数字经济对城市碳排放强度的影响及其空间效应  

Impact of Digital Economy on Urban Carbon Intensity and Its Spatial Effect

作　　者：孙聪丽 宋迎昌[1,2] SUN Congli;SONG Yingchang(Faculty of Applied Economics,University of Chinese Academy of Social Sciences,Beijing 102488;Research Institute for Eco-civilization,Chinese Academy of Social Sciences,Beijing 100710)

机构地区：[1]中国社会科学院大学应用经济学院,北京102488 [2]中国社会科学院生态文明研究所,北京100710

出　　处：《江汉大学学报(社会科学版)》2025年第2期92-105,共14页Journal of Jianghan University(Social Science Edition)

基　　金：中国社会科学院哲学社会科学创新工程项目“基于新工业/新城市革命的生态文明空间发展研究”(2022—2026年)(YCXGC2201);中国社会科学院大学“研创计划”科学研究项目“转轨别离化石燃料背景下零碳能源创新体系研究”(2024-KY-090)。

摘　　要：从基础设施改善、能源效率提高、资源配置优化、科学技术创新和生产消费转变等方面梳理数字经济影响城市碳排放强度的作用机制,并分析其门槛效应和空间效应。基于中国城市面板数据,利用固定效应模型实证探讨数字经济如何影响碳排放强度,并通过门槛模型、分组回归和空间杜宾模型来考察这些影响的异质特征和空间溢出效应。结果表明:(1)城市数字经济发展对碳排放强度在整体上具有显著抑制效应;(2)随着城市经济发展,数字经济对碳排放强度的作用由促进转为抑制;(3)对于北方及非资源型城市来说,数字经济对碳排放强度存在更明显的负向影响;(4)我国城市碳排放强度和数字经济均存在正向空间自相关性;(5)城市数字经济发展对邻近城市碳排放强度具有负向空间溢出作用。The work mechanism of digital economy influencing urban carbon intensity is studied from the following aspects:improvement of infrastructure,energy efficiency,optimization of resource allocation,sci-tech innovation,and the transformation of production and consumption.Its threshold effect and spatial effect are also analyzed.Based on the panel data of Chinese cities,how the digital economy affects carbon emission intensity is empirically explored using the fixed effects model.The heterogeneous characteristics and spatial spillover effects of these influences are investigated through the threshold model,group regression and spatial Durbin model.The results are as follows:(1)The development of urban digital economy has a significant inhibitory effect on carbon emission intensity as a whole;(2)With the development of urban economy,the role of the digital economy in carbon intensity has shifted from promoting to suppressing;(3)For northern and non-resource-based cities,digital economy has a more obvious negative impact on carbon intensity;(4)There is a positive spatial autocorrelation between the carbon intensity of Chinese cities and digital economy;(5)The development of urban digital economy has a negative spatial spillover effect on the carbon intensity of neighboring cities.

关 键 词：数字经济 碳排放强度 固定效应模型 空间效应 

分 类 号：F061.5[经济管理—政治经济学]