Spatio-temporal evolution and the influencing factors of PM2.5 in China between 2000 and 2015

Spatio-temporal evolution and the influencing factors of PM2.5 in China between 2000 and 2015

ZHOU Liang;ZHOU Chenghu;YANG Fan;CHE Lei;WANG Bo;SUN Dongqi

【期刊名称】《地理学报（英文版）》 【年(卷),期】2019(029)002

【摘要】High concentrations of PM2.5 are universally considered as a main cause for haze formation.Therefore,it is important to identify the spatial heterogeneity and influencing factors of PM2.5 concentrations for regional air quality control and management.In this study,PM2.5 data from 2000 to 2015 was determined from an inversion of NASA atmospheric remote sensing images.Using geo-statistics,geographic detectors,and

geo-spatial

analysis

methods,the

spatio-temporal

evolution patterns and driving factors of PM2.5 concentration in China were evaluated.The main results are as follows.(1) In general,the average concentration of PM2.5 in China increased quickly and reached its peak value in 2006;subsequently,concentrations remained between 21.84 and 35.08 μg/m3.(2) PM2.5 is strikingly heterogeneous in China,with higher concentrations in the north and east than in the south and west.In particular,areas with relatively high PM2.5 concentrations are primarily in four regions,the Huang-Huai-Hai Plain,Lower Yangtze River Delta Plain,Sichuan Basin,and Taklimakan Desert.Among them,Beijing-Tianjin-Hebei Region has the highest concentration of PM2.5.(3) The center of