数字经济发展对碳排放的影响——基于中介效应与门槛效应的检验  

The Impact of Digital Economy Development on Carbon Emission:Based on the Test of Intermediary Effect and Threshold Effect

作　　者：孔令英[1] 董依婷 赵贤 KONG Liying;DONG Yiting;ZHAO Xian

机构地区：[1]石河子大学经济与管理学院,新疆石河子832000

出　　处：《城市发展研究》2022年第9期42-49,55,共9页Urban Development Studies

基　　金：国家社科基金项目“乡村治理现代化视域下新疆精准扶贫的长效机制研究”(20BJY172);国家社会科学基金项目“南疆民族地区农村产业融合多维效应与发展研究”(21XMZ062)。

摘　　要：新发展格局下,数字经济已成为推动经济绿色发展和实现“双碳”目标的新引擎。基于2011-2019年285个地级及以上城市面板数据对数字经济减少碳排放进行了实证检验。研究结果表明:数字经济能够显著抑制城市碳排放,在经过一系列稳健性检验后该结论仍然成立;中介机制检验发现,提升城市生产效率和技术创新水平是数字经济显著抑制城市碳排放的两条基本路径;数字经济对城市碳排放的抑制作用还受市场化程度与城镇化水平的影响,表现出门槛效应,分别呈现出“倒U型”、“倒N型”趋势;数字经济对碳排放的影响在不同区域、城市群及非城市群地区具有异质性。Under the new development pattern,the digital economy has become a new engine to promote the green development of the economy and achieve the dual carbon goal.This paper empirically tests the reduction of carbon emissions by the digital economy based on balanced panel data of 285 prefecture-level and above cities from 2011-2019.The findings show that:the digital economy can significantly suppress urban carbon emissions,and this conclusion still holds after a series of robustness tests;the intermediary mechanism test finds that improving urban production efficiency and technological innovation levels are the two basic paths through which the digital economy significantly suppresses urban carbon emissions;The inhibitory effect of the digital economy on urban carbon emissions is also influenced by the degree of marketization and urbanization,showing a threshold effect and an inverted " U" and inverted " N" trend,respectively;the impact of the digital economy on carbon emissions is heterogeneous across regions,urban agglomerations and non-urban areas.The impact of digital economy on carbon emissions is heterogeneous across regions,urban agglomerations and non-urban areas.

关 键 词：数字经济 碳排放 中介效应 门槛效应 

分 类 号：F49[经济管理—产业经济] X321[环境科学与工程—环境工程]