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Expansion of city scale, traffic modes, traffic congestion, and air pollution

机译：扩大城市规模，交通模式，交通拥堵和空气污染

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摘要

In recent years, the number of large cities and the incidence of urban haze have been increasing. However, whether population growth inevitably leads to air pollution is controversial. The expansion of city scale is accompanied by changes in traffic mode and traffic congestion. However, whether such expansion influences traffic and wields a significant impact on air pollution remains unknown. Thus, this research attempts to clarify the influence mechanism of city-scale expansion on air pollution and analyze the expansion of city scale, traffic, and air pollution in the same framework. First, we find that city-scale expansion can directly influence air pollution. The scale effect of energy consumption caused by such expansion significantly aggravates air pollution, whereas the structural and technological effects can effectively improve air quality. Second, green mode of transportation can reduce air pollution, whereas traffic congestion worsens air pollution by increasing the commuting time. Third, we find that the city-scale expansion can both alleviate and worsen air pollution by promoting public transport and exacerbating traffic congestion, respectively. Therefore, the effect of city-scale expansion on air quality by influencing traffic is clearly a "double-edged sword."
机译：近年来，大城市的数量和城市阴霾的发病率一直在增加。但是，人口增长是否不可避免地导致空气污染是有争议的。城市规模的扩展伴随着交通模式和交通拥堵的变化。但是，这种膨胀是否影响交通并挥动对空气污染的显着影响仍然是未知的。因此，该研究试图阐明城市规模扩张对空气污染的影响机制，并分析了同一框架中城市规模，交通和空气污染的扩展。首先，我们发现城市规模的扩张可以直接影响空气污染。这种膨胀引起的能量消耗的规模效应显着加剧了空气污染，而结构性和技术效应可以有效提高空气质量。其次，绿色运输方式可以减少空气污染，而交通挤塞通过增加通勤时间恶化空气污染。第三，我们发现，通过促进公共交通和加剧交通拥堵，城市规模扩张既可以缓解和恶化空气污染。因此，通过影响交通的城市规模扩张对空气质量的影响显然是“双刃剑”。

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  • 来源
    《Cities》 |2021年第1期|102974.1-102974.15|共15页
  • 作者

    Lu Juan; Li Bin; Li He; Al-Barakani Abdo;

  • 作者单位

    Hunan Univ Sch Econ & Trade Changsha Peoples R China;

    Hunan Univ Sch Econ & Trade Changsha Peoples R China;

    Hunan Univ Sch Econ & Trade Changsha Peoples R China;

    Hunan Univ Sch Econ & Trade Changsha Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    City scale; Traffic mode; Traffic congestion; Air pollution;

    机译：城市规模;交通模式;交通拥堵;空气污染;

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