Abstract
As a major institutional innovation in the field of environmental protection system, the supervision and law enforcement of environmental protection system in China has been transformed from the jurisdictional management system to a vertical management system, and its effect on improving air quality is a hot issue to be tested urgently. This paper uses regression discontinuity design model (RDD) to test the daily air quality of 321 prefecture-level cities from September 2016 to December 2019. The results show that the vertical management reform of environmental protection system can significantly improve the air quality, and has a significant long-term inhibitory and sustainable effect on air pollution. Furthermore, a series of robustness tests also further prove the reliability of the results. As a conclusion, this paper provides a basis for decision-making in deepening the vertical management reform of environmental protection system.
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