基于GIS的重庆市经济空间差异的ESDA分析

An Analysis of Regional Economic Disparities of Chongqing Based on ESDA and GIS

基于GIS技术,运用探索性空间数据分析(ESDA)全局和局部自相关分析方法,以重庆市1997-2007年区县人均GDP数据为基础,对重庆市区县经济总体和局部空间差异的变化趋势、特征以及成因进行了分析.结果表明:重庆市区县经济空间差异无论是总体上还是局部上都呈缩小的趋势,说明重庆市的经济协调发展出现区域空间分异现象.

Based on GIS technology,this paper firstly explores the feasibility of exploratory spatial data analysis（ESDA） in analyzing regional economic disparities.Unlike traditional statistical methods,such as coefficients of variation,ESDA can incorporate spatial effects into the analysis of regional disparities,identifying global and local disparities at the regional scale and visualizing the spatial distribution and patterns through Moran scatter plots or maps By means of global and local spatial autocorrelation analyses this paper then investigates the spatial dynamics of regional disparities at the county level in Chongqing by analyzing per capita GDP data,1997-2007.Empirical results show that the over-all county-level spatial disparities of regional economy in Chongqing have been greatly decreased over time and the regions and their neighbors tend to have the similar trends towards shrinking the disparities of regional economy,but the reduction of county-level regional disparities in Chongqing does not imply that the regional development is in a coordinated way,instead,it indicates a spatial ramification of the whole regional economy into two different clubs.