differences in 51 Ethnic Counties of Sichuan Province

为探究四川民族地区经济空间差异,以四川省51个民族县域为研究区,选取13项指标,采用因子分析法提取4个主因子,加权求和得到各县域经济发展综合指数。在此基础上,以探索性空间数据分析(ESDA)为重心,结合GeoDa和ArcGIS空间数据分析软件,分析研究区各县域经济发展水平在空间上的分布特征及其差异性。结果表明:(1)研究区经济发展水平总体不高;(2)研究区县域经济发展存在明显的空间集聚性,“高-高”集聚区位于四川盆地西部外缘以及安宁河流域,“低-低”集聚区位于川西北以及小凉山地区;(3)经济热区位于理县和小金县周围,经济盲区位于川西北。

To explore the economic saptial differences of ethnic areas in Sichuan province,this paper takes 51 ethnic counties as the research area,selects 13 indicators,extracts 4 main factors by factor analysis method,and obtains the comprehensive index of economic development in each county by weighted summation.On this basis,the spatial distribution characteristics and differences of economic development level of each county in the study area are analyzed by focusing on exploratory spatial data analysis(ESDA)and combining GeoDa and ArcGIS spatial data analysis softwares.The results show that:(1)the economic development level of the study area is not high as a whole;(2)there is an obvious spatial agglomeration in the county economic development,i.e.,the“high-high”agglomeration area is located in the western margin of Sichuan Basin and Anning River Basin while the“low-low”agglomeration area is located in northwestern Sichuan and Xiaoliangshan areas;(3)the economic hot zone is located around Lixian county and Xiaojin county while the economic blind zone is located in the northwest part of Sichuan.