| With the continuous development and construction of human beings,the earth’s water resources have been consumed and polluted in large quantities,and the ecological hydrological system has also been disrupted and destroyed to varying degrees.As a result,issues such as climate change and drought and flood disasters began to increase day by day.At present,based on the exploration of low-impact development concepts and practices,the proposal of China’s "Sponge City" is the best way to solve the problems.This article focuses on the shortage of water and water pollution in urban residential areas,aiming at the LID and construction model under thepolicy of "Sponge City".Starting from the nature of LID,the thesis explores the inherent relationship between rainwater management and landscape architecture.To restore the site to its pre-development hydrological cycle in a sustainable landscape approach.The thesis summarizes domestic and foreign progress and research status of LID through literature surveys and case studies abroad.Combined with field surveys of residential areas in Kunming,analyzes the status and problems of waterscape in residence,and evaluates the research of its value;then,based on the problem-oriented and LID nature as the starting point,propose a construction strategy from a LID perspective from the macro,meso,and micro scales,and finally taking Kunming Yunan Yangguang Cheng as a practical case,analyze and propose specific ideas for waterscape optimization and construction combined with rainwater.The conclusions of the study are as follows:(1)Through surveys of 10 residences in Kunming,we have learned that the current water features of Kunming residential areas are mainly water shortages and poor water quality.The economic value used with CVM is 245.95 million yuan / a.Among them,the monthly income of residents,education level,community waterscape dryness and the maximum willingness to pay(WTP)are significantly linearly proportional.(2)Analyzing with the internal connection of rainwater management and landscape arc hitecture,using macro-strategies as the environmental basis for LID models,and meso-strategies as the treatment structure for rainwater use in residence,and finally address ing them with site design of micro-strategies.Based on the nature of LID rainwater utilization,the thesis proposes three major strategies for ecological restoration from the macro-perspective: transforming terrain,restoring soil,and ecological reconstruction,to simulate the natural rainwater management process;from the meso-perspective,itproposes rainwater management a framework to establish rainwater collection,filtration,and storage systems;from micro-perspective,according to the LID site design principles and problem orientation,the "source control" and "end output" is highly efficient,and further proposes the design strategy of waterscape construction in residences.(3)Based on the analysis of rainwater potential and water balance in Kunming Yunan Yangguang Cheng,and the strategies,the thesis establish a system to carry out rainwater,and make the use of rainwater as well as possible.Through quantitative design of the plan,the thesis finally completed the optimization of the waterscape with rainwater,realizing three effects of living environment economy,environment and society. |
