数字贸易的城市碳减排效应及创新驱动机制——基于国家电子商务示范城市的准自然实验  

The Carbon Reduction Effects of Digital Trade in Urban Areas and Its Innovation-Driven Mechanism:Difference-in-Differences Analysis Based on National E-commerce Demonstration City

作　　者：叶瑞克[1,2] 吴佩窈 YE Ruike;WU Peiyao(Zhejiang University of Technology,School of Economics,Hangzhou 310023,China;Zhejiang University of Technology,Institute for Industrial System Modernizationm,Hangzhou 310023,China)

机构地区：[1]浙江工业大学经济学院,杭州310023 [2]浙江工业大学现代化产业体系研究院,杭州310023

出　　处：《商业研究》2025年第2期72-83,共12页Commercial Research

基　　金：国家社会科学基金一般项目“我国新能源汽车产业链风险传导机理、防控机制与优链策略研究”,项目编号:24BGL108;浙江省哲学社会科学规划重点项目“我国新能源汽车产业链风险预警防控机制与优链策略研究”,项目编号:24NDJC25Z;浙江省社会科学界联合会研究课题“新能源汽车产业竞争力评价:指标体系、国别比较与政策建议”,项目编号:2023B003。

摘　　要：本文基于熊彼特创新理论分析数字贸易对传统贸易的五大创新,选取2007—2022年270个地级市的面板数据,利用双重差分方法检验数字贸易对城市碳减排效应及其创新驱动机制。研究表明:数字贸易显著促进城市碳减排;数字贸易提升了城市创新水平,并且通过创新驱动技术效应、结构效应、规模效应和集聚效应,进而降低城市碳排放水平;区域异质性分析表明,东中部地区、大型规模城市的数字贸易的碳减排效应更为显著;特征异质性分析表明,高人力资本水平、高财政支持和高城镇化水平的城市数字贸易的碳减排效应更为显著;产业异质性分析表明,非资源型、高第三产业占比的城市和千兆城市的数字贸易碳减排效应显著。This study draws on Schumpeter’s theory of innovation to examine the five key innovations introduced by digital trade into traditional trade.It employs panel data from 270 prefecture-level cities over the period 2007–2022 and utilizes the difference-in-differences method to assess the impact of digital trade on urban carbon emission reduction and the mechanisms through which innovation drives this effect.The research identifies the following key findings:Firstly,digital trade has been found to substantially promote urban carbon emission reduction.Secondly,the analysis demonstrates that digital trade enhances the innovation capacity of cities and facilitates carbon emission reduction through four primary innovation-driven mechanisms:technological effects,structural effects,scale effects,and agglomeration effects.Thirdly,regional heterogeneity analysis reveals that cities in the eastern and central regions,as well as those classified as large-scale,experience more pronounced carbon emission reduction effects from digital trade.Fourthly,heterogeneity analysis based on urban characteristics indicates that cities characterized by high levels of human capital,strong fiscal support,and high urbanization rates exhibit particularly notable carbon emission reduction effects when adopting digital trade practices.Lastly,industry heterogeneity analysis highlights that the carbon emission reduction impact of digital trade is especially significant in cities that are non-resource-dependent,have a high share of tertiary industries,and are designated as gigabit cities.

关 键 词：数字贸易 国家电子商务示范城市 碳排放 创新驱动 

分 类 号：F424[经济管理—产业经济]