The Study On The Design Of Mountainous Landscape In Northern Sponge City

In the context of rapid urbanization,mountainous regions are included into the scope of urban development,and mountainous landscape has become a more important part in urban landscape system.The release of 《Sponge City Construction Technology Guide》by MOHURD indicated that Chinese cities have entered a new stage that focus on storm water management and resilient design.This thesis solved the problem of how to design mountainous landscape in northern Sponge City.This thesis studied the history and types of mountainous landscape in China,and explain the design elements of mountainous landscape,features of northern mountainous landscape in China,and the problems of storm water management.Through case study and research of theory in storm water management,the influences by mountainous landform on surface runoff and detention and retention of storm water are concluded.This thesis proposed the goals and principles of mountainous landscape design in northern Sponge City,and provided a systematic method of storm water management design in mountainous areas.The steps are:1.At the early design stage,the design site should be mapped and data would be collected,figuring out the hydrological condition and drainage system,determining the catchment area and underlying surface of design site by digital software,in order to calculate water balance and propose proper storm water management plan.2.The storm water management facilities should be arranged based on the storm water management plan,and fulfill the needs of ecological and aesthetic function.Storm water should be controlled by different types of green infrastructure through source,transportation,and terminal of storm water runoff,in order to slow down the velocity of surface runoff,improve the quality of runoff,and utilize rainwater resource.The selection and arrangement of green infrastructure should take unique mountainous landform into consideration,and use natural,non-engineering construction to solve the problem of storm water management in mountainous area in northern Sponge City.3.In the design process,the effects of storm water management would be calculated by formula or computer simulation software,and used as criteria for testing whether the design meet the requirements and goals of storm water management.The precise calculation and clear diagrams would evaluatethe design quantitatively.Follow up the practical effects after the design is built,and verify the effects of storm water management created by mountainous landscape design through sampling and measurement during rainfall.