Fig. 1From: Exploring the spatial-temporal distribution and evolution of population aging and social-economic indicators in ChinaSpatial distribution and variation of EPR, EDR, GRPpc, and UPR at the provincial level in China in 2005, 2010, and 2015. The studied factors are divided into five levels based on natural breaks (Jenks) in ArcGIS. Data in Hong Kong, Macau, and Taiwan are not available in this studyBack to article page