The Spatial Analysis on Towns’Economic Differences in Zhengzhou Metropolitan Area

According related region economic difference theories and by means of global and local spatial autocorrelation analysis of ESDA,the spatial dynamics of region disparities at town level in western region in China were analyzed through the town economic comprehensive index from 2006 to2010 under the software of Arc GIS and Geo-DA.Analysis results show that the overall town-level spatial disparities of regional economy in Zhengzhou metropolitan had an increased trend,local economic spatial disparities in some area are still exist.Similar level of economic development of regional cluster appeared in the western region,the number of HH area and LL area is added to 28 and 29,and the LH area and HL area reduced to 14 and 9.The economic coordination development has not yet formed from the perspective of coordination of the whole and the local at town level.Based on the analysis of global and local economic spatial disparities,this paper gives a reason explanation from the geographic conditions,macroeconomic policies,economic and social condition.It was proved that ESDA-GIS spatial analysis method makes spatial heterogeneity of economic development more distinct and its visualization is thus strengthened.