Acta Geographica Sinica ›› 2021, Vol. 76 ›› Issue (10): 2458-2476.doi: 10.11821/dlxb202110009

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A comparison study on residential differentiation at multiple spatial and temporal scales in Nanjing and Hangzhou

SONG Weixuan1(), HUANG Qinshi2,3(), GU Yue1,4, HE Ge3   

  1. 1. Nanjing Institute of Geography and Limnology, Key Laboratory of Watershed Geographic Sciences, CAS, Nanjing 210008, China
    2. School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou 310023, China
    3. School of Architecture and Urban Planning, Nanjing University, Nanjing 210093, China
    4. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2021-01-30 Revised:2021-06-30 Online:2021-10-25 Published:2021-12-25
  • Contact: HUANG Qinshi E-mail:wxsong@niglas.ac.cn;huangqinshi@zust.edu.cn
  • Supported by:
    National Natural Science Foundation of China(41771184);National Natural Science Foundation of China(42171234)

Abstract:

Residential differentiation is a timeless and classic research topic in the field of urban geography and urban sociology. Urban residential differentiation contains dual socio-spatial attributes of social group differentiation and residential differentiation. Existing studies rely largely on population statistics and social survey data, from the perspective of differentiated social groups to effectively reflect, verify and analyze data from a single city. This empirical analysis is unable to effectively reflect the increasing complexity, heterogenous and fragmented situation of residential differentiation in large cities. There have been fewer comparative studies between similar cities. This paper, in the perspective of residential space, uses housing price as an indicator, and adopts methods such as multi-group segregation index, multi-group spatial segregation index and geographic detector. In particular, Nanjing and Hangzhou from 2009-2018 are taken as cases and census track, block and grid as basic units to carry out a quantitative study on residential differentiation and comparison in Nanjing and Hangzhou at multiple spatial and temporal scales. Through analysis of the above data, the following is observed: (1) Urban residential differentiation, characterized by residential difference, is more time-sensitive and accurate, and spatial segregation index is a correction to the traditional non-spatial segregation index. (2) The high and low-priced housing spatial segregation index in Nanjing is significantly higher than that in Hangzhou, of which spatial structure is a significant factor. (3) The influencing factors and combined features of residential differentiation in Nanjing and Hangzhou show certain similarities, of which "central location" and "education package" have the strongest explanatory power. As an innovative exploration, this paper attempts to provide new perspectives, methods and ideas for studies on urban residential differentiation, hoping to enrich the research on Chinese urban social geography in the new era.

Key words: social space, residential differentiation, multiple scales, housing price, spatial segregation index, Nanjing, Hangzhou