数字经济空间关联网络的碳排放效应:动态演化与作用机制  

Carbon Emission Effects of Spatially Connected Networks in the Digital Economy:Dynamic Evolution and Mechanism of Action

作　　者：徐妍 何禄瑶 XU Yan;HE Lu-yao(School of Economics and Management,Chang'an University,Xi'an 710064,China)

机构地区：[1]长安大学经济与管理学院,西安710064

出　　处：《环境科学》2024年第9期5069-5085,共17页Environmental Science

基　　金：国家自然科学基金项目(71903016);中央高校优秀青年学者项目(300102231650);陕西省社科项目(2022D008);陕西省软科学一般项目(2023-CX-RKX-121)。

摘　　要：在“双碳”目标和“东数西算”工程建设时代背景下,通过选取2011~2021年254个地级市层面数据,使用UCINET软件和实证计量模型,探究数字经济空间关联网络的时空演化特征,以及对碳减排效应和碳回弹效应的作用效果和机制.结果发现:①数字经济空间关联网络不仅呈现多元协同的“一盘棋”发展格局,还具有地理区域上的非均衡空间演化特征;②样本选择期内数字经济空间关联网络对碳减排效应具有正向促进作用,还会引致碳回弹效应,该结论通过稳健性检验后依然成立;③数字经济空间关联网络能通过推动技术进步下的能源效率效应,在减少碳排放的同时,另一方面也会引致碳回弹效应;④实证结果在地理区域、行政等级、城市环境治理目标和资源禀赋这4个维度下存在异质性表现.In the context of the“double carbon”goal and the construction of the“East Counts,West Counts”project,this study investigated the characteristics of the spatial and temporal evolution of the digital economy spatial correlation network,and the effects and mechanisms of carbon emission reduction and carbon rebound effects by selecting data at the level of 254 prefectural-level cities from 2011 to 2021 and using the UCINET software and empirical econometric modeling.The results indicated that:The spatial network of the digital economy represented the development pattern of multiple synergies and had the characteristics of non-equilibrium spatial evolution in geographic regions.Secondly,the spatial network of the digital economy in the sample selection period had a positive contribution to carbon emission reduction,and it led to the carbon rebound effect,which was still valid after the robustness test.Furthermore,the spatial correlation network of the digital economy could reduce carbon emissions by promoting the energy efficiency effect under technological progress and led to the carbon rebound effect.Finally,the empirical results were heterogeneous under the four dimensions of geographic region,administrative level,urban environmental governance objectives,and resource endowment.

关 键 词：数字经济空间关联网络 碳减排效应 碳回弹效应 基于技术进步的能源效率效应 城市环境治理目标约束 

分 类 号：X24[环境科学与工程—环境科学]