Analysis of the Spatial Distribution Characteristics of Aging Population in Chongqing City

Based on the data from the fourth, fifth and sixth population censuses of Chongqing City, methods of spatial auto-correlation analysis and software like ArcGIS and GeoDA were adopted to analyze the spatial distribution characteristics of
aging population in Chongqing City from1990 to2010. Results showed: The absolute and relative differences of distribution of aging level in Chongqing City experienced a process from a relatively imbalanced development to a balanced development to the development of a re-widening spatial deference. Spatial aggregation was strong and the characteristic of high-low-high fluctua- tion change“” was found in its time sequence. The focus of aging has moved7,561. 642m towards the northeast in20 years. Spatial pattern witnessed dramatic changes; high-high aggregation trend takes a“ring-shaped” diffusion from the core area of Chongqing City to its periphery; low-low aggregation gradually fills the vacancy of“ring-shaped” center of high-high aggrega- tion; northeast and southeast wings shrank to the marginal counties. The core area of the City proper has transformed from a hot spot area in1990 to a cold spot area in2010; northeast and southeast wings have transformed from cold spot areas in1990 to inapparent areas; Dianjiang, Fuling, Tongnan and so on are becoming hot spot areas.