期刊
EMERGING MARKETS FINANCE AND TRADE
卷 56, 期 10, 页码 2422-2442出版社
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.1080/1540496X.2020.1790353
关键词
COVID-19; air quality; difference-in-differences
资金
- Science-Technology innovation Platform and Talents Program of Hunan Province [2019TP1053]
- National Social Science Fund of China [18BJL041]
- Hunan Natural Science Foundation [2019JJ40039]
- National Natural Science Foundation of China [71703120, 71603079, 71804044, 71974054, 71773028]
To test the impact of the COVID-19 pandemic on air quality, this article matches the city-level real-time air quality monitoring data with the big data on population migration provided by Baidu. The article uses urban samples from the same data sample of the Chinese lunar calendar in 2019 to construct the counterfactual status of the COVID-19 pandemic. Then, the difference-in-differences (DID) model is employed to estimate the impact of the COVID-19 pandemic on air quality. It is found that the COVID-19 pandemic caused PM2.5 and AQI to decrease by about 7 mu g/m(3) and 5-points, respectively.
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