Study on the Pattern Characteristics and Matching Relationship of Recreational and Residential Function Space in Changsha

In an era of rapid urbanization and competitive entertainment, the relationship between recreational and residential function space has become an important issue in the field of urban regional structure. Based on POI geographic big data, by using the quantitative models such as Ripley's K function, colocation quotient, and inconsistency index, and adopting the ArcGIS spatial analysis methods for global spatial autocorrelation and kernel density estimation, this paper explores the spatial characteristics of recreational and residential function space and their relationships in Changsha. The results show that: (1) The two function spaces have significantly positive correlation at the spatial domain. The spatial patterns of different types of function spaces are significantly different but both present an agglomeration mode of "polar core of space". The agglomeration intensity of all types of function spaces is characterized by "residential space>cultural leisure space>sports and fitness space>commercial entertainment space>natural ecological space"; (2) The two function spaces have a function attenuation relationship based on "istance-quantity", and the circle radius of 3000m from the residential space is an important spatial area for the centralized distribution of recreational space and the residents' daily recreation; (3) The residential space has the spatial feature of "approaching" recreational space, but the reverse is not significant. The two function spaces show the "asymmetric" relation of one-way attraction, and the attraction level different types of recreational spaces to residential spaces is in the order of "sports and fitness space>cultural leisure space>natural ecological space>commercial entertainment space"; (4) There is strong spatial heterogeneity in the coordinated relation between recreational-residential function spaces. The west bank of Xiangjiang River is superior to the east bank. The Yuelu and Wangcheng Districts belong to recreational-residential coordination types. The Tianxin, Furong, Yuhua, and Kaifu districts are the recreation lagging residence type, while Changsha County is the type of the recreation advancing residence. This study focuses on the allocation of urban recreational facilities and their relationship with residential space in the era of new urbanization and national leisure, it provides theoretical exploration for enriching and inheriting urban public facilities location theory and urban spatial structure theory, and also provides scientific references for Changsha and other similar metropolises to rationally arrange urban recreational facilities, optimize urban spatial structure, and construct leisure livable city. © 2022, Science Press. All right reserved.