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Asymmetric relationship of urbanization and CO2 emissions in less developed countries

机译:欠发达国家城市化与二氧化碳排放量之间的不对称关系

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摘要

Understanding the relationship between carbon dioxide (CO2) emissions and the urbanization of national populations has been a key concern for environmental scholars for several decades. Although sophisticated modeling techniques have been developed to explore the connection between increases in urban populations and CO2 emissions, none has attempted to assess whether declines in urbanization have an effect on emissions that is not symmetrical with that of growth in urbanization. The present study uses panel data on CO2 emissions and the percentage of individuals living in urban areas, as well as a variety of other structural factors, for less-developed countries from 1960–2010, to empirically assess whether the effect of growth in urban populations on emissions is symmetrical with the effect of decline. Findings indicate that the effect of growth/decline in urban populations on CO2 emissions is asymmetrical, where a decline in urbanization reduces emissions to a much greater degree than urbanization increases emissions. We hypothesize that this is at least in part because deurbanization is connected with disruptions to the production and distribution of goods and services and/or access to electricity and other energy sources. Our finding suggests that not only the absolute level of urbanization of nations matters for emissions, but also how the patterns of migration between rural and urban areas change over time. Future research should be mindful of the processes behind deurbanization when exploring socioeconomic drivers of CO2 emissions.
机译:几十年来,了解二氧化碳(CO2)排放与全国人口城市化之间的关系一直是环境学者关注的主要问题。尽管已经开发出复杂的建模技术来探索城市人口增加与CO2排放之间的联系,但没有人试图评估城市化的下降是否会对排放产生与城市化的增长不对称的影响。本研究使用关于1960-2010年欠发达国家的CO2排放量和居住在城市地区的个体百分比以及各种其他结构性因素的面板数据,以经验评估城市人口增长的影响是否排放量呈对称下降趋势。研究结果表明,城市人口增长/下降对二氧化碳排放量的影响是不对称的,与城市化增加排放量相比,城市化的减少量减少的排放量要大得多。我们假设这至少部分是因为去城市化与商品和服务的生产和分配以及/或电力和其他能源的获取受到干扰有关。我们的发现表明,不仅国家的绝对城市化水平对排放至关重要,而且随着时间的推移,城乡之间的迁移方式也会发生变化。在探索CO2排放的社会经济驱动因素时,未来的研究应注意去郊区化的过程。

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  • 年(卷),期 -1(13),12
  • 年度 -1
  • 页码 e0208388
  • 总页数 12
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