Research On Urban Park Landscape Design From The Perspective Of Stormwater Management

Stormwater management has been an important research direction in urban construction and development since the 20 th century.Unreasonable urban construction leads to the intensification of urban hydrological problems and affects the healthy development of cities.Therefore,this study tries to take Binjiang Park of Hexi New City of Nanjing as the research object to study the park design planning under the background of stormwater management.This study first established the relevant concepts and theories of stormwater management and urban park design,and then analyzed the design schemes of six parks,including Fuji Ward Park,Tanner Springs Park in Portland,Beijing Olympic Park,Harbin Qunli Stormwater Park,Zhejiang Quzhou Luming Park and Ningbo Xinghu Park.The core technology of stormwater management lies in the development of low-impact stormwater management technology.The core concept is the concept of natural circulation,and decentralized stormwater management equipment is adopted to promote natural infiltration,filtration and secondary utilization of precipitation.Decentralized sponge construction is based on the low-impact development of rainwater management facilities,the whole process of rainfall monitoring and decentralized treatment,from the rainfall source infiltration,water storage equipment,infiltration of underground rainwater transport to filtration equipment to terminal rainwater storage equipment reasonable combination and effective management control,to achieve the regulation of rainwater surface flow,improve the quality of water resources.To achieve the goal of protecting the ecosystem,etc.This study also summarizes the problems existing in the current urban stormwater management,and puts forward the design objectives,design principles and design methods of stormwater management in urban parks.This study believes that the design objectives of stormwater management in urban parks should include surface runoff pollution control and flow control,ecological rainwater resource utilization,and follow the principles of ecological development,practical technology and organic integration.The design method mainly includes three aspects: integration of water circulation system outside the park,rational planning and utilization of existing natural resources,and restoration and improvement of ecological water system based on runoff design.On the basis of the above theoretical research,based on the landscape design elements of storm flood management,this paper takes Riverside Park of Hexi New City of Nanjing as the research object,and divides the park into functional areas such as fresh water source area,plant scenery zone,low-carbon architectural complex,comfort and leisure area.The roads in the park are divided into one,two and three roads to focus on the scenic spots and enhance the ornamental value of the park;Design permeable pavement to improve surface runoff permeability;Design vegetation buffer zone,recessed green space,grass ditch and other vegetation landscape.The innovation point of this study is to carry out a targeted urban park landscape design with stormwater management function based on the current situation in China.The value of this study is to provide theoretical support for urban park construction and urban stormwater management,so as to promote the modern development of urban construction.