线上和线下生活服务设施可达性及其协调关系——以生鲜果蔬店铺为例

作为智慧城市的重要组成部分，“新零售”得到蓬勃发展，提供当日配送服务的“新零售”深刻影响了城市生活服务的可获取性和时空可达性。本文以南京中心城区为例，运用两步移动搜索法、耦合协调度模型等方法，探究提供当日配送生鲜果蔬服务的店铺和传统生鲜果蔬实体店空间分布特征，分析线上和线下生鲜果蔬店铺的可达性及空间协调关系。研究发现，线上生活服务遵循技术扩散假说，强化了中心城区的生活服务集聚，同时线上生活服务集聚和可达性仍受实体地理空间约束；线上生活服务有悖于效率假说，对传统生活服务的空间分异具有加强作用，整体上没有提高生活服务的供给效率和空间公平性。研究结果可为新零售影响下城市生活服务设施的配置优化提供科学依据。

ACCESSIBILITY AND COORDINATION RELATIONSHIP OF ONLINE AND OFFLINE LIVING SERVICE FACILITIES:A CASE STUDY OF FRESH FRUIT AND VEGETABLE STORES

New retail is booming as an important part of smart city. The "new retail" which provides instant delivery service (IDS) has affected the accessibility of urban living service and space-time accessibility in many aspects. Taking the central city of Nanjing as an example, this paper uses the two-steps floating catchment area (TSFCA) method and the coupling-coordination model to calculate the accessibility of online and offline fresh fruit and vegetable stores and analyze the spatial coordination relationship between them. It's found that the online life service obeys the innovation diffusion hypothesis, which strengthens the agglomeration of living service facilities in central urban area. At the same time, the agglomeration and accessibility of online living service facilities are still constrained by the physical geographical space. Online living service is contrary to the efficiency hypothesis and strengthens the spatial differentiation of traditional living services. On the whole, it doesn't improve the supply efficiency and spatial fairness of living services. The results can provide a scientific basis for the configuration optimization of urban living service facilities under the background of Internet development.