低碳城市的CO<sub>2</sub>与PM<sub>2.5</sub>减排协同效应分析

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摘要将基于卫星遥感数据的CO₂与PM_2.5纳入统一研究框架,运用多期双重差分等方法,在城市尺度上分析评估2007~2019年中国低碳城市政策对CO₂减排与PM_2.5污染控制的协同效应及其影响机制.研究发现:低碳城市CO₂与PM_2.5减排的协同效应十分显著,低碳政策使试点城市的CO₂排放量和大气PM_2.5浓度分别下降3.2%和0.74%,且结论在一系列稳健性检验后依然成立.机制分析表明,改善公共交通环境是低碳城市建设实现协同效应的最主要途径.低碳城市政策的协同效应存在地区差异,经济发展水平高、产业结构水平高的城市以及非资源型城市的协同效应更为显著.对此,应充分发挥协同效应,进一步加快低碳城市建设,实现CO₂和PM_2.5等大气污染物协同治理.

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	赵彦云
	陆香怡
	王汶

关键词 ：协同效应, CO₂, PM_2.5, 低碳城市, 双重差分

Abstract：This paper incorporated CO₂ and PM_2.5 that based on satellite remote sensing data into a unified research framework. The time-varying difference-in-differences model was used to explore the Co-benefits and impact mechanism of low-carbon city construction from 2007 to 2019 at the city scale. It was found that the Co-benefits of CO₂ and PM_2.5 were significant, which reducing CO₂ emissions and atmospheric PM_2.5 concentrations in pilot cities by 3.2% and 0.74%. The findings still held after a series of robustness tests. The mechanism analysis showed that improving the public transportation environment was the most important way to achieve the Co-benefits in low-carbon city construction. Moreover, there were regional differences in the Co-benefits of low carbon policies, and the Co-benefits were more significant in cities with high levels of economic development, high levels of industrial structure, and non-resource-based cities. Therefore, we should give full play to the Co-benefits and further accelerate the construction of low-carbon cities to promote the synergistic management of CO₂, PM_2.5 and other air pollutants.

Key words： co-benefits CO₂ PM_2.5 low-carbon cities difference-in-differences

收稿日期: 2022-06-17

PACS:

X51

基金资助:国家重点研发计划项目(2021YFB3901201);中国人民大学科学研究基金资助重大规划项目(17XNLG09)

通讯作者: 赵彦云,教授,cas-kriu@ruc.edu.cn E-mail: cas-kriu@ruc.edu.cn

作者简介: 赵彦云(1957-,)男,天津武清县人,教授,博士,主要研究方向为经济统计和分析、国际竞争力与创新指数、互联网统计及大数据应用.发表论文300余篇.

引用本文:

赵彦云, 陆香怡, 王汶. 低碳城市的CO₂与PM_2.5减排协同效应分析[J]. 中国环境科学, 2023, 43(1): 465-476. ZHAO Yan-yun, LU Xiang-yi, WANG Wen. Assessment for Co-benefits of low-carbon city on CO₂ and PM_2.5 in China. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(1): 465-476.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2023/V43/I1/465

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