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

作     者：Pengjun ZHAO Haoyu HU Liangen ZENG Jun CHEN Xinyue YE Zhao P;Hu H;Zeng L;Chen J;Ye X

作者机构：College of Urban and Environmental SciencesPeking UniversityBeijing100871China School of Urban Planning and DesignPeking University Shenzhen Graduate SchoolShenzhen518055China Laboratory for Laboratory for Earth Surface System and Human-Earth RelationsMinistry of Natural Resources of ChinaPeking University Shenzhen Graduate SchoolShenzhen518055China National Geomatics Center of ChinaBeijing100048China Department of Landscape Architecture and Urban PlanningTexas A&M UniversityCollege StationTX77843USA 

出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)

年 卷 期：2023年第66卷第2期

页      面：271-281页

核心收录：

学科分类：060201[历史学-历史地理学] 12[管理学] 120203[管理学-旅游管理] 1202[管理学-工商管理] 06[历史学] 07[理学] 070502[理学-人文地理学] 0705[理学-地理学] 0701[理学-数学] 0602[历史学-中国史] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.41925003&42130402) the Beijing Municipal Social Science Foundation(Grant No.20JCB073) 

主　　题：Mobility Inter-city Travel behaviour Megacity region Zipf’s law China 

摘      要：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.