Research On Landscape Design From The Perspective Of Ecological Security Pattern

In recent years,with the rapid development of economy and society and the continuous acceleration of urbanization,traditional landscape planning and design have paid more attention to aesthetics,morphology,functional zoning and other factors,and ignored regional ecological security issues during the same period.Ecological security is the cornerstone of regional sustainable development.Only when ecological security is guaranteed can soil be provided for regional stability.As an important way of landscape design,the ecological security pattern improves the scientificity of traditional landscape design by identifying and analyzing the key processes of regional landscape,and effectively promotes the connection between landscape ecology and urban and rural material spaces.Nansha District is located in the geographical and geometric center of the GuangdongHong Kong-Macao Greater Bay Area and the Pearl River estuary.It is the only sea route in Guangzhou and an important pivotal node connecting the urban agglomerations on both sides of the Pearl River estuary with Hong Kong and Macau.From the establishment of the Guangzhou Nansha Economic and Technological Development Zone in May 1993 to February 2019,it has been positioned as a demonstration zone for comprehensive cooperation between Guangdong,Hong Kong and Macao.Due to excellent location conditions and a solid secondary industry foundation,the economic construction of Nansha District has been growing year after year,urban construction land is expanding,and the regional ecological security balance is about to be broken.Therefore,the landscape design research of Nansha District from the perspective of ecological security pattern not only has design research value,but also promotes the city’s smart growth and eco-space protection in Nansha District.This paper mainly adopts theoretical research combined with case demonstration,and uses field research,literature analysis and Arc GIS spatial analysis and other research methods for analysis.First of all,the research has outlined and combed the relevant theories of the ecological security pattern,and collected and preprocessed the required data on this basis.Then the research analyzed the current single factor and comprehensive ecological sensitivity in Nansha District,and identified the main influencing factors and morphological characteristics of different sensitive zones in Nansha District.Third,according to the resource distribution and landscape process in Nansha District,the research constructed a water security pattern,a biodiversity protection security pattern,a soil and water conservation security pattern,and a local cultural and ecological security pattern,and vertically stacked on the basis of the above single ecological security pattern to form a comprehensive ecological security pattern in Nansha District.Finally,this paper combines ecological security pattern with environmental design methods,selects local plots in Nansha district for landscape design,and promotes long-term sustainable development of Nansha district through theory and design practice.