基于POI大数据的南宁市零售业空间分布特征及形成机理研究

Research on spatial distribution characteristics and formation mechanism of retail industry in Nanning based on POI big data

合理的城市零售业空间布局对促进城市经济发展、优化城市结构、满足城市居民消费需求等具有重要意义。本文以南宁市零售业POI、GDP、人口和交通等数据为基础,采用核密度法、空间相关分析、Getis-Ord G*指数统计、平均最邻近距离等方法,剖析城市不同零售业态集聚区的空间分布特征及空间布局形成机理,研究零售业与人口、经济、交通等的空间关联。结果表明:①整体上零售业集中在南宁中心城区内,由中间向四周扩散。②零售业热点在空间分布上形成多中心发展、四周蔓延形态。③零售业的空间分布与交通主干线高度关联,同时,零售业的集聚及布局与经济、人口都有很强的空间相关性。

The reasonable spatial layout of urban retail is of great significance to promote urban economic development,optimize urban structure,and meet the consumption needs of urban residents.Based on the POI,GDP,population,and traffic data of the retail industry in Nanning,this paper uses methods of nuclear density method,spatial correlation analysis,Getis-Ord G* index statistics,and average nearest neighbor distance analysis to expound the formation mechanism of spatial distribution characteristics and spatial layout of the city’s different retail business clusters,and to research the spatial correlation between retail industry and population,economy,transportation,etc.The results show that:1) Retail business is concentrated in the central city of Nanning,spreading from the middle to the surroundings.2) Retail business hotspots form a pattern of block clustering,extension around,and multi-center development in spatial distribution.3) Spatial distribution of retail industry is highly consistent with the main traffic.At the same time,the agglomeration and layout of the retail industry have a strong spatial correlation with the economy and population.