School of Economics and Management, Hubei Normal University, Huangshi, 435002, China.
Economics and Management School, Wuhan University, 430072, Wuhan, China.
Environ Sci Pollut Res Int. 2022 Dec;29(57):86692-86706. doi: 10.1007/s11356-022-21722-9. Epub 2022 Jul 7.
The study explored the influencing mechanism of population agglomeration in large cities on carbon emissions, including technological innovation, industrial structure, and transportation effects. Moreover, we attempt to explore the nonlinear impact of population agglomeration in large cities on carbon emissions. We used the panel data of 207 big cities with a permanent resident population of more than 1 million to study the relationship between population agglomeration and carbon emissions. We found that population agglomeration to big cities increased urban carbon emissions significantly. The results of the mechanism analysis showed that population agglomeration to big cities raised carbon emissions by the channel of industrial structure and transportation effects. The channel of technological innovation effect decreased carbon emissions but did not offset the growth of carbon emissions caused by industrial structure and transportation effects. Nonlinear estimation findings demonstrated that the impact of population agglomeration on carbon emissions was different in big cities with varying levels of population.
本研究探讨了大城市人口集聚对碳排放的影响机制，包括技术创新、产业结构和交通效应。此外，我们还试图探讨大城市人口集聚对碳排放的非线性影响。我们使用了常驻人口超过 100 万的 207 个大城市的面板数据来研究人口集聚与碳排放之间的关系。我们发现，人口向大城市集聚显著增加了城市的碳排放。机制分析结果表明，人口向大城市集聚通过产业结构和交通效应两个渠道增加了碳排放。技术创新效应渠道减少了碳排放，但并未抵消产业结构和交通效应导致的碳排放增长。非线性估计结果表明，人口集聚对不同人口规模大城市的碳排放影响存在差异。
