| As an important public space in the city,the urban green space system is an important part of the construction of urban environmental quality,and it also affects the vital interests of urban residents.In this project,through relevant researches on urban green space systems at home and abroad,it is determined that the important content that affects the layout of urban green space systems includes park green space,protective green space and regional green space closely related to urban environmental quality.Through the study of landscape ecology theory,landscape connection theory,oxygen source and oxygen balance theory,as well as the summary of urban construction experience in Paris,Moscow,Hong Kong,etc.,the key elements of the key research on the layout of urban green space system have been clarified,including the urban green space system.Structural green space and ventilation corridors where overall ecological benefits play a key role;green space system network research that significantly improves the overall benefits of green space;from a human perspective,research on park green space balance that affects the social benefits of green space system research.Through the analysis and research of the above content,three layout optimization strategies are obtained.The first is to ensure the ecological functions of structural green spaces and ventilation corridors,including the construction of regional composite ecological spaces,the planning of country parks according to local conditions,the standardization of construction land function guidance,and the formulation of four specific strategies for rural unit planning.The second is to strengthen the construction of the urban green space system network,including four specific strategies to protect the junction zone between various natural systems,strengthen the node function of the block green space,highlight the linking function of the road greening,and improve the greening construction standard of the main road.The third is service-oriented to improve the balance of urban green space layout,including three specific strategies: rationally dividing urban green space demand levels,rationally arranging urban green space construction,and improving urban green space service coverage.Based on this,the layout optimization plan of the central urban green space system "corridor wedge + urban green network" is formed,which has certain reference value for the construction of the central urban green space system in Shenyang. |