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Does polycentric and compact development alleviate urban traffic congestion? A case study of 98 Chinese cities

机译：多中心，紧凑的发展是否会缓解城市交通拥堵？以中国98个城市为例

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摘要

Despite a growing interest among policymakers and urban planners in promoting polycentric and compact development to mitigate traffic congestion, empirical studies have often documented mixed and indirect evidence on the impacts of polycentricity and compactness on congestion. Drawing upon a direct and big-data based measure of congestion and gridded (1 km x 1 km) population data of 98 Chinese cities, this study investigates how polycentricity and compactness may affect congestion in these cities. The degrees of poly centricity and compactness are measured through fine-grained identification of population centers. All else being equal, the empirical results show that congestion is positively associated with the degree of compactness but negatively associated with that of polycentricity. However, increasing the degree of polycentricity by developing more than four population centers may also lead to more congestion. Furthermore, the negative impact of polycentricity on congestion becomes weaker with the increase in a city's population and even turns positive for large cities with more than six million inhabitants within urban districts. The paper concludes with spatial planning implications.
机译：尽管决策者和城市规划者对促进多中心和紧凑型交通发展以减轻交通拥堵的兴趣日益浓厚，但经验研究通常记录了关于多中心性和紧凑性对交通拥堵影响的混合和间接证据。本研究以直接的大数据量度为基础，对98个中国城市的交通拥堵和网格化（1 km x 1 km）人口数据进行了研究，研究了多中心性和紧凑性如何影响这些城市的交通拥堵。多中心性和紧凑性程度是通过对人口中心的细粒度识别来衡量的。在所有其他条件相同的情况下，经验结果表明，拥挤与紧凑程度呈正相关，而与多中心性则呈负相关。但是，通过建立四个以上的人口中心来提高多中心性程度也可能导致更多的交通拥堵。此外，随着城市人口的增加，多中心性对交通拥堵的负面影响变得更弱，甚至对于市区内人口超过600万的大城市而言，甚至变为正面。本文以空间规划的意义进行了总结。

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  • 来源
    《Cities》 |2019年第5期|100-111|共12页
  • 作者

    Li Yingcheng; Xiong Weiting; Wang Xingping;

  • 作者单位

    Southeast Univ, Sch Architecture, 2 Sipailou, Nanjing 210096, Jiangsu, Peoples R China|MIT, Dept Urban Studies & Planning, 77 Massachusetts Ave, Cambridge, MA 02139 USA;

    Southeast Univ, Sch Architecture, 2 Sipailou, Nanjing 210096, Jiangsu, Peoples R China|MIT, Media Lab, 77 Massachusetts Ave, Cambridge, MA 02139 USA;

    Southeast Univ, Sch Architecture, 2 Sipailou, Nanjing 210096, Jiangsu, Peoples R China;

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

    Polycentricity; Compactness; Spatial structure; Congestion; Commute;

    机译：多中心性;紧凑性;空间结构;拥挤;通勤;

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