基于分形理论的城市群轨道交通协调性分析
Analysis of Urban Agglomeration Rail Transit Coordination Based on Fractal Theory
梅梦君 1陈鼎 1苏敏咸 2王成 3许俊城1
作者信息
- 1. 厦门理工学院机械与汽车工程学院,福建 厦门 361024
- 2. 厦门市卫星定位应用股份有限公司,福建 厦门 361006
- 3. 华侨大学计算机科学与技术学院,福建 厦门 361021
- 折叠
摘要
为解决城市群轨道交通规划与城市群内部各要素间发展不均衡的现状,基于分形理论构建城市群轨道交通分维协调性指数模型,将线网长度—人口规模、线网长度—经济体量的复合指标融合作为轨道交通协调性模型参数,进行城市群轨道交通整体协调性的量化表征.以多视角关联关系揭示长三角、京津冀和粤港澳大湾区城市群内部空间结构的复杂特征,分析典型城市群轨道交通发展协调性.结果表明,线网长度、人口规模和经济体量在分布形态上围绕空间面域几何中心呈凝聚状分布,中心趋向性和四周分散程度明显.长三角轨道交通协调性指数为0.94,城市群线网长度、人口规模和经济体量呈现同步发展趋势,相对均衡性明显;京津冀和粤港澳大湾区轨道交通协调性指数分别为1.12和0.74,线网建设与城市群内部发展空间不匹配,表明两者分别在经济体量、人口规模方面相对滞后.
Abstract
Aiming at addressing the unbalanced development status of urban agglomeration rail transit planning and various elements within urban agglomeration,a fractal dimension coordination index model of urban agglomeration rail transit based on fractal theory from the macro level is established to provide a reference for the comprehensive and coordinated development of urban agglomeration.Integrated composite indicators of transit network length-population size and transit network length-economic volume are used as the model parameter of rail transit coordination to quantitatively characterize the overall coordination of rail transit in urban agglomerations.Further descriptive statistical analysis is carried out using examples of urban agglomerations in the Yangtze River Delta,Beijing-Tianjin-Hebei and Guangdong-Hong Kong-Macao Greater Bay Area,and the coordination of rail transit development in typical urban agglomerations are revealed from multiple perspectives.The results show that the network length,population size and economic volume are cohesively distributed around the geometric center of the spatial surface area,with distinct central tendency and dispersion around the center.The rail transit coordination index of the Yangtze River Delta is 0.94,which reflects the synchronous development trend of the transit network length,population size and economic volume of the urban agglomeration as well as a distinct relative equilibrium.Beijing-Tianjin-Hebei rail transit coordination index and Guangdong-Hong Kong-Macao Greater Bay Area rail transit coordination index are 1.12 and 0.74,respectively,indicating a lack of balance in development between the transit network and the internal space of the urban agglomerations,which suggests that both regions are relatively lagging behind in terms of economic volume and population size.
关键词
城市群/轨道交通/协调性指数模型/分形理论/多视角关联Key words
urban agglomeration rail transit/coordination/fractal theory/multi-perspective association引用本文复制引用
基金项目
福建省自然科学基金(2021J011202)
福建省科技计划引导性项目(2021H0019)
厦门理工学院研究生科技创新项目(YKJCX2022027)
出版年
2024
NETL
NSTL
万方数据