| Nowadays,environmental protection and ecological security are increasingly emphasized.Water resources,as an important resource,have gradually entered the field of vision for their sustainable utilization methods and theories.Especially for urban water resources,high-speed urbanization and rapid population growth will lead to a series of problems,such as lack of water resources,serious water pollution,lack of rain and flood discharge and water circulation mechanism.Based on the above situation,the sponge city rain and flood management system based on the LID low impact development measures was born,and the rain garden as a rainwater utilization measure of LID low impact development measures to solve these problems,put forward specific and easy implementation plan.Based on the Fenghe Waterfront Park project as a practical basis,takes all kinds of rainwater gardens in Fengxi new town as the research object,combined with the domestic and foreign cases and literature,and combs and sums up the problems and valuable experiences in the process of practice,and finally applies the study to practice.In.First of all,through consulting books,studying monographs and listening to lectures,the theoretical basis of rainwater garden,key technical points and its function,structure and classification are deeply studied.Secondly,four domestic and foreign successful cases were studied by literature.The experiences and shortcomings in the cases were summarized,and their own views were put forward.Thirdly,the field investigation,ecological measurement and data analysis of the rainwater garden in Feng Xi new town are carried out.The improvement effect of the rainwater garden to the urban environment is analyzed from a quantifiable point of view.Finally,combined with the actual case,we put forward the strategy of adaptive design of rain garden in Xi’an area.Finally,it is concluded that the rainwater garden is not only suitable for the extension of the green space in the urban area,but also suitable for combining withthe urban water system as the view of the water system filter belt. |
