Spatial accessibility and layout optimization of fitness facilities in Baoji City based on the basis of POI data
Purposes—To reveal the spatial differences and accessibility status of fitness facilities in Baoji City,and provide guidance and suggestions for the rational allocation and spatial planning layout of fitness facilities in Baoji City.Methods—Based on the POI data,county population data,index of the light at night,traffic road data and DEM data of fitness facilities in Baoji City,the spatial differen-tiation pattern and accessibility of fitness facilities in Baoji City were studied by using standard devia-tion ellipse,kernel density analysis,average nearest neighbor analysis and geographic detector.Re-sults—(1)In terms of the number of fitness facilities,Weibing District,Jintai District and Meixian County had the highest proportion,accounting for 15.54%,14.79%and 14.04%of the total number of fitness facilities respectively,while Qianyang County and Linyou County has the lowest proportion,accounting for 2.06%;(2)The fit ness facilities in Baoji City are distributed along the long axis,showing a"northwest-southeast"distribution,which is characterized by dense distribution in urban areas,sparse distribution in suburban counties,intensive along the river and disperse away from the river;(3)The overall spatial distribution of fitness facilities in Baoji city is uneven,which is charac-terized by sparse distribution characteristics in the north and the south of the city,and better distribu-tion in the city and the north than that in the south of the city;(4)The spatial distribution type of fit-ness facilities in Baoji City is agglomeration.The accessibility of fitness facilities in Baoji urban area is high,while that in the urban fringe area is insufficient,reflecting the gap between urban and rural distribution of fitness facilities;(5)Population density and index of the light at night have a greater impact on the spatial differentiation of fitness facilities,while river system has a smaller impact on the spatial differentiation of fitness facilities.It is expected to provide guidance and suggestions for the ra-tional allocation and spatial planning of fitness facilities in Baoji City,so as to achieve the purpose of comprehensively improving the national physique and health level,and make practical contributions to the basic construction of a national fitness system with Chinese characteristics.Conclusion—There is a significant gap between urban and rural areas in Baoji's sports fitness service facilities,so it is necessa-ry to optimize and improve the layout of its facilities.