Special Column: High-quality Development of Digital Economy, Regional Culture and Tourism
WANG Jiahong, YUAN Yuan, YANG Hongbo, SHI Jinlian, ZHOU Maolin, HUANG Xiankai
The flow of ecotourists from urban to suburban areas reflects urban residents' geographical preferences, demands, and selection behaviors regarding ecotourism in suburban settings to a certain extent. Scientifically understanding the network structural characteristics of this flow is crucial for optimizing the allocation of ecotourism resources, developing heterogeneous linkages, and facilitating networked development pattern in the suburban areas. This research took Beijing as a case study area and used mobile phone data to track the ecotourism footprints of residents from the urban center to suburban areas. Drawing on the social network theory, we established an evaluation indicator system for the ecotourist flow network in the Beijing suburbs and integrated it with spatial analysis to investigate the spatial distribution characteristics of core-periphery, key nodes, and cohesive subgroups, as well as their aggregation-linkage patterns. The research findings indicated that: 1) The ecotourist flow network in the suburbs of Beijing exhibited a distinct hierarchical structure. Core nodes (78) demonstrated a spatial differentiation pattern characterized by "denser flows in the inner-suburbs and sparser flows in the outer-suburbs, and denser flows in the west and sparser flows in the east", forming a "two-eight dependence" linkage mode characterized by localized agglomeration and weak diffusion towards the edge nodes (95). 2) The key nodes (34) had significant advantages in degree, closeness, and betweenness centrality, with strong ecotourist flow connections among them and frequent bidirectional interactions, and forming aggregation-linkage patterns such as "loop-belt", "point-axis", "horizontal integration", and "vertical integration". Collectively, these patterns constituted a dynamic cyclic system radiating throughout the suburban areas of Beijing. 3) The cohesive subgroups (4), guided by the principle of geographic proximity, exhibited linkage patterns of "multi-core agglomeration and vertical diffusion", "single-core agglomeration and layered diffusion", "dual-core agglomeration and horizontal diffusion", and "chain-like agglomeration and clustered diffusion". These patterns incorporated various natural elements such as cropland, forest, grassland, and water. Based on these findings, we put forward recommendations to explore the integrated development path that leverage the complementary advantages of core and neighboring peripheral towns and townships, enhance cooperation between key nodes, stimulate spillover effects to other nodes, and promote the formation of a networked supply pattern that seeks differentiation of nodes with similar resource endowments and full linkage between those with different resource endowments.