ISSN 2096-2533

CN 42-1881/F



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发布时间:2020-09-29作者:吴力波 任飞州 徐少丹浏览次数:126

Impact of First-level Response to COVID-19 on the

Reduction of Urban Air Pollutants in China

Wu Libo, Ren Feizhou and Xu Shaodan



Abstract: COVID-19 profoundly changed the firm production and residents' daily life in China. A comprehensive assessment for COVID-19's impact is essential for welfare loss estimation. Under the epidemic situation, all regions in China adopted the first-level response to major public health emergency, aiming at limiting residents' travel and public gathering, which might reduce pollutions. Using prefecture-level daily air pollution data and Regression Discontinuity Design, we investigate the impact of control policy on city air pollution. It is found that the average Air Quality Index decreases by 36% under the First-level Response to Major Public Health Emergency. Furthermore, there exist city heterogeneity in the treatment effect. Cities with more process type production firms were less affected by the policy, while those with higher road intensity decreases their air pollution by a larger proportion. The conclusions suggest the necessity on considering city heterogeneity in future environmental policy making. In the long run, the government should focus on improving advanced emission reduction technologies in process manufacturing, and promoting new energy automobile and public transit in the transportation sector.

Keywords: COVID-19; Regression Discontinuity Design; Air Pollution; Heterogeneous Local Average Treatment Effect




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