统计与决策2025，Vol.41Issue(20)：17-22,6.DOI:10.13546/j.cnki.tjyjc.2025.20.003
数字经济集聚对碳强度的影响机制、外溢效应及其衰减边界
Influence Mechanism,Spillover Effect and Attenuation Boundary of Digital Economy Agglomeration on Carbon Intensity
摘要
Abstract
Agglomeration is an inherent outcome of digital economy development.Exploring the relationship between digital economy agglomeration and carbon emission intensity holds paramount significance for achieving China's carbon peaking and car-bon neutrality goals.Based on the panel data of 280 cities in China from 2011 to 2023,this paper constructs a benchmark econo-metric model,a mechanism verification model and a spatial econometric model to study the degree of influence,mechanism of ac-tion and spatial spillover effect of digital economy agglomeration on carbon intensity,and then analyzes its spatial attenuation boundary.The research results show that there is an inverted U-shaped relationship between the agglomeration of the digital econ-omy and carbon intensity,and that industrial structure upgrading and energy utilization efficiency are important influencing mech-anisms.From the perspective of spatial spillover effects,the agglomeration of digital economy in other regions has a significant in-verted U-shaped spatial spillover effect on local carbon intensity,and this spatial spillover effect has spatial attenuation character-istics,with an attenuation boundary of 700 kilometers.Specifically,when the distance threshold is less than 300 kilometers,the"trickle-down effect"is manifested.When the distance threshold is between 300 kilometers and 700 kilometers,the"siphon ef-fect"is exhibited.When the distance threshold exceeds 700 kilometers,the spatial spillover effect is no longer significant.关键词
数字经济集聚/碳强度/空间溢出效应/空间衰减边界Key words
digital economy agglomeration/carbon intensity/spatial spillover effect/spatial attenuation boundary分类
经济学引用本文复制引用
白春雨,张明..数字经济集聚对碳强度的影响机制、外溢效应及其衰减边界[J].统计与决策,2025,41(20):17-22,6.基金项目
江苏省社会科学基金资助项目(20JD012) （20JD012）
江苏省高校哲学社会科学研究项目(二十大专项)(SJZT202319) （二十大专项）
江苏省高校哲学社会科学研究项目(2022SJYB1519) （2022SJYB1519）
