行政边界扩张视角下撤县设区对工业企业空气污染排放的影响研究

Study on the Influence of the City-County Mergers on Air Pollution Emission of Industrial Enterprises from the Perspective of Administrative Boundary Expansion

作为城市空间管理的重要政策之一,近年来撤县设区显著影响城市资源重组和开发模式,其环境绩效受到了更多关注但缺乏在行政边界扩张视角下考察其对被撤并县工业企业污染排放的影响。使用2000—2013年工业企业污染数据库与工业企业数据库匹配数据,论文以撤县设区作为准自然实验,使用多期双重差分模型(DID)检验了撤县设区所带来的行政边界扩张对被撤并县工业企业二氧化硫排放的影响,还运用全过程管理框架分析了其影响机制。结果显示,行政边界扩张使得撤县设区在扩大城市规模同时有利于降低工业企业二氧化硫排放量,它主要是通过企业前端控制和末端治理来降低二氧化硫排放,过程管理效果不明显。进一步分析发现,该结果在地区经济实力、监管距离和行业性质下存在差异,政府调控能力和中心城区首位度均发挥着显著的调节作用。以上结果有助于认识通过行政边界调整、增强政府调控能力及发挥市场的要素调节潜力来实现环境改善和空间优化的双重目标。

As one of the important policies in urban space management,the city-county mergers have had significant impact on urban resource restructuring and development models in recent years.While its environmental performance has received increased attention,there lack of examination on the impact of administrative boundary expansion on pollution emissions from industrial enterprises in the merged counties.Using the matching data from the industrial enterprise pollution database and the industrial enterprise database from 2000 to 2013,this study examines the impact of the city-county mergers on sulfur dioxide emissions of industrial enterprises in the merged counties.The study employs the multi-period difference-in-differences model (DID) and analyzes the impact mechanism using whole process management framework.The findings indicate that expanding administrative boundaries allows for the consolidation of city-county mergers,resulting in the expansion of cities and reduction in sulfur dioxide emissions from industrial enterprises.This reduction is primarily achieved through implementing front-end control and end-of-pipe treatment measures in enterprises,while the impact of process management is not significant.Further analysis reveals variations in regional economic strength,regulatory distance and industry nature,with government regulation ability and the primacy of central cities playing crucial role in regulation.The above results contribute to understanding the dual goals of achieving environmental improvement and spatial optimization through administrative boundary adjustments,enhancing government regulatory capabilities and tapping into the regulatory potential of market factors.