Effects of the COVID-19 on Air Quality: Human Mobility, Spillover Effects, and City Connections
Effects of the COVID-19 on Air Quality: Human Mobility, Spillover Effects, and City Connections
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COVID-19 对空气质量的影响：人员流动、溢出效应和城市联系
DOI：
10.1007/s10640-020-00492-3
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发表时间：
2020-08-04
影响因子：
5.9
通讯作者：
Kong, Dongmin
中科院分区：
文献类型：
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作者：
Liu, Shasha;Kong, Gaowen;Kong, Dongmin
我们在中国的背景下量化了冠状病毒疾病2019年(新冠肺炎)对空气质量的因果影响。使用不同城市的封锁作为外生冲击，我们的差异估计显示，封锁政策显著减少了空气污染，平均减少了12%。基于第一个封锁城市武汉，我们提出了三个潜在的机制来推动我们的发现：预期效应、溢出效应和一个城市与武汉的联系水平。我们的发现在人口更愿意自我孤立或更容易焦虑的城市，或者政府面临的刺激经济增长的压力较小的城市中更为明显。总体而言，这项研究通过评估新冠肺炎疫情对空气质量的意外后果，为文献做出了贡献，并为政策制定者提供了及时的政策含义。
We quantify the causal effects of the coronavirus disease 2019 (COVID-19) on air quality in the context of China. Using the lockdowns in different cities as exogenous shocks, our difference-in-differences estimations show that lockdown policies significantly reduced air pollution by 12% on average. Based on the first lockdown city, Wuhan, we present three underlying mechanisms driving our findings: anticipatory effects, spillover effects, and a city’s level of connection with Wuhan. Our findings are more pronounced in cities whose population was more willing to self-isolate or more susceptible to anxiety, or whose government faces less pressure to stimulate economic growth. Overall, this study contributes to the literature by evaluating the unintended consequences of the COVID-19 outbreak for air quality, and provides timely policy implications for policymakers.