Investigation And Analysis On The Plants Application Of Roof Garden In Changsha

In recent years,with the continuous advancement of urbanization,the contradiction between human and land is becoming increasingly serious.With the global climate change,resource consumption and other issues,environmental problems have become increasingly prominent.Therefore,it has become an urgent task to improve the urban environment and increase the amount of urban green.The development of horizontal direction has been unable to meet the demand,and the development trend of three-dimensional greening space level is increasingly obvious.It is particularly important to summarize the advanced experience of three-dimensional greening construction,investigate and analyze its shortcomings,and provide valuable guidance for future construction.As an important form of three-dimensional greening,roof garden is of great significance to investigate its plant application status,analyze different site conditions,select suitable plant varieties,and create better landscaping effect.In order to arouse the attention of all walks of life to the roof garden construction and improve the urban ecology and living environment,this paper takes the plant landscape of roof garden in Changsha as the research object,and takes six roof gardens of different styles in Changsha as typical representatives.The roof location includes the roof of buildings such as commerce,residence,villa,enterprise and institution,school,etc On the basis of field investigation and full understanding,this paper analyzes the six roof garden cases from five aspects of geographical location,level grade,design style,construction level and maintenance level,summarizes the advantages and disadvantages,and discusses the plant varieties suitable for the roof garden planting in Changsha area,the extensive management of roof garden plant application mode,and low-level cultivation Nursing management means.At the same time,referring to the relevant information and field investigation,the application status of common trees(deciduous and evergreen),shrubs,vines and herbs in the roof greening of Changsha City,as well as the main configuration forms of roof garden in Changsha City were investigated and studied,and the relevant records were sorted out.In view of the current situation,combined with the climate conditions,the geographical location and environmental conditions of the roof garden,the advantages and disadvantages of the existing roof garden plants application and maintenance were summarized,and the innovative research methods of low maintenance suggestions and plant configuration of roof garden plants were put forward.Finally,from three aspects of plant species selection,plant configuration method and plant construction,the paper puts forward analysis and improvement suggestions for the selection of urban roof greening plants in Changsha area.In the application of roof garden plants,in addition to inheriting the advantages of the past,and in view of the special geographical and climatic environment of Changsha area,the paper puts forward more suitable configuration varieties of roof garden plants in Changsha area,and completes the list of common garden plants in Changsha roof garden.According to the particularity of roof environment,the experience of roof garden greening maintenance is summarized to maintain the greening effect,and put into practice.The feasibility and social adaptability of roof garden are tested in practice,and improved and developed in practice.