Supply-demand Matching And Optimization For Cultural Ecosystem Services Of Urban Green Space With Health Orientation,Old City District,Jinan

As a quasi-public resource with natural attributes in the city,urban green space can carry various types of health activities of residents,and the cultural ecosystem services provided can affect residents' physical and mental health.Under the new data environment,multi-data integration and fine expression with blocks as research units are conducive to enhancing the humanized control of urban green space planning and management,meeting the transformation needs of high-density urban stock renewal and scientific management,and realizing the positive role of urban green space cultural ecosystem services in promoting health and well-being to the greatest extent.From the perspective of broadening the "health-oriented" urban green space planning and design strategy,the study on the matching of supply and demand of cultural ecosystem services in urban green space at block scale is introduced as an important basis for improving public health benefits and optimizing the spatial layout of green space,which is of great significance for improving the quality of urban environment and promoting public health at human-oriented scale.This study clarified the main theoretical and practical research on the relationship between the cultural ecosystem services of urban green space and public health,and the supply and demand of services.On this basis,the study firstly screens the cultural ecosystem services of urban green space under the guidance of health,and proposes four types of cultural ecosystem services of urban green space under the humanoriented scale,which are obtained under the main driving mode of residents' daily contact and use of urban green space.Based on the way residents obtain and use services,the matching modes of supply and demand for various cultural services are defined,including aesthetic perception services that show " omni-directionally service-non-competitive demand" and entertainment and leisure services,sports and fitness services and aesthetic experience services that show "in-situ service-competitive demand".Secondly,taking Jinan old city district as an example,with the support of multi-source data,the supply and demand level measurement and block scale expression of urban green space omni-directionally cultural ecosystem services and insitu cultural ecosystem services are respectively carried out.Combined with the division of various districts,the location entropy of block units in various districts is respectively calculated,and the matching relationship between supply and demand of two types of urban green space ecosystem cultural services in three aspects of type,quantity and space is analyzed.Finally,based on the results of supply-demand matching,this paper discusses the optimization strategy of cultural ecosystem service layout of urban green space,which is a typical living circle unit of supply and demand differentiation space in different types of districts,in order to provide methodological support and technical approaches for urban green space system planning under the guidance of public health of residents.Through the above research and analysis,it is found that cultural ecosystem services of urban green space in various types of blocks are generally in a state of insufficient supply or redundant supply.Among them,the omni-directionally cultural ecosystem service supply of urban green space in the old city district presents a spatial structure of one core and multiple centers.The main core areas of high service supply are the Gucheng district and the Shangbu district.The blocks with higher service demand are mainly distributed in the north of Jingshi Road and the south of Xiaoqing River in the old city district.The number of blocks with balanced supply and demand is relatively low.Within the 15-minute walking range of residents,the high-level supply of in-situ cultural ecosystem services in urban green space is mainly distributed in the Gucheng and Hero Mountain district,and the matching degree between supply and demand in each district is relatively low.On this basis,this study extracts and summarizes the control status and spatial layout characteristics of green space landscape elements in the typical "15-minute community life circle" unit of the balance between supply and demand of cultural ecosystem services in old city districts.According to the typical units of supply deficit,the paper proposes to build a multi-level urban greenway network in old city districts,coordinate multi-type mountain classification protection and height control requirements of surrounding buildings,and integrate multi-scale urban greenway layout optimization modes.