中国特大城市群PM2.5污染及健康负担的时空演变特征
巫燕园, 刘逸凡, 汤蓉, 姜玲玲, 王海鲲

Spatiotemporal evolution characteristics of PM2.5 pollution and health burden in mega⁃urban agglomerations of China
Yanyuan Wu, Yifan Liu, Rong Tang, Lingling Jiang, Haikun Wang
图2 2000-2020年四个城市群(a) PM2.5浓度分布和(b)十年际PM2.5浓度变化分布
Fig.2 (a) Distribution of PM2.5 concentration, (b) changes of PM2.5 concentration over decades in four urban agglomerations during 2000-2020