Has urbanization accelerated PM2.5 emissions? An empirical analysis with cross-country data
Has urbanization accelerated PM2.5 emissions? An empirical analysis with cross-country data
复制标题
城市化加速了PM2.5排放吗？
DOI：
10.1016/j.chieco.2019.101381
复制
发表时间：
2020-02-01
影响因子：
6.8
通讯作者：
Chen, Zhongfei
中科院分区：
文献类型：
--
作者：
Dong, Qichen;Lin, Yongyi;Chen, Zhongfei
城市化作为衡量经济发展的重要指标，对PM2.5水平有显著影响。本研究利用来自126个国家（地区）1990-2016年的面板数据，调查了城市化水平与PM2.5密度之间的关系。采用修正的人口、富裕和技术随机影响回归模型作为实证策略。结果表明：城市化与PM2.5密度呈倒U型关系；城市群效应和技术进步效应降低了城市化后期PM2.5浓度。这项研究可以帮助决策者在快速城市化的背景下设计出与PM2.5衰减相关的适当措施。
As a prominent indicator of economic development, urbanization can exert a significant impact on the PM2.5 level. Using panel data from 126 countries (areas) over the period 1990-2016, this study investigates the relationship between urbanization level and PM2.5 density. A modified stochastic impacts by regression on population, affluence, and technology model is applied as the empirical strategy. Results show that the relationship between urbanization and PM2.5 density has an inverted U shape. The effects of urban agglomeration and technological progress reduce the density of PM2.5 in the late stage of urbanization. This study can help policymakers design appropriate measures relevant to PM2.5 attenuation in the context of breakneck urbanization.