Faculty of Architecture, RWTH Aachen University, Aachen, Germany.
School of GeoSciences, University of Edinburgh, Edinburgh, United Kingdom.
PLoS One. 2021 Apr 23;16(4):e0250348. doi: 10.1371/journal.pone.0250348. eCollection 2021.
The size of a city is not only essential for depicting the scale of the urban system, but also crucial to support the prosperity, order, and high-speed developments. However, its relation to the underlying urban structure has not been empirically investigated in detail. To examine the impact of city size on the city structure and quantify structural features, in this study, a statistical analysis was performed based on network science and an interdisciplinary theoretical system. To obtain the statistical law of internal node layout, the urban system was regarded as a complete graph weighted by the Euclidean distance. The relationship between the urban internal nodes layout (points of interest data, Weibo check-in data, and central point of road intersection data) and the city size was established. The results confirmed the existence of statistical laws in the layout of urban spatial elements, and explored the relationship between the changes in urban node network structure and inequality. This study provided a new perspective of urban structure to understand the complexity of the city, and suggested an approach to adjust this structure to narrow down the gap between the urban and rural areas.
城市的规模不仅对于描绘城市系统的规模至关重要，而且对于支持城市的繁荣、秩序和高速发展也至关重要。然而，城市规模与城市结构之间的关系尚未得到详细的实证研究。为了研究城市规模对城市结构的影响，并量化结构特征，本研究基于网络科学和跨学科理论体系进行了统计分析。为了获得内部节点布局的统计规律，将城市系统视为一个完全图，其权重由欧几里得距离确定。建立了城市内部节点布局（兴趣点数据、微博签到数据和道路交叉口中心点数据）与城市规模之间的关系。结果证实了城市空间元素布局存在统计规律，并探讨了城市节点网络结构变化与不平等之间的关系。本研究为理解城市复杂性提供了一个城市结构的新视角，并提出了一种调整城市结构的方法，以缩小城乡差距。
