GEOGRAPHICAL RESEARCH ›› 2018, Vol. 37 ›› Issue (6): 1208-1222.doi: 10.11821/dlyj201806011

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Spatial identification and scale effects of floating population agglomerations at the community scale: A case study of Beijing

Meifeng ZHAO1(), Shenghe LIU2, Wei QI2()   

  1. 1. School of Geographic and Environmental Sciences, Tianjin Normal University, Tianjin 300387, China
    2. Key Laboratory of Regional Sustainable Development Modeling, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
  • Received:2017-12-12 Revised:2018-03-03 Online:2018-06-10 Published:2018-07-06
  • About author:

    Author: Shi Zhenqin (1988-), PhD, specialized in regional development and land space management in mountain areas. E-mail: kevinszq@163.com

    *Corresponding author: Deng Wei (1957-), Professor, specialized in mountain environment and regional development.

    E-mail: dengwei@imde.ac.cn

Abstract:

Floating population agglomeration is a typical "heterogeneous community" in big cities, with the characteristics of socioeconomic duality and and spatial heterogeneity. How to transform the floating population agglomeration has become the focus issue that influences the new-type urbanization process and the citizenization of rural migrant workers. As the basis and premise of the research on floating population agglomeration, the spatial identification of floating population agglomeration is the primary problem that needs to be solved urgently. Based on the identity of land use and population distribution, this paper uses the floating population agglomeration identification method based on spatial collocation to achieve the spatial identification of floating population agglomerations at the community scale. Then it compares the spatial identification results of the floating population agglomerations at the subdistrict scale and the community scale, identifies the spatial scale effects of floating population agglomerations, analyzes the mechanism of spatial scale effects of floating population agglomerations, and explores the necessity of choosing community scale as the basic unit. The results show that: Firstly, the floating population agglomerations at the community scale based on spatial collocation method are highly accurate, which can effectively identify approximately 90% of the floating population agglomerations in the case area. Secondly, the floating population agglomeration has significant spatial scale effects. The identification method at the larger spatial scale (subdistrict scale) easily leads to excessive or omissive identification of floating population settlement area. Meanwhile, the identification method at the smaller spatial scale (community scale) is better to grasp and reflect the social spatial differentiation. Thirdly, the main reasons of the spatial scale effects of the floating population agglomerations are as follows: the large spatial scale that easily overlooks the social spatial differentiation, the urban and rural binary socio-economic system and the high-speed urbanization process. The findings will provide technical support and methodological reference for the systematic and meticulous research of floating population agglomeration, as well as the scientific basis for the government to make relevant policies on floating population agglomerations.

Key words: floating population agglomeration, community scale, spatial identification, scale effect, Beijing