Spatio-temporal Evolution Analysis for Per Capita Net Income of Rural Residents on County Scale in Henan

With the aim of probing the laws of spatio-temporal evolution for per capita net income of rural residents in Henan Province,and based on all the county-level statistical data from 1999 to 2007,spatial autocorrelation analysis method and GIS technology which can well reflect the regional economy disparities are used in this paper.Global and local spatio-temporal variation indicates:1)spatial cluster of counties with similar value is always significant,while the global spatial autocorrelation level increases slightly by and large;2)core zone of higher rural income is distributing stably which centres on Jiaozuo,Zhengzhou and Xuchang;3)core zones of lower rural income have transferred from the middle of west Henan to the middle of east Henan since 2003;4)counties which present spatial heterogeneity scatter around the core zones of higher and lower rural income,and those have never formed conspicuous spatial cluster;5)high-high and low-low significant areas represent spatial differential obviously all the time,macroscopical spatial differentiation characteristics exhibit that it is higher in north and middle Henan while lower in south,east and west Henan.