绿色发展目标下智慧城市建设对碳排放效率的影响研究

Research on the Impact of Smart City Construction on Carbon Emission Efficiency Under the Green Development Goals

在全球气候变化的背景下,绿色发展成为智慧城市建设的重要目标,助力城市降碳增效。文章从理论上分析了智慧城市对碳排放效率的作用机理和内在机制,并将中国智慧城市试点作为准自然实验,基于2007—2019年280个地级市面板数据,实证检验智慧城市对碳排放效率的影响。研究表明:(1)智慧城市显著提升了试点城市的碳排放效率,并具有显著的空间溢出效应,可以提升周边城市的碳排放效率;(2)智慧城市主要通过增强绿色技术创新、促进数字产业发展以及优化资源配置三个方面提升碳排放效率;(3)智慧城市对碳排放效率的促进作用在数字基础设施水平完善、城市规模大、碳排放水平高的城市中更为显著。本文研究为进一步推进新型绿色智慧城市建设提供重要参考。

In the context of global climate change,green development has become an important goal in the construction of smart cities,helping cities to reduce carbon and increase efficiency.The paper theoretically analyzed the mechanism of smart cities on carbon emission efficiency,and then taking the smart city pilot policy as a quasi-natural experiment,we employed the DID model to empirically test the impact of smart cities on carbon emission efficiency based on the panel data of 280 prefecture-level cities from 2007 to 2019.The results are as follows.Firstly,the smart city construction has significantly improved carbon emission efficiency and has a significant spillover effect.Secondly,the smart cities contribute to improvement of carbon emission efficiency by advancing technological innovation,optimizing industrial structure,and enhancing resource allocation.Finally,the heterogeneity analysis demonstrated that the construction of smart cities has a significant promoting effect on cities with high-level digital infrastructure,large urban scale and high carbon emissions.These findings provide an important reference for further promoting the construction of new green smart cities.