School of Economics and Management, Hebei University of Technology, Tianjin 300401, PR China.
School of Economics and Management, Hebei University of Technology, Tianjin 300401, PR China.
Sci Total Environ. 2021 Jun 10;772:145058. doi: 10.1016/j.scitotenv.2021.145058. Epub 2021 Feb 4.
Carbon mitigation in the urban residential building sector is critical for China to achieve its carbon peak and carbon neutral commitment. However, how urbanization affects urban residential building carbon emissions is still unclear. This study adopts the panel threshold regression model to explore the dynamic influence mechanism of the urbanization on urban residential building CO emissions based on the evidence from China's 30 provincial regions during 2000-2015. Results indicate that urbanization contributes positively to the increase of urban residential building CO emissions, while such degree of influence varies across different stages of income and energy structure. As for per capita income, the promoting effect of the urbanization on urban residential building CO emissions is enhanced with the growth of per capita income. And the degree of such increasing effect becomes greater when per capita income exceeds its threshold value. Regarding the energy mix, the driving effect of urbanization on urban residential building CO emissions is also strengthened when the energy mix crosses its threshold value, showing a "stepwise growth" feature. This study reveals the nonlinear influence mechanism of urbanization on urban building CO emissions, and this is helpful in boosting the related theoretical and practical exploration on the impact of urbanization on the environment. Based on our findings, an environmentally-friendly consumption pattern should be promoted and more penetration of cleaner energies should be improved in urban households, which will be effective to alleviate the increase of residential carbon emissions.
城市住宅建筑部门的碳减排对于中国实现碳峰值和碳中和承诺至关重要。然而，城市化如何影响城市住宅建筑碳排放仍不清楚。本研究采用面板门槛回归模型，基于 2000-2015 年中国 30 个省级地区的证据，探讨了城市化对城市住宅建筑 CO 排放的动态影响机制。结果表明，城市化对城市住宅建筑 CO 排放的增加有正向贡献，但其影响程度在不同的收入和能源结构阶段有所不同。就人均收入而言，城市化对城市住宅建筑 CO 排放的促进作用随着人均收入的增长而增强。当人均收入超过其门槛值时，这种增强效应的程度会更大。关于能源结构，当能源结构越过其门槛值时，城市化对城市住宅建筑 CO 排放的驱动效应也会增强，呈现出“阶梯式增长”的特征。本研究揭示了城市化对城市建筑 CO 排放的非线性影响机制，有助于推动城市化对环境影响的相关理论和实践探索。基于我们的研究结果，应在城市家庭中推广环保消费模式，提高清洁能源的普及率，这将有效缓解住宅碳排放的增加。
