supply and demand Matching and coupling coordination evaluation of cultural ecosystem services in urban park green Spaces: a case study of the main urban area of Chengdu

Objective This study explores the spatial layout characteristics of the cultural services of urban park green space ecosystems, the matching relationship between supply and demand, and optimization strategies to help improve their service effectiveness. Method Taking the park green space in the main urban area of Chengdu as the research object, a supply and demand evaluation index system was constructed that includes the dimensions of supply potential, supply opportunities and resident demand. Combined with coupling coordination analysis, the spatial layout, matching characteristics and coupling coordination level of the supply and demand of cultural services in the park green space ecosystem were explored. Results ①Comprehensive supply shows a clustered distribution characteristic of high in the south and low in the north, while comprehensive demand shows a distribution characteristic of spreading from the urban center to the periphery; ②The supply and demand matching types are mainly "high supply - high demand" and "low supply - low demand", the overall situation is in a low-level equilibrium state and there are many supply gaps; ③The overall coordination of supply and demand coupling is poor, and the highest area is only at a barely coordinated level. Conclusion Through the overlapping analysis of supply and demand matching types and coupling coordination degree, supply and demand optimization strategies for the cultural ecosystem services of the park green spaces in the main urban area of Chengdu are proposed in different regions, providing a basis for improving the efficiency of cultural ecosystem services, improving the planning and management level of urban park green spaces, and ensuring environmental justice.