基于POI数据的南京市公共体育场馆空间格局分析

Analysis on spatial pattern of Nanjing gymnasium based on POI data

为了对南京公共体育场馆进行空间格局分析,本文利用腾讯地图获取兴趣点数据,采用了核密度、标准差椭圆、空间自相关等空间分析方法。结果发现:①南京市体育场馆呈现“西北-东南”走向分布,且体育场馆各类型离散程度差异明显;②体育场馆整体呈现“中心聚集+外围扩散”格局,具体来说为中部发达区呈现聚集格局,四周较为疏散。将其分为四类后,发现呈现“散点状-多区域”的空间分布特征;③以体育场馆为核心的15分钟健身圈完全覆盖玄武、鼓楼、秦淮、建邺,基本覆盖雨花台和栖霞,其他区出现大面积无体育馆辐射状态;④南京市大部分行政区单位面积的体育馆数总体的相关性不够显著,仅有鼓楼区、建邺区和秦淮区出现了“高-高集聚”的现象;⑤体育馆分布与住宅小区呈弱正相关,但沿地铁站点交通网分布,具有交通便利性。

In order to analyze the spatial pattern of nanjing public sports venues,this paper used the Tencent map to obtain data of interest points,and adopted spatial analysis methods such as kernel density,standard deviation ellipse and spatial autocorrelation.The results were as follows:(1)the distribution of stadiums and gymnasiums in nanjing showed a"northwest to southeast"trend,and the dispersion degree of stadiums and gymnasiums differed significantly.(2)As a whole,the stadium presents a"central gathering+peripheral diffusion"pattern.Specifically,the central developed area present a gathering pattern,and the surrounding area is relatively evacuated.They were divided into four categories and show the spatial distribution characteristics of"scattered-multi-region".(3)The 15-minute fitness circle with stadiums as the core completely covers Xuanwu,Drum Tower,Qinhuai and Jianye,and basically covers Yuhuatai and Qixia,while there was a large area without stadium radiation in other areas;(4)The overall correlation of the number of gyms per unit area in most administrative areas of Nanjing was not significant,except in Gulou District,Jianye District and Qinhuai District,which presented a"high-high agglomeration"phenomenon;(5)The distribution of gymnasiums was weakly positively correlated with residential areas,but it was distributed along the subway station network,which was convenient for transportation.