Research On The Matching Of Public Service Facilities And Population In The Main Urban Area Of Lanzhou Based On The Living Circle

Public service facilities(PSF)are the basic guarantee of urban production and living.The fairness and impartiality of the distribution process and results of public service facilities affects the healthy operation of society.At present,the allocation of PSF in our country has problems such as uneven spatial distribution and unbalanced supply and demand structures.The contradictions between people’s demand and the shortage of facilities and dislocation of allocation have become increasingly prominent.We need to re-examine the fitting relationship between PSF and the population from the perspective of supply and demand.In this context,from the perspective of the urban life circle,this article incorporates the daily travel of residents into the study of the configuration of PSF,uses POI data to characterize PSF and residential areas.After re-integration of residential areas,using Baidu map API to constructed 5 min、10min、15min and commuting circle on Lanzhou.Then using a supervised learning algorithm model to generate a high-resolution Lanzhou’s population distribution map,comprehensively assess the adaptation status of the supply and demand sides of PSF.Additional established the administrative district and grid two perspectives as the fitness assessment control group.the study results found:1)Compared with administrative districts and grid,the living circle is more suitable for research and evaluation of the allocation of public service facilities.2)From the perspective of spatial distribution of matching,the periphery of the district-level center is concentrated with high-matching living circles,the urban fringe is the main distribution of missing-matching living circles,and the adaptivetype living circles are scattered.3)Judging from the coverage of various types of facilities with high-matching and adaptable living circles,in most regions,the elderly facilities and basic cultural facilities at all levels are obviously under-configured,or even seriously in short;there are also some facilities with high-matching and adaptive types.The proportion of living circles is high and the coverage is wide.Such facilities are medical(but the medical facilities corresponding to the 10 min living circle are relatively lacking),travel,dining,entertainment and convenience outlets,parks and security;Additionally,education,Food,health and basic consumer facilities are medium-covered facilities.4)Judging from the differences of similar facilities in different types of living circles,with the expansion of the scope of living circles,the level of coverage of high-fitting and adaptive living circles of similar facilities generally does not change significantly.Only large-scale commuter living circles of all types of facilities are mainly high-fitting and adaptable living circles.This is because the facilities in highlevel living circles have higher service levels and need to provide services to larger areas.