The Rain Garden Design Research In Guangdong Area

Guangdong area is located in the south coastal areas of China,it is a high temperature and rainy subtropical climate zone,every July to October is the typhoon season in Guangdong area.The typhoon transitions often accompany strong winds and heavy rains or rainstorm and strong convective weather.It is will aggravating flood disaster in flood season of Guangdong region before and after the Dragon Boat Festival,The warm moist air from the south and the old air from the north mixing often causes a large number of concentrated rainfall,may cause flooding.Rain garden is a combination of urban rain flood damage and the landscape design of rainwater management measure,it can effectively collects and deals with the rain,the rain back to the natural cycle.Therefore,the construction of rain garden in Guangdong area can alleviate the severe problems faced by the current rainstorm and flood disaster,and provide new ideas and ways for the rain and flood management in Guangdong area.First of all,based on the global climate warming and urban environment of Guangdong special climate impact as the research background,the rainwater garden development and research status at home and abroad were reviewed and summarized,then The paper clears the rain garden related concepts,researches the rain garden successful cases at home and abroad,summarizes the function of the rain garden and benefit,puts forward the significance of the rain garden.On this basis,the rainfall characteristics of Guangdong area,soil environment,storm runoff,vegetation resources are comprehensive analyzed,then the paper combines with the construction technology,analyses the location,area,the vertical design requirements of the Guangdong area.According to the climate of Guangdong and the rain garden plants selection requirements,summed up the Guangdong area of different types of rain garden plant community configuration mode,and the types of the plants configuration for the Guangdong area the rain garden plants selection provides the reference.The paper also makes a rain garden design in a residential area in Guangzhou as an example,elaborates the design process of the rainwater garden.The example provides a case research for the theory of this paper.Through the above analysis concludes that the rainwater garden development space will be very broad in our country,but it need to be integrated into the layout of the whole city,the formation of the system size is combined with the paper research conclusion,puts forward the energy saving,environmental protection and has automatic management system of rainwater garden is the development mode and direction,and the rain garden forms tend to be more diversified.If the relevant departments support the construction of rainwater garden in the aspects of policy,technology and economy,it will greatly promote the popularization of rainwater garden.