Abstract: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.