The Research Of Southern China Hilly City Rainwater Ecological Network Planning

Under the background of economic globalization,with the accelerating process of China urbanization,the suitable building land decreasing,extensive constuction in the hills and other complex terrain has become the trend.However,due to the lack of systematic hilly planning theory guidance,hilly area of natural ecosystems have been seriously damaged,and greatly hindered the city's health and safety,sustainable development.Therefore,to improve the understanding of natural processes hilly areas,exploring the hilly city planning methods conform to the laws of the natural process of evolution,is of great significance to achieve the sustainable development of the city.This paper integratied of urban planning,landscape ecology,hydrology and other related disciplines,treated the important runoff process of hilly area as the breakthrough point,using Argis technology to simulate the natural process of rainwater colletion,and to analyze its characteristics,on this basis to form the planning and design strategy of rain water ecological network.Through the road design with nature,based on watershed unit vertical planning,landscape of rainwater infrastructure three means,starting from the watershed perspective,building rainwater ecological corridor and wetland node,and communicated with good habitat in hilly patch,finally formated the landscape ecological pattern and safeguard the city's ecological security in hilly area,to meet the natural hydrological cycle space of rainwater,maintenanced the natural process in the greatest degree,reached the urban ecological security,the sustainable development goal,is a new perspective of ecological city planning in Hilly area.The text consists of five chapters:The first chapter is the introduction,which mainly elaborated the rainwater ecological network related research background and significance,domestic and foreign development and research methods and framework.The second chapter is the overview of the basic theory of rainwater ecological network,defines the related concept and the theory are discussed,and further analysis of the concept and connotation of rainwater ecological network,at last summarized features and functions of rainwater ecological network.The third chapter is the analysis of the rainfall process in hilly areas,through studying the hilly areas of precipitation,terrain,river system and vegetation and other affecting factors and summarizing the basic characteristics of the rain runoff,laying the foundation for the further study.The fourth chapter is the construction of hilly city rainwater ecological network,the characteristics of rain runoff analysis as the foundation,through three means to construct the rain corridors and wetland nodes were,protecting the valuable the hilly patch,and to evaluate the network structure,suppletment corridor moderately,finally formed the hilly city rainwater ecological network system.The fifth chapter is the study about the rainwater ecological network planning for Jiangxi Wanzai.Finally,summarized the main content of this study,and proposed the shortcomings and research prospect.