道路网络中心性对餐饮业空间布局的影响——以青岛市主城区为例

基于道路网络数据和兴趣点（POI）数据，以青岛市主城区为研究区域，分析道路网络中心性及餐饮业空间分布特征，采用全局和局部回归模型探究道路网络中心性对餐饮业分布的影响机制。结果表明：① 中介中心性高值区集中于城市主干道，邻近中心性呈现由中心向四周递减的环状分布特征，特征向量中心性的空间分布表现为多核心结构；② 青岛市餐饮业呈现出块状聚集、区域差异明显的空间分布格局，中餐厅、西餐厅和休闲餐饮具备多中心结构特征；③ 道路网络中心性指标与餐饮业的核密度值具有较高的空间相似性，高-高与低-低聚集区构成了主要的空间关联模式；④ 青岛市餐饮业分布受到道路网络中心性的显著影响，其中，中介中心性对餐饮业分布的影响程度较低，邻近中心性和特征向量中心性的影响程度较高。从局部来看，道路网络中心性对餐饮业分布的影响具有空间异质性，对不同类型餐饮业的影响具有明显的差异。

The Influence of Road Network Centrality on the Spatial Distribution of Catering: A Case Study of Qingdao Main Urban Area

Based on road network data and point of interest (POI) data, taking Qingdao in Qingdao main urban area as the research area, this article analyzes the centrality of road network and the spatial distribution characteristics of catering, and uses global and local regression models to explore the impact mechanism of road network centrality on the distribution of catering. The results show that: 1) The high value area of betweenness centrality is mainly concentrated in three main traffic trunk roads. The closeness centrality presents a circular distribution characteristic of decreasing from the center of the study area to the surrounding, and the spatial distribution of eigenvector centrality shows a multi-core structure. 2) Qingdao’s catering industry generally presents a spatial pattern of massive agglomeration and obvious regional differences. Chinese restaurants, Western restaurants and leisure catering have the characteristics of multi center structure. 3) The centrality index of road network has high spatial similarity with the kernel density value of catering. High-high and low-low aggregation areas constitute the main spatial correlation mode. 4) The distribution of catering in Qingdao is significantly affected by the centrality of road network. Among them, the betweenness centrality is mainly negative, and the positive effects of closeness centrality and eigenvector centrality are obvious. The impact of road network centrality on the distribution of catering has spatial heterogeneity. The imbalance of road network conditions leads to regional differences in economic activities, thus changing the spatial structure of catering. From the perspective of the impact of centrality on different types of catering, the western restaurant is most significantly affected by the road transit capacity and the importance of the road, the Chinese restaurant is the most sensitive to the improvement of road accessibility.