成都市餐饮业时空演变特征

Spatiotemporal Evolution Characteristics of Catering Industry in Chengdu

为探讨成都市近年来餐饮业空间格局,以成都市餐饮业2016—2022年POI数据为基础,运用核密度空间方法在Arc⁃GIS中进行时空异质性对比分析,得出以下结论:(1)从规模上来看,成都市餐饮业产值规模呈现非匀速、非正向增长,其中以2022年最为突出;成都市餐饮业数量规模四类型占比趋于均匀,小吃店占比增幅最大.(2)从时间上来看,成都市餐饮业总体呈螺旋式、非正向和非匀速上升的;(3)从类型上来看,小吃店、中餐店和冷饮店的集聚程度和集聚范围一直保持非匀速性扩大,而西餐店的集聚程度与集聚范围呈现出非匀速性、非正向性扩大.(4)成都市在演变方向上由西北-东南走向逐渐转变为东西走向并且整体南移.

In order to explore the dynamic spatial pattern of the catering industry in Chengdu in recent years,the spatial and temporal heterogeneity was analyzed by using the kernel density spatial method in ArcGIS environment based on the POI data of the catering industry in Chengdu from 2016 to 2022.The following conclusions are drawn:first,in terms of scale,the output value of Chengdu’s catering industry shows non-uniform and non-positive growth,among which 2022 is the most prominent year,the proportion of the four types of catering industry tends to be uniform,and the proportion of snack bars increases the most in Chengdu;second,from the perspective of time,Chengdu’s catering industry as a whole is spiraling,non-positive and non-uniform rising;third,from the perspective of types,the concentration degree and range of snack bars,Chinese restaurants and cold drinks shops have been increasing at a non-uniform rate,while the concentration degree and range of western restaurants have shown a nonuniform and non-positive increase;fourth,the evolution direction of Chengdu gradually changes from northwest-southeast to eastwest,and has a southward trend as a whole.