Study on the Suburbanization Process and the Effect of Population Structure Redistribution in Big Cities from the Perspective of Separation of Registered and Actual Residences:Based on an Empirical Study of Nanjing
The population whose registered and actual residences are separated is the main component of urban floating population,and its characteristics and spatial distribution change are important perspective to under-stand the trend of suburbanization in big cities.The population scale of household registration separation has grown rapidly in the past two decades,with a significantly increased proportion of the total population.The shift from an inflow-oriented model to an intra-city separation model is evident,with demographic characteris-tics indicating trends towards higher education levels and aging,while spatial distribution has changed from core area aggregation to suburban aggregation.Based on the above characteristics,the process and degree of suburbanization of Nanjing city are re-recognized:(1)From 2000 to 2010,Nanjing experienced a rapid ur-banization stage in which the population in the core area and the suburbs generally increased,and the migrant population was the main source of population growth in the suburbs during this period;(2)From 2010 to 2020,Nanjing enters the stage of large-scale urban suburbanization,in which the population in the core area decreases while the degree of population agglomeration in the suburbs increases significantly,and the popula-tion whose registered and actual residences are separated replaces the floating population as the main source of population growth in the suburbs;(3)In 2020,the separation rate of permanent residents in Nanjing's sub-urbs is as high as 54.4%,indicating that Nanjing is still in a state of"semi-suburbanization",characterized prominently by"moving without changing household registration",and the near suburbs have not grown into a comprehensive urban area relatively independent from the core area and relatively complete in function.Sub-urbanization has brought about the unbalanced redistribution effect of population structure.It is necessary to pay attention to and actively deal with the problems of population loss and structural decline in the core areas,the"separation rate of residence and household registration"in the suburbs is too high,and the aging popula-tion in the outer suburbs continues to deepen.
megacityseparation of registered and actual residencessuburbanizationcensusspatial redistribution of demographic structureurban regeneration
NETL
NSTL
万方数据
