Promoting synergistic pollution reduction and carbon reduction is an inevitable requirement for deepening the battle against pollution and achieving carbon peak.This study explores the Chinese government's"Action Plan for Prevention and Control of Air Pollution"and the"Three-Year Action Plan for Winning the Blue-Sky Defense War"as a coherent policy.It uses a progressive difference-in-differences method to explore the policy effect on the"coordinated control of air pollutants and greenhouse gases"proposed in 2015 and 2018.Research shows that this policy has significantly improved the synergy degree of"SO2-CO2"intensity and the degree of the synergy of"PM-CO2"emissions(intensity)but has no significant impact on that of"SO2-CO2"emissions.Improving the level of government supervision,weakening the relationship between government and enterprises,and enhancing corporate green innovation are shown to be the main mechanisms by which the policy is transmitted.Heterogeneity analysis shows that policy effects are significantly different in cities with different levels of energy consumption.Compared with highly polluting listed companies,high energy-consuming small and medium-sized enterprises still have substantial room for improvement in collaborative emission reduction measures for air pollutants and CO2.The findings provide inspiration for China to optimize related policies to"continue to fight in depth to defend the blue sky".
关键词
大气十条/蓝天三年/减污降碳协同度/渐进双重差分
Key words
action plan for prevention and control of air pollution/three-year action plan for winning the blue-sky defense war/coordinated control of air pollutants and greenhouse gases/synergy degree of pollution reduction and carbon reduction/progressive difference
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