摘要
交通基础设施上市公司碳排放强度的同群现象会对企业的绿色低碳转型造成影响。本文采用普通最小二乘法(OLS)回归模型,以2012—2021年中国A股交通基础设施上市企业数据为基础,分析了我国交通基础设施行业碳排放强度同群效应,并对造成企业碳排放强度同群效应的因素进行研究。研究表明:交通基础设施同群企业间的碳排放强度同群效应在1%水平上显著为正。焦点企业与同群企业之间的地理距离会弱化交通基础设施企业碳排放强度的同群效应。环境规制和行业竞争强度作为调节变量会强化企业碳排放强度的同群效应,且环境规制对其影响更为显著。本文在丰富交通基础设施行业减污降碳驱动因素研究的同时,也为达成我国碳达峰碳中和战略目标提供了有益启示。
Low-carbon development serves as a fundamental prerequisite for sustainable development and a vital measure in addressing the global warming issue.Currently,road transport stands as the dominant mode of transportation with the largest carbon footprint in China.Facing the new normal of economic development,transport infrastructure enterprises must embark on a low-carbon transformation.The carbon emission intensity of these enterprises is intricately linked to their low-carbon behavioral decisions.The decision to mitigate pollution and reduce carbon emissions constitutes a costly and risky investment endeavor for transport infrastructure enterprises,often requiring non-independent decision-making.The coherence in carbon emission intensity among listed transport infrastructure companies bears implications on the green and low-carbon transformation of these enterprises.This paper employs the OLS regression model,utilizing data from China's A-share transport infrastructure listed companies spanning 2012 to 2022.It constructs two primary models:one for testing the existence of cohort effects within transport infrastructure enterprises,and another for examining the moderating effects of these cohort effects.The analysis delves into the cohort effect of carbon emission intensity within China's transport infrastructure industry and its underlying influencing factors,while also investigating the contributors to the cohort effect on enterprises'carbon emission intensity.Additionally,the study examines the factors that give rise to the cohort effect in enterprises'carbon emission intensity.Key findings reveal:①A significantly positive cohort effect is observed among transport infrastructure cohort enterprises at the 1%level,regarding carbon emission intensity.②The geographical distance between the focal enterprise and cohort enterprises diminishes the cohort effect on carbon emission intensity within transport infrastructure enterprises.③Both environmental regulation and industry competition intensity,as moderating variables,amplify the cohort effect on enterprises'carbon emission intensity,with environmental regulation exerting a more pronounced influence.Finally,based on the findings of this paper,the following insights emerge:①Transportation infrastructure enterprises are effectively motivated to enhance their green and low-carbon performance through the cohort effect of carbon emission intensity,thereby guiding the industry towards high-quality,efficient green transformation and advancing China's carbon peaking and neutrality goals.②Environmental regulation can serve as a catalyst for promoting the green transformation of transport infrastructure enterprises.The government can strengthen environmental regulations for enterprises,harnessing the cohort effect to encourage inter-enterprise collaboration,thereby reducing carbon emissions and facilitating low-carbon transformation.③When crafting low-carbon policies,the government can capitalize on the cohort effect of carbon emission intensity among transport infrastructure enterprises,fostering an inter-enterprise competition"snowball"effect and enhancing the efficacy of government oversight.
作者
陈赟
金孜怡
CHEN Yun;JIN Ziyi(School of Traffic and Transportation Engineering,Changsha University of Science and Technology,Changsha 410114,China)
基金
湖南省交通厅科技进步与创新计划项目(201419)。
