Study On Optimization And Promotion Strategy Of Ground Landscape In Xi’an Underground Public Space Based On Near Nature Design

Skyscrapers in Xi ’an rise from the ground,constantly refreshing the city’s height.While the city is striving for jointing growth,it is also making efforts to explore downwards.It has become the future direction of urban development to revitalize underground space resources and tap underground wealth.The rapid expansion of Xi ’an city,the large-scale construction of underground public space,plays a positive role in the rational and efficient use of urban land,but with it,the development of underground public space restricts the landscape effect of the ground,resulting in serious artificial landscape and landscape design divorced from nature.Under the background of urban green development,it is necessary to consider the coordinated and integrated development of underground public space and the ground.Therefore,it is of great significance to study the ground landscape of underground public space combined with near-natural design for the green development of urban public space landscape.First of all,from the research background and the definition of related concepts,the research object and content are clearly defined to find a breakthrough to solve the problem.By studying the basic theory,the research progress at home and abroad is summarized,and the correlation between the ground landscape of underground public space and near-natural design is studied,which provides theoretical and practical basis for the following research.Secondly,it analyzes the ground landscape cases of underground public space at home and abroad,studies the general situation of ground landscape of underground public space in Xi ’an,screens out the research objects according to the actual situation and needs,and uses the "Two-step Road Outdoor Assistant" APP to assist the research,and summarizes the ground landscape problems and shortcomings of underground public space.Then,according to the problems,by exploring the interaction between the ground landscape and the near-natural design of the underground public space,this paper puts forward the optimization and promotion principles and strategies with strong operability: plants: planting in different areas,three-dimensional greening;Water body: rich type,combined with rainwater garden;Topography: the boundary is raised and underground buildings are used skillfully;Garden road: connect the ground in series to strengthen the continuity of landscape;Piece structures: natural materials and bionic design.Finally,the typical ground landscape of underground public space in Happiness Forest Belt in Xi ’an is selected,and the summarized ground landscape optimization and upgrading strategy of underground public space in Xi ’an is verified by an example,demonstrating the operability of the constructed strategy and method.In this paper,problem-oriented,based on the near-natural design perspective,the ground landscape of urban underground public space is combined with the near-natural design,and the strategy of optimizing and upgrading the ground landscape of Xi ’an underground public space is constructed,so as to realize the sustainable development of landscape,achieve the situation that people are close to nature and live in harmony with nature in the city,and create a greener urban public space.It also provides reference value for optimizing and upgrading the ground landscape of other underground public spaces.