Landscape Design Of Rainwater Utilization In Chengdu Campus Of Sichuan Agricultural Uniersity

In the rapid development of global urbanization,the rapid increase in urban area led to the rapid increase in the area of the Earth's impervious area,the original underlying surface composition was greatly damaged,the rapid increase in urban population,urban climate conditions continue to deteriorate,and brought A series of hydrological effects.Climate change,urbanization and land use,surface cover change makes the water cycle process has changed greatly.The "rain island effect" leads to the increase of the probability of extreme precipitation in the city,and the surge effect of rainwater runoff caused by the hardening of the urban surface is frequent.In recent years,the concept of sponge city,put forward to emphasize the promotion of urban drainage system should give priority to the limited rain to stay,give priority to the use of natural forces drainage.In the sponge city construction,the landscape design if the rainwater collection and utilization of good natural precipitation,surface water and groundwater system,coordination of water supply,drainage and other aspects of water recycling,and consider its complexity and long-term,the maximum To achieve the accumulation of rainwater in the urban area,penetration and purification,from the source to reduce rainwater runoff,will effectively solve the urban waterlogging brought about by the "sea" phenomenon and other urban ecological environment.Campus as a city subsystem,but also flooded the troubled.In the background of sponge city construction,the author conducts field investigation and analysis on Chengdu campus of Sichuan Agricultural University.Through the research on the development of rainwater utilization technology and theory,the paper summarizes and summarizes the excellent cases of rainwater utilization landscape design at home and abroad.The use of the design of the site of the use of rainwater landscape design,and the theory and summed up the experience of meticulous,especially optimized,concrete practice,sub-regional Sichuan Agricultural University Chengdu campus roof,landscape square,green space,road surrounding,The construction of the surrounding rainwater landscape design,intended to solve the problem of rainwater drainage on campus,so that the campus gray facilities ecological,green,and improve the value of rainwater resources,reduce water waste.In this study,the combination of landscape architecture,landscape ecology,botany,urban planning,urban water supply and drainage,urban hydrology and other multidisciplinary theoretical knowledge,through domestic and foreign urban rainwater harvesting and utilization technology and theory to extract the rainwater landscape design for the campus Way,combined with the natural conditions of the site and water resources,the use of field investigation,case analysis,software mapping and other methods to explore suitable for Sichuan Agricultural University Chengdu campus rainwater landscape design.