Low Impact Development Of Landscape Plnning And Design

Along with the progress of the city,great changes have taken place in the surface properties of city regions.Because of the surface soil is gradually being impervious area coverage,serious impact on the hydrological cycle in the original city,city area of storm runoff phenomenon is serious,which makes the total area increased runoff,peak flow increases,the peak appeared ahead of time,the runoff variation and a series of problems.At the same time,the city also affect the climate characteristics of the city,brought the city the precipitation event frequency increases and other weather disasters.On the other hand,with the point source pollution has been controlled,the non-point source pollution has become an important issue facing the city water environment protection.China is a serious shortage of drought,the reality of the lack of water resources,water pollution problems to solve urgently.Based on the low impact development research from the perspective of the landscape planning,analyzes domestic and international research on dynamic low impact development planning,and select the successful cases at home and abroad summarized its successful experience.Then using the literature analysis,case analysis,comparative study,interdisciplinary approaches and on-the-spot investigation,the analysis of the process design method of landscape planning and design guiding ideology,development planning and steps,low impact on hydrology,and introduces the design and related infrastructure construction,which provides an effective way for stormwater management in the process of in landscape planning and design.The aim of this study was to establish a low impact development of the global landscape planning and design based on the idea that the White Horse Lake landscape planning and design of Nanjing Agricultural University teaching and research center as an example,from the following 3 aspects:(1)The origin and development of low impact development,describes the low impact development in the domestic and foreign research dynamic,analysis of China's present sponge city theory,comparative analysis of the traditional landscape design and landscape design of low impact development difference.(2)Analysis of the practice of landscape planning and design method based on low impact development,from the guiding ideology,planning methods and steps of hydrological analysis,selection and design,infrastructure and other aspects of emphasis.(3)Combined with the actual case of landscape planning and design of Nanjing Agricultural University teaching and research base of White Horse Lake Center,existing problems through the analysis of site,determine the planning objectives,orientation and philosophy,from the functions,goals,planning area;finally elaborated site drainage planning,flood control planning,the water purification system design,design method effects of the development of landscape planning further demonstration site.