| Wetland is one of the living environments of human beings.High-intensity manual intervention has changed the mechanism of natural water circulation in wetlands.Rainwater has not been properly treated,resulting in secondary pollution of surface runoff and surface pollutants,which has led to the deterioration of wetland ecological environment.We began to consider the application and research of various stormwater management concepts along with “low-impact development technologies”.In 2014,China released important documents for the construction of “Sponge City”,and the core concept of “Sponge City” is “Low Impact Development” technology.In order to improve the ecological environment,it is necessary to ensure a healthy rainwater cycle in the wetland park.In conjunction with the “ Technical Guide for Sponge City Construction” promulgated by the Ministry of Housing and Construction in 2014,seven technical measures(green roof,permeable pavement,vegetation buffer zone,rainwater tank,wet pond,sinking green land,grassland ditch)were selected.Promote the construction of a rainwater recycling mechanism in the park landscape.Case studies,wet ponds,green space growth,and more and more ditches)combine domestic and foreign case studies to apply the "low-impact development" theory to explore design strategies for rainwater in various types of green spaces.Qianzi Lake Wetland Park is a key project of Jintan District Government and is located in Xincheng District,Planning City,Jintan District,Changzhou City.Its wetland accounts for a large proportion,and the virtuous cycle of rainwater is an important factor affecting the ecological characteristics of wetlands,which is also the cause of the rainwater circulation problem in the greening of the park.The Qianzi Lake Wetland is extremely important.The field survey and software analysis are used to analyze the on-site water supply information of the Changan Qianzi Lake Wetland Park project,and the design and development facilities are combined.The impact of scientific management of runoff is small.Through the application of low-impact development technology and the unique topography of Qianzi Lake Wetland Park,the collection,purification and reuse of on-site rainwater are carried out to a certain extent,completely controlling the inner diameter of the site,and reasonably controlling and creating A good ecological environment,landscape space.As part of the research of this thesis,the application of the low-impact development concept of Qianzi Lake Wetland Park is explored.At the same time,through the research of this thesis,the following conclusions can be drawn:(1)Under the leadership of the low-impact development technology concept,the rainwater cycle of Qianzi Lake Wetland Park tends to be benign.According to the calculation results,when the rainfall is 88.87 mm,the design can make the rain waterzero loss,reaching 100% of the annual total runoff control rate.When the predicted rainfall reaches 110.07 mm per year,the site’s estimated runoff control rate is 83.4%,When the design rainfall is 176.2 mm once in 50 years,the runoff control rate to be solved is 75.5%.which can be drained within 24 hours without flooding.(2)Landscape design of Qianzi Lake Wetland Park the development of low-impact green infrastructure can be combined with on-site terrain to design and integrate the status quo.There are 21 rainwater tanks in Qianzi Lake Wetland Park.The municipal pipeline connection facilitates the secondary use of rainwater;the low-impact green infrastructure,such as grass ditch,vegetation buffer and sinking green space,is combined with site development.On the basis of respecting the principle of sustainable development of ecological planning,this document has achieved low-impact development and established a correct path for effectively protecting the landscape ecology of wetland parks.It is hoped that this study will provide some baseline value for addressing issues related to rainwater cycling in wetland park landscapes. |
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