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Secretary ›› 2023, Vol. 41 ›› Issue (1): 25-35.

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Impact of Smart City Construction on Air QualityA Quasi Natural Experiment

QI JiYI YanchunCHENG PeiGENG Yixin   

  • Online:2023-01-15 Published:2023-02-01

Abstract:

Based on the panel data of 19 prefecture level cities in China from 2008 to 2017this paper studies the impact of smart city construction on local air quality by taking the pilot construction of smart city as a quasi-natural experiment with the help of Difference-in-Difference model. The results show that the construction of smart city pilot has a significant effect on both CO2 emission reduction and SO2 emission reduction. After placebo test and a series of other robustness tests the above conclusion is still robust. Further heterogeneity analysis shows that the air quality improvement effect of pilot cities in the eastern region with relatively developed economy is better than that in the central and western regions. The policy enlightenment of the article is to promote the development of smart city construction to a higher level on the existing basisoptimize the collaborative linkage of industries among regions in the process of smart city constructionand contribute to the goal of carbon neutralization and carbon peak.

Key words:

 smart city, air quality, Difference-in-Differences, heterogeneity test