长江中游城市群数字金融发展对碳效率的门槛异质影响  

The Heterogeneous Impact of Digital Finance Development on Carbon Efficiency of City Clusters along the Middle Reaches of the Yangtze River

作　　者：林颖 高媛 方忠[1] Lin Ying;Gao Yuan;Fang Zhong

机构地区：[1]福建师范大学经济学院

出　　处：《经济研究参考》2025年第4期65-87,共23页Review of Economic Research

基　　金：福建省社科基金项目青年项目“乡村振兴视域下福建文旅产业融合的内在逻辑和实现路径研究”(No.FJ2022C059)。

摘　　要：本文在运用超效率SBM模型测度2011~2021年长江中游城市群28个城市碳效率基础上,采用面板回归分析及面板门槛效应模型等统计方法,深入探讨了数字金融发展对提高城市碳效率的影响及其门槛特征。通过实证研究,揭示了数字金融在促进低碳经济转型中的重要作用。结果表明,数字金融对碳效率的影响具有倒“U”型的非线性特征;长江中游城市群中各子城市群数字金融对碳效率的关系曲线的拐点位置不同;在数字金融三个子维度对碳效率的影响中,覆盖广度的拐点位置最高,说明其对碳效率的促进作用最为持久。数字金融发展对碳效率的影响存在基于产业结构高级化与绿色创新技术能力的门槛效应。基于实证分析结果,本文提出适宜长江中游城市群可持续发展的碳减排政策建议,为数字金融提高碳减排效率助力可持续发展提供理论依据和实践经验。On the basis of using the super efficiency SBM model to measure the carbon efficiency of 28 cities along the middle reaches of the Yangtze River in 2011-2021,this paper uses statistical methods such as panel regression analysis and panel threshold effect model to deeply explore the impact of digital finance development on improving urban carbon efficiency and its threshold characteristics.Through empirical research,the important role of digital finance in promoting low-carbon economic transformation has been revealed.The results indicate that the impact of digital finance on carbon efficiency exhibits an inverted U-shaped nonlinear characteristic.The inflection points of the relationship curve between digital finance and carbon efficiency in each sub-city cluster along the middle reaches of the Yangtze River are different.Among the three sub-dimensions of digital finance that affect carbon efficiency,the inflection point of coverage breadth is the highest,indicating that its promotion effect on carbon efficiency is the most lasting.The impact of digital finance development on carbon efficiency has a threshold effect based on the advanced industrial structure and green innovation technology capabilities.Based on empirical analysis results,formulate carbon reduction policies suitable for the sustainable development of city clusters along the Yangtze River,providing theoretical basis and practical experience for digital finance to improve carbon reduction efficiency and promote sustainable development.

关 键 词：数字金融 碳效率 门槛效应 异质性影响 

分 类 号：F832[经济管理—金融学] X321[环境科学与工程—环境工程]