社区生活圈视角下公园绿地与生活配套设施的空间竞合演化特征OACHSSCD

The spatial utilization of resources between park green spaces and living service facilities exhibits a co-opetition relationship,and understanding its evolutionary pattern is crucial for building high-quality,livable community life circles.Based on the niche breadth,niche overlap index,connectivity,and comprehensive competition index models,this study constructs a spatial co-opetition correlation system.This framework enables the measurement of spatial resource utilization and overlap to identify the basis for their co-opetition,and further facilitates the characterization of associative relationships and the quantification of competitive dynamics.Using POI data from Nanjing's central urban area from 2012 to 2024,this study systematically examines the evolution of spatial resource utilization and the dynamic interactions of co-opetition between park green spaces and living service facilities.The results show that:(1)The niche breadth of park green spaces has continuously increased,with their spatial pattern shifting from a single-core concentration to a more balanced multi-core distribution.Living service facilities have gradually evolved towards a multi-polarized core structure,highlighting their spatial differentiation.Through differentiated positioning and multi-core configurations,the two have significantly mitigated direct conflicts in spatial resource utilization,forming an adaptive spatial structure aligned with urban development.(2)The overall connectivity between park green spaces and living service facilities is significantly positively correlated,with steadily strengthened associations.Areas of strong positive linkage have expanded outward from the historic cultural clusters of the old city,demonstrating a gradient optimization model of"core intensification-peripheral penetration-quality upgrading in lagging zones".This spatial process is driven by the dual engines of historic-cultural clusters and the riverfront ecological corridor,and is implemented through spatial-nesting layouts in peripheral areas and targeted adaptation strategies in lagging zones,thereby enhancing the efficiency of the synergistic network.(3)The competitive landscape exhibits dual differentiation in facility type and spatial pattern.In the urban core,spatial resources are highly constrained and their functions are strongly integrated,leading to localized hotspots of intense competition;whereas in areas with more abundant spatial resources,spatial adaptation strategies help alleviate potential conflicts and achieve functional complementarity with weakened competition.This study deepens the understanding of spatial co-opetition evolution between park green spaces and living service facilities within the community life circle,providing scientific support for their coordinated optimization.