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智慧城市建设促进了节能减排吗?——基于长三角城市群141个区县的经验分析 被引量:7

Does Smart City Construction Promote Energy Conservation and Emission Reduction?An Empirical Analysis Based on 141 Districts in the Yangtze River Delta Urban Agglomeration
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摘要 本文基于2012年智慧城市试点这一准自然实验,采用2007一2019年长三角城市群141个区县的面板数据,运用空间面板杜宾双重差分模型考察了智慧城市建设对能源消费和环境污染的影响及其影响机制。研究发现:(1)智慧城市建设显著促进了节能减排。(2)智慧城市建设的节能减排效应来源于技术创新、产业结构升级、消费方式革新、智慧交通转型四种潜在渠道,但四种潜在机制的贡献存在差异。(3)邻近地区的智慧城市建设对本地的节能减排具有积极影响,但这种积极影响随空间距离的增加而呈现递减特征。(4)邻近地区和本地智慧城市建设的节能减排效应均随时间不断增大,且智慧城市建设的节能边际效应大于其减排边际效应。(5)智慧城市试点政策在高信息基础设施和高人力资本地区所产生的节能减排效果更加明显。 This paper is based on a quasi-natural experiment of the smart city pilot in 2012 and uses panel data from 141 districts and counties in the Yangtze River Delta Urban Agglomeration from 2007 to 2019.It adopts a spatial panel Dubin difference-in-differences model to examine the impact of smart city construction on energy consumption and environmental pollution,and verifies the mechanism whereby smart city construction impacts energy conservation and emission reduction.The empirical results are as fllows.(1)Smart city construction significantly promotes energy conservation and emission reduction;the energy conservation effect is greater than the emission reduction effect;and energy consumption plays an important role in the emission reduction effect of smart city construction.(2)The energy conservation and emission reduction effects of a smart city have four underlying mechanisms:technological innovation,industrial structure upgrading,consumption-mode innovation,and smart transportation transformation.However,these four potential mechanisms have different levels of contributions.(3)Smart city construction has a positive impact on local energy conservation and emission reduction,but the magnitude of this impact diminishes with increasing spatial distance.(4)The energy conservation and emission reduction effects of smart city construction on neighboring areas increase over time,and the marginal effect of energy conservation is significantly greater than the marginal effect of emission reduction on neighboring areas.(5)Smart city pilot policies have greater energy conservation and emission reduction effects in areas with strong information infrastructure and high levels of human capital than in areas with weak information infrastructure and low levels of human capital.The key contributions of this paper are as follows.(1)Smart city,energy consumption,and environmental pollution are incorporated into a single analytical framework,and the important role of energy consumption in the emission reduction effect of smart cit
作者 张可 ZHANG Ke(Glorious Sun School of Business and Management,Donghua University)
出处 《金融研究》 CSSCI 北大核心 2023年第7期134-153,共20页 Journal of Financial Research
基金 国家社科基金一般项目(21BJL128)的资助。
关键词 智慧城市 节能减排 空间DID 空间相关 Smart City Energy Conservation and Emission Reduction Spatial DID Spatial Correlation
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