Research On The Reuse Of Rainwater Resources In Yan'an Landscape Design

With the continuous development of modern industry,the speeding up of urbanization,has caused the climate changes,and the abnormal climate change also poses a serious ecological environment problems,caused the changes of urban hydrology environment:underground water level drops,urban water pollution,the rain flood and drought.These vicious changes make people begin to examine and reflect on their own behavior,and the technologies related to the purification,collection and utilization of rainwater are becoming more and more mature.Sustainable landscape,sponge city,green street design,water sensitive urban construction theory of the effective utilization of rainwater resources,increasingly recognized by people,it can not only regulate the rain season to the uneven,cut by the rain caused by natural disasters,such as droughts,floods and other ecological problems;Can solve because of the flood water pollution of municipal wastewater treatment work overtime and avoid untreated water into the river lake pollution problem,is of great gain for the city's water pollution governance;In addition,rainwater as a natural resource saving to form artificial wetland or wet pond to adjust local microclimate,increase air humidity also has important significance.Based on the advantages of rainwater utilization,the use of rainwater is becoming more and more popular in the world,which is highly valued and widely implemented by developed countries in Europe and America.At present,China has grown into the second largest economy in the world.In the process of developing from economic power to comprehensive power,environmental problems have become the main factors that affect China's development.Countries in recent years,therefore,promote the building of sponge cities across the country,to city water problem as a starting point,the comprehensive governance environment as the ultimate purpose of sponge city theory became the guiding rainwater to use the localization theory system in our country.Will sacrifice the environment for economic development mode into environmental and economic help type ecological development pattern,the rain,as a kind of resource utilization,and give play to its economic value,social value and ecological value.Although there is still a long way to go to build sponge country in China,the slogan of sponge city,rainwater utilization and ecological development is well known throughout the country with the strong support of the state.This is very important to popularize rainwater technology and popularize popular science.Europe and the United States developed countries in the rain has made remarkable achievements in the exploration of design and produce a lot of,including low impact development,water sensitive urban theory research results,and through a variety of practice produced a large number of classic cases,combined with the government's propaganda and promotion,the perfection of relevant laws and regulations and the revision,make the ecological,rainwater utilization,sustainable concept spread in public,such as the saving water into the daily life.Compared with that,there is a large gap between the utilization of rainwater resources in China.China has a vast territory and spans multiple climatic zones,so the disparity of precipitation in the south and north has hindered the promotion of rainwater technology in a certain extent.The author thinks that in our country's rain promotion problem,should take the idea first,according to the local conditions according to the local climate to carry on the specific landscape measure adjustment.In this paper,the author lists several ways to use high utilization rate in modern rainwater landscape,and analyzes its advantages and disadvantages and scope of application.In yanan as the research object,explores the possibilities of establishing water landscape in yan 'an,this paper expounds the rainwater to use different time node way of rainwater utilization and rainwater landscape design key points in the planning,research and analyze the province of rainwater landscape and domestic successful cases.In related theory and technology for in-depth understanding,analysis the yenan social and cultural,geographical environment,climate,topography,soil simulated somewhere in the northern suburb of yan 'an small span ditch block set up rainwater landscape area,and step on the whole process of the village water landscape design.Under this premise,the thesis is divided into four parts,first put forward yanan floods and droughts that two water security and the national construction actively sponge city as the research background,which leads to the history and status quo of rainwater utilization,and analyzes the related theory and the significance,content and method of the study.Then analyzed the relationship between each subsystem in the rainwater resources utilization,and analyzes the landscape the commander in chief position in this process,clarify in time as the axis of rainwater landscape design measures and methods,and points out that the design method of landscape planning in the rain.Then it investigates the rainwater utilization landscape in the province,and proves the possibility and feasibility of establishing the rainwater community in yan'an through the investigation of the rainwater landscape in yan 'an.West salty district as the national first batch of sponge city in city has established a complete landscape,sponge to yenan to construction project research improved the rainwater landscape in building a framework of macro and micro level.In the end of the chapter,the author analyzed the possibility of establishing rain water landscape in the area with the same rainfall area as yan 'an.In the end,the factors such as history,geography and social environment were analyzed.The landscape scheme of rainwater community is designed by using xiaoguogou community as the practical object.Based on the existing theory of rainwater utilization and technology on the basis of in-depth study,from the perspective of landscape architecture,in yenan to promote construction of rainwater utilization technology for the purpose,to explore the feasibility of rainwater utilization facilities in yenan residential district.