Revealing the suburbanization characteristics of mobile-office worker's job-house space from the perspective of migration:A big data empirical study on the impact of ICT on suburbanization
The phenomenon of suburbanization under the influence of ICT has always been a hotspot in the study of urban space.As a new type of job activity derived from information and communications technology,mobile-office greatly improves the flexibility and mobility of individual's job-house space choices,which provides a new perspective for analyzing the suburbanization phenomenon of urban space,as well as the laws of how urban spatial structure to evolve.Based on the mobile phone big data,we firstly build the job-house spatial migration database of high-frequency mobile-office workers and non-mobile workers in Wuhan between 2019-2021 and 2021-2023,then explore the quantity,space,structural characteristics and evolution trend of their migration by using comparative analysis,spatial analysis,social network analysis.Our research has shown that mobile office has a promoting effect on the suburbanization of job-house space.Detailed conclusions are listed below.(1)The number and proportion of mobile-office workers migrating their job-house space from the central urban area to the suburban new city are higher than those of non-mobile office workers,with a larger number of moving out and relatively few moving back,and the trend of decentralization towards the suburban new city continues to strengthen.(2)Mobile-office workers mainly migrate from the central urban area to suburban new city,while non-mobile office workers mainly migrate within the central urban area.Besides,the mobile-office population has a greater negative net migration within the central urban area,while a greater positive net migration occurs in suburban new city.Our discovery indicates that the decentralization trend of mobile-office workers moving to the suburban new city has been further strengthened.(3)In terms of structural characteristics,the centrality of mobile-office workers in some suburban new city centers shows a potential trend of exceeding central urban area,and their centrality increase is higher than one-third of the central urban center.In addition,compared to suburbanization of job space,the dispersion of home space among mobile-office workers are stronger,with a wider migration district range,gradually spreading from the central urban area to the suburban new city and the far suburban city area.These conclusions indicate that the selection choice of job-house space for mobile-office workers obviously weakens the geographical agglomeration effect.Our study confirms the suburbanization trend of urban space under the influence of ICT,enriching the relevant research on the pattern and process of how ICT influences the suburbanization,as well as providing a theoretical perspective for analyzing the suburbanization of urban space in cities,which is of great importance to further integration of urban and suburban areas,and sustainable development of suburban new cities.
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