空气质量对中国人口迁移的影响
Examining the role of air quality in shaping the landscape of China′s internal migration: Phase characteristics, push and pull effects
注：此图基于国家自然资源部标准地图服务系统的标准地图（审图号：GS（2019）1825号）绘制,底图无修改。
空气质量对中国人口迁移的影响 |
| 曹广忠, 刘嘉杰, 刘涛 |
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Examining the role of air quality in shaping the landscape of China′s internal migration: Phase characteristics, push and pull effects |
| CAO Guangzhong, LIU Jiajie, LIU Tao |
| 图2 全国PM2.5平均浓度的变化情况 注：此图基于国家自然资源部标准地图服务系统的标准地图（审图号：GS（2019）1825号）绘制,底图无修改。 |
| Fig. 2 Changes in the average concentration of PM2.5 at prefecture level in China |
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