撤县设区、交通碳减排与城市绿色治理OA

Against the backdrop of intensifying global climate change challenges and the guidance of China's"carbon peaking and carbon neutrality"strategic goals,the green and low-carbon transformation of transportation plays a crucial role in urban green governance and the achievement of national emission reduction targets.Based on the county-level panel data in China from 2011 to 2023,a difference-in-differences model was constructed to explore the impact of the county-to-district conversion policy on transportation carbon emission reduction and its mechanism,and a heterogeneity analysis was conducted from the aspects of geographical location,national-level urban agglomerations,and environmental regulations.The results show that:① The county-to-district conversion achieves the spatial unification of governance power and significantly promotes transportation carbon emission reduction,with a more prominent role in the eastern region,non-national-level urban agglomerations,and key environmental protection cities.② Mechanism analysis finds that the county-to-district conversion can reduce transportation carbon emissions by improving traffic accessibility,promoting green technological innovation,and driving industrial structure upgrading.③ The county-to-district conversion also exhibits a significant positive spatial spillover effect on transportation carbon emissions,showing the characteristic of"local emission reduction and neighboring emission increase".