[Spatio-temporal Variation of PM Related Relationships in China from the Perspective of Air Pollution Regional Linkage Control and Prevention].

Identification of spatio-temporal variation of PM related relationships under joint management zones is of great significance for scientifically conducting joint control of air pollution in China. Based on the PM concentration data of 334 prefecture-level cities in China from 2000 to 2016, from the perspective of air pollution regional linkage control and prevention, this paper systematically analyzes the spatio-temporal variation of PM related relationships in China using a spatial unit aggregation strategy and geographically and temporally weighted regression. The results show that:① With PM as the primary pollutant, ten air pollution joint management areas are obtained by considering the degree of pollution, geographical location, meteorology, topography, and economy.