Research of Spatial Differences of County Economy in Anhui Based on Geostatistical Analysis

By selecting the per capita GDP of every county,this article uses the methods of exploratory spatial data analysis(ESDA),Kriging spatial interpolation,semivariogram function,and the software of ArcGIS9.3 and GeoDA to study the county economy of Anhui province in 2001,2005 and 2010.The results show that: The county economy presents a weak positive spatial autocorrelation from 2002 to 2010,it has a growing tendency from east to west,and first growing then decreasing from north to south.Through the analysis of local spatial autocorrelation,counties in Wanjiang city belts are almost in the HH district,counties in the northwest are mainly in the LL district,the LH and HL districts distribute in the middle region.The center of county economy is Wanjiang city belts,the northwest gradually become the low-lying land of county economy.The analysis of local G index shows that the cold-spot areas are mainly in the northwest,the hot-spot areas are mainly located in the central and east of Anhui.Through the analysis of semivariogram function,it found that the regional center area has a growing effect on the development of county economy.Generally speaking,the development differences of county economy has increased,regional resources endowments and location,policies,the development of central cities are the main reasons that cause the spatial differences.