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Revisiting the gravity laws of inter-city mobility in megacity regions

Science China Earth Sciences 2023年第2期66卷 271-281页

作者： Pengjun ZHAO Haoyu HU Liangen ZENG Jun CHEN Xinyue YE College of Urban and Environmental Sciences Peking UniversityBeijing100871China School of Urban Planning and Design Peking University Shenzhen Graduate SchoolShenzhen518055China Laboratory for Laboratory for Earth Surface System and Human-Earth Relations Ministry of Natural Resources of ChinaPeking University Shenzhen Graduate SchoolShenzhen518055China National Geomatics Center of China Beijing100048China Department of Landscape Architecture and Urban Planning Texas A&M UniversityCollege StationTX77843USA

inter-city mobility is one of the most important issues in the UN Sustainable Development Goals,as it is essential to access the regional labour market,goods and services,and to constrain the spread of infectious *** the gravity model has been proved to be an effective model to describe mobility among settlements,knowledge is still insufficient in regions where dozens of megacities interact closely and over 100 million people *** addition,the existing knowledge is limited to overall population mobility,while the difference in inter-city travel with different purposes is unexplored on such a large geographic *** revisited the gravity laws of inter-city mobility using the 2.12 billion trip chains recorded by 40.48 million mobile phone users’trajectories in the Jing-Jin-Ji Region,which contains China’s capital ***,unlike previous studies,we found that non-commuting rather than commuting is the dominant type of inter-city mobility(89.3%).Noncommuting travellers have a travel distance 42.3%longer than commuting ***,we developed more accurate gravity models for the spatial distribution of inter-city commuting and non-commuting *** also found that inter-city mobility has a hierarchical structure,as the distribution of inter-city travel volume follows Zipf’s *** particular,the hierarchy of non-commuting travel volume among the cities is more in line with an ideal Zipf distribution than commuting *** findings contribute to new knowledge on basic inter-city mobility laws,and they have significant applications for regional policies on human mobility.

关键词： Mobility inter-city Travel behaviour Megacity region Zipf’s law China

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Spatial Development Mechanism of the Transport-oriented inter-city Railway Station Area

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China city Planning Review 2011年第4期20卷 48-55页

作者： ZHOU Wenzhu, YANG Jianqiang,QIAN Fang Post-Doctoral Fellow, School of Architecture, Southeast University Research Associate, Hong Kong University of Science & Technology Supervisor of Doctoral Candidate, School of Architecture, Southeast University

The paper starts with a survey on the demands of train passengers from Shanghai to Nanjing on facilities surrounding the railway station, initiating a discussion on the direction of industrial transformation in the station area. Then, on the basis of a questionnaire on passengers' choice of traveling modes and affordable time to various facilities, the paper studies the scale of spatial layers of railway stations, the distribution characteristics of industries, as well as the related land-use pattern, through an analysis on the traveling distance features of passengers. In the end, with a case study on Changzhou station on the Shanghai-Nanjing high-speed railway line, the paper suggests a method defining the land development intensity degree that is based on the capacity of local transportation. Moreover, the study on the spatial development mechanism for transport-oriented inter-city railway station area that is conducted in the paper will efficiently coordinate and optimize the spatial development and the efficiency promotion, and balance the relationship between the concentration of city functions and the degree of transportation convenience, which possess guiding significance to the planning and construction of station areas along the inter-city railway.

关键词： inter-city railway passenger demands industrial di

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