On Spatial Coupling Distribution between Population and Economic in the Three Gorges Reservoir Area of Chongqing

Based on the population and GDP data of 22counties of the Three Gorges Reservoir in Chongqing region in 1997-2011,this paper computed and analyzed the geographic concentration of population and economic,their coupling indexes,and with the support of Geoda software,the global and local spatial autocorrelation analysis of coupling indexes of population and economic was carried out among 22counties.The results showed that:1)the distribution of population and economic are disequilibrium,namely,that in southwest is higher than that in northeast;2)according to the coupling indexes,among 22counties of the Three Gorges Reservoir in Chongqing region,there are three types in the relationship between the population and economic development in this region,namely,population concentration advanced of economic concentration,population concentration harmonized with economic concentration,population concentration lagged behind of economic concentration;3)the global autocorrelation analysis demonstrated that spatial coupling between population and economic was highly agglomerated but showed a downtrend;4)local spatial autocorrelation analysis showed that there was a high degree of local agglomeration,especially at main urban zone of Chongqing city and the northeast study area.The possible reason is that main urban zone of Chongqing city enjoys good geographical location and convenient transportation,thus possessing high level of economic development and high degree of population concentration;on the contrary,its poor geographical environment,inconvenient transportation and single industrial structure at northeast study area making low level of economic development and population concentration.In order to bring down the uneven degree of the geographic concentration of population and economic in Three Gorges Reservoir in Chongqing region,advice to adjust industrial policy toward the northeast study area to promote the local economic development and the population of backflow;besides,the northeast study area should develop competitive industries with the help of own advantage.At the same time,the government can improve traffic condition between the main urban zone of Chongqing city and the northeast study area.