外卖消费空间集聚特征及其影响因素研究OACHSSCD

In the context of the rapid development of the platform economy and digital technologies,digital consumption is profoundly reshaping the spatial patterns of urban consumption and behavioral modes of residents.Food delivery is a typical online-to-offline consumption form.Its spatial agglomeration characteristics and formation mechanisms are a key entry point to understand the interactive relationship between the"virtual"and"physical"spaces of cities in the digital era.This case study,based on Nanjing,aimed to systematically reveal the spatial agglomeration characteristics of takeaway consumption and the spatial heterogeneity of its multi-dimensional influencing factors.Furthermore,the new model of urban space and resident consumption was analyzed. The study covers the entire administrative area of Nanjing,using a 1km×1km grid as the basic unit.Multi-source data,including 2022 takeaway order data,points of interest,transportation networks,and mobile phone signaling data,were integrated.Nuclear density analysis was employed to identify spatial agglomeration patterns.Ordinary least squares regression was used to screen significant influencing factors,and a geographically weighted regression model was further constructed to reveal the spatial differentiation characteristics of the effects of these factors. The findings indicate the following:(1)Takeaway consumption space exhibits dual agglomeration features of"center-periphery"and"horizontal,multi-center"structures,forming a three-level agglomeration center.On the one hand,agglomeration intensity decreases concentrically outward from the core area of the main city to the south bank of the Yangtze River(reaching its peak at Xinjiekou).On the other hand,multiple relatively independent,scattered third-tier centers have formed in peripheral areas such as Qiaobei and Xianlin,reflecting a networked structure.(2)There is substantial spatial overlap between food delivery consumption agglomeration centers and physical business centers,but notable discrepancies exist in their distribution patterns and hierarchical systems.The physical business center is a balanced multi-tiered layout,whereas food delivery consumption agglomeration centers show a highly centripetal concentration and distance attenuation features,which are attributed to their differences in functional positioning,business mode,and consumer group characteristics.(3)Traffic convenience(such as road network density and number of subway stations)and the number of surrounding facilities(such as health care,leisure and entertainment,business housing,science,education,culture,and shopping and consumption facilities)positively affect the spatial agglomeration intensity of takeout services but exert negative impacts on land use mixing. The impact of different factors has spatial heterogeneity.For instance,business and residential facilities promote the spatial agglomeration strength of takeaway services in the main urban area the most,but this effect weakens toward the outer suburbs.Science,education,and cultural facilities can promote the spatial agglomeration strength of emerging areas like the Jiangning University Town strongly,but they exhibit a suppressive effect in the main urban area due to the convenience of physical dining options.This reveals the"substitution effect"or"complementary effect"of digital technology in different regions. Theoretically,this study reveals the dialectical unity of Central Place Theory and Central Flow Theory under the influence of digital technology.Practically,it provides an empirical basis for optimizing urban spatial planning and governance.It is suggested that a"physical-virtual"dual-dimensional commercial center system be constructed and that the complementary and coordinated development of physical business centers and food delivery consumption agglomeration centers be promoted.Future research could further carry out comparative analyses based on food categories,long-term evolution,and model refinement.