Study on the Relationship Between Population and Economic Spatial Distribution in the Red-Triangle Economic Zone

The changes in the distribution of population and economics are very important in the regional studies.Based on the population and GDP data of Red-Triangle Economic Zone in 1998-2008 and the methods of regional center and geographic concentration index,the coupling characteristics of the population and the economy of Red-Triangle Economic Zone is analyzed.The economic zone has been divided into three types by coupling index.The following conclusions are obtaied:(1) the economic center is locateds in the west direction of the geometric center,and the population center is located in the SSW direction of the geometric center of Red-Triangle Economic Zone;(2) the degree of geographic concentration of population and economics in the west is higher than in the east;(3) the geographic concentration index is highly related between population and economics;(4) according to coupling index,the Red-Triangle Economic Zone can be divided into three types,the advance-economic type,the coordinate development type and the lag-economic type.