城市规模分布与空气质量的关系——基于LandScan数据的跨国研究
王妤, 孙斌栋, 李琬

Relationship between city size distribution and air quality: A cross-country study based on LandScan data
WANG Yu, SUN Bindong, LI Wan
图6 2000—2015年主要国家PM2.5浓度时间变化
Fig. 6 Temporal evolution of PM2.5 in major countries from 2000 to 2015