Research On Planning And Design Of Urban Wetland Park In Saline-Alkali Region

The wetland environment can play an important role in maintaining the stability of the ecological environment and the richness of species.The wetland resources in the city can not only regulate the regional climate of the urban area,improve the biodiversity of cities,but also provide a place for urban residents to have ecological leisure activities.As an important way to protect and utilize the urban wetland environment,urban wetland parks are an important part of the urban green space system.Saline area wetland,as an important type of wetland,its special site conditions make it necessary to pay more attention to the expression of unique landscapes when planning and designing wetland landscapes,especially how to organically combine the protection of salinealkali wetland environments with the landscape planning and designing.This research try to summarize suitable methods for the planning and designing of urban wetland parks in salinealkali areas,and rationally construct and utilize them on the basis of protecting urban wetland resources in saline-alkali areas.This paper takes the landscape planning and design of urban wetland parks in saline-alkali areas as the main entry point,and summarizes the relevant theoretical overview of urban wetland park planning and design and the research progress at home and abroad through literature review.On the basis of theoretical review,combined with relevant theoretical research and on-site investigations of typical cases to find and solve problems,this paper selected Mingyuehu City Wetland Park in Dongying City,Shandong,Yellow River Island Wetland Park in Binzhou City,Shandong,and Bailang Oasis City Wetland Park in Weifang,Shandong,Sanggou Bay National Urban Wetland Park in Rongcheng,Shandong,and Tianjin Qiaoyuan Wetland Park as the objects of investigation to analyze and summarize the overall planning and layout of the park,the construction of saline-alkali wetland landscape models,the improvement methods of saline environment and plant configuration,then sum up the planning and design uniqueness of the urban wetland park in saline-alkali area compared with the ordinary urban wetland park: pay more attention to the site and use function in the planning and layout of the park;make full use of the uniqueness of saline-alkali wetlands to create characteristic landscapes;use technical measures such as guest soil pressure alkali and regulation of groundwater level to improve the saline-alkaline environment before planting plants,and emphasize the plant's salt-alkali tolerance in planting selection;lay more emphasis on ecology in terms of wetland waterfront environment and so on.It is concluded that some theories that should be followed in planning and design of urban wetland parks in saline-alkali areas,such as landscape ecology theory,regionalist landscape theory,wetland ecological restoration theory,ecological recreation theory and environmental carrying capacity theory.Furthermore,the design methods of urban wetland parks in saline-alkali areas in terms of park layout and zoning,saline-alkaline environment improvement measures,and saline-alkaline wetland characteristic landscape construction are summarized.Under the guidance of the theory and method of urban wetland park planning and design in the saline-alkali area,combined with the current conditions of the site,to complete the landscape planning and design of Guangrao Sunwu Lake Urban Wetland Park.Fully consider the current situation of the site and the surrounding environment in the planning and layout of the park,road traffic,and vertical design,clarify the design goals and planning positioning,and form a spatial layout of “one axis,three zones,six pieces,and multiple points”.According to the current status of the saline-alkali environment,zoning and grading,adopting reasonable technical means to improve the saline-alkali wetland environment,seize the characteristics of the saline-alkali wetland,the whole park is divided into three functional zones: integrated management service area,ecological buffer zone.On this basis,according to the site,surrounding conditions and planning needs,the three major functional areas are divided into six areas including saline-alkaline environment restoration demonstration area,wetland experience area,and popularization of science propaganda and education area etc.;finally,the unique saline-alkali wetland landscapes such as Bailiweidang,Chipeng Red Beach,Qushuihuaxi,and ecological floating islands were created through design techniques.According to site conditions and plant tolerance to saline-alkali landscapes,adjust measures to local conditions,choose and match the plant configuration mode in the saline-alkali wetland environment to give full play to the important role of plants in ecology and landscape.Eventually,the ecological protection and the characteristics construction of saline-alkaline landscape of Sunwu Lake Urban Wetland Park in Guangrao will be realized,and it will be planned and constructed as an urban wetland park with ecological protection,popular science education and beautiful environment,serving the residents of the entire city.