宋艳华, 焦利民, 刘稼丰, 许刚. 城市扩张程度的影响因素分析——以武汉市为例[J]. 武汉大学学报 ( 信息科学版), 2021, 46(3): 417-426. DOI: 10.13203/j.whugis20190106
引用本文: 宋艳华, 焦利民, 刘稼丰, 许刚. 城市扩张程度的影响因素分析——以武汉市为例[J]. 武汉大学学报 ( 信息科学版), 2021, 46(3): 417-426. DOI: 10.13203/j.whugis20190106
SONG Yanhua, JIAO Limin, LIU Jiafeng, XU Gang. Analysis of the Factors Affecting the Degree of Urban Expansion: Taking Wuhan City as an Example[J]. Geomatics and Information Science of Wuhan University, 2021, 46(3): 417-426. DOI: 10.13203/j.whugis20190106
Citation: SONG Yanhua, JIAO Limin, LIU Jiafeng, XU Gang. Analysis of the Factors Affecting the Degree of Urban Expansion: Taking Wuhan City as an Example[J]. Geomatics and Information Science of Wuhan University, 2021, 46(3): 417-426. DOI: 10.13203/j.whugis20190106

城市扩张程度的影响因素分析——以武汉市为例

Analysis of the Factors Affecting the Degree of Urban Expansion: Taking Wuhan City as an Example

  • 摘要: 城市斑块层面扩张程度异质性深切影响着城市物理形态演变。研究城市扩张程度的影响因素及其机制,有助于深化理解城市扩张过程,管控城市空间扩张,促进城市紧凑发展。以中国湖北省武汉市为例,采用邻近度扩张指数度量城市扩张程度,并分析了城市扩张程度的空间特征,采用相关性分析探讨城市扩张程度与速度之间的联系,构建空间回归模型探究自然、社会经济、交通、规划等因素对城市扩张程度的影响。研究发现:(1)城市扩张程度存在空间差异,由主城区向外逐渐增大;(2)城市扩张程度存在正向空间相关性;(3)城市扩张程度与扩张速度之间呈强正相关关系;(4)交通区位、规划控制、到城市中心的距离是城市扩张程度的主要影响因素,且影响程度依次降低。城市扩张程度的影响因素分析结果可为城市空间管控提供科学依据。

     

    Abstract:
      Objectives  The heterogeneity of urban expansion degree at patch level deeply affects the evolution of urban physical morphology. Studying the factors and mechanisms affecting the degree of urban expansion are conducive to deepening the understanding of the expansion process, facilitating the control of urban spatial expansion and promoting the city's compact and sustainable development.
      Methods  Firstly, we measured the degree of urban expansion of Wuhan City by the proximity expansion index (PEI), and analyzed the spatial distribution characteristics. Secondly, we divided Wuhan City into circles and calculated the expansion degree and speed of each circle, the connection between expansion degree and speed was verified by correlation analysis. Finally, a spatial regression model was constructed to explore the impact of nature, social economy, transportation, and planning on urban expansion degree.
      Results  (1) The degree of urban expansion varied in space, the degree of urban expansion gradually increased from the urban peripheral to the outside. (2) The degree of urban expansion had a positive spatial correlation. (3) There was a strong positive correlation between the degree and the speed of expansion. (4) The traffic location, the control of planning, and the distance to the city center were the main influencing factors of the degree of urban expansion, and the influence degrees decreased in sequence.
      Conclusions  The degree of urban expansion was not disorganized in spatial distribution, but was affected by some factors such as traffic location, planning, and closely related to the speed of expansion. Analyzing the influencing factors of urban expansion degree can provide useful suggestions for urban space management and control.

     

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