文献类型：期刊文献

英文题名：Flow trace: A novel representation of intra-urban movement dynamics

作者：Xing, Xiaoyue[1];Yuan, Yihong[2];Huang, Zhou[1,3,4];Peng, Xia[5];Zhao, Pengjun[6,7];Liu, Yu[1,3,4]

第一作者：Xing, Xiaoyue

通讯作者：Liu, Y[1]

机构：[1]Peking Univ, Inst Remote Sensing & Geog Informat Syst, Sch Earth & Space Sci, Beijing Beijing, Peoples R China;[2]Texas State Univ, Dept Geog & Environm Studies, San Marcos, TX 78666 USA;[3]Peking Univ, Beijing Key Lab Spatial Informat Integrat & its Ap, Beijing 100871, Peoples R China;[4]State Key Lab Media Convergence Prod Technol & Sys, Beijing 100803, Peoples R China;[5]Beijing Union Univ, Tourism Coll, Beijing 100101, Peoples R China;[6]Peking Univ, Sch Urban & Environm Sci, Beijing 100871, Peoples R China;[7]Peking Univ, Sch Urban Planning & Design, Shenzhen Grad Sch, Shenzhen 508055, Peoples R China

第一机构：Peking Univ, Inst Remote Sensing & Geog Informat Syst, Sch Earth & Space Sci, Beijing Beijing, Peoples R China

通讯机构：[1]corresponding author), Peking Univ, Inst Remote Sensing & Geog Informat Syst, Sch Earth & Space Sci, Beijing Beijing, Peoples R China.

年份：2022

卷号：96

外文期刊名：COMPUTERS ENVIRONMENT AND URBAN SYSTEMS

收录：;EI(收录号：20222412213841);Scopus(收录号：2-s2.0-85131459106);WOS:【SSCI(收录号:WOS:000814177700003)】；

基金：Acknowledgements This research was funded by the National Natural Science Founda-tion of China (41830645 and 41971331) . The authors would like to thank the anonymous reviewers for their constructive comments.

语种：英文

外文关键词：Urban rhythms; Flow trace; Big geo-data

摘要：The dynamics of human activities can illustrate how a city operates at different times. In today's highly connected urban systems, the travel flow rhythms can help uncover the functionalities of urban spaces. For efficient land use and traffic planning, it is necessary to understand how outflows and inflows of intra-urban regions change under the impact of different land uses. Many efforts have been made to characterize flow rhythms and correlate mixed land uses with intra-urban mobility, but they are limited because they separately analyze outflows and inflows and treat land use impacts as static throughout the day. We thus introduce the concept of 'flow trace' to synthesize and compare rhythms of outflows and inflows. The geometric features of flow traces help extract spatiotemporal variations of diurnal outflows/inflows and uncover the impact of land uses on local flows at different times. Using Beijing as the study area, our results demonstrate the effectiveness of flow traces in revealing monocentric flow patterns and changes of functionalities in intra-urban regions. We also investigated how the connections between land uses and flow characteristics change within a day. This useful analytical framework can be generalized to new cities and different datasets for sustainable urban development.