Investigation And Study On The Artificial Plant Community In City Exhibition Garden Of Guangxi(Wuzhou) Garden&Horticulture Expo Park

As a new urban park,Garden Expo Park is more ornamental and artificial than urban park green space.Whether the artificial plant community is scientific and reasonable needs a long time to verify.How to build a sustainable plant landscape and a scientific and reasonable artificial plant community are the problems to be solved to improve the quality of urban plant landscape.The paper adopts the research methods of field investigation,literature research,statistical analysis and comprehensive induction,and takes the artificial plant community within the design red line of the urban exhibition garden of Wuzhou Garden Expo Park as the research object to explore the composition characteristics,quantitative characteristics,community structure characteristics,community species diversity,plant landscape of different theme parks,etc,And summarize the plant configuration mode and put forward optimization suggestions for the explored artificial plant community.The survey results are as follows:(1)In terms of community species composition characteristics,244 species(including wild species)belonging to 190 genera and 78 families of plants were recorded in the sample plot of artificial plant community in the urban exhibition of Wuzhou Garden Expo Park,mainly angiosperms,and the plant species were concentrated in oligospermaceae or monospermaceae.There are many wild herbs and a certain number of alien invasive species.The ratio of evergreen tree species to deciduous tree species is 4.48∶1,and large proportion of evergreen trees.The plant community lacks interlayer plants,and the application of three-dimensional greening is less.The ornamental characteristics of plants are mainly foliage and flower plants,with various types but uneven application.The plant community is generally characterized by evergreen broad-leaved forest,and the stand density is at the lower middle level,mainly sparse forest or medium canopy forest.(2)In terms of the quantitative characteristics of the community,the ornamental degree of plants is more important in the selection of plant species in the urban exhibition garden.The dominant species in the arbor layer,shrub layer and herb layer of different theme parks are different.The most obvious difference in species application lies in the arbor layer.(3)In terms of community structure characteristics,the artificial plant community in the urban exhibition garden of Wuzhou Garden Expo Park is composed of three structural types: "arbor-shrub-grass","arbor-grass" and "shrub-grass",mainly the vertical structure of arbor-shrub-grass.In the classification of plot types,there are four types: block and patch plant community,building peripheral plant community,hygrophyte community and aquatic plant community.The block and patch type has the most plant community and the least aquatic plant community.(4)In terms of community species diversity,among different vertical structures,the plant community species diversity of arbor-shrub-grass structure is the best,and the arbor-grass structure is the worst.In different plot types,the plant communities around the periphery of the building and the plant communities in independent space have better species diversity,and the aquatic plant community has the worst.Among different theme parks,Lingnan cultural park has the best community species diversity and seashore style park is the worst.Compared with 14 urban exhibition parks,the plant community species diversity level of Nanning garden is the best,while that of Wuzhou garden and Fangchenggang garden is poor.(5)In terms of plant landscape,the plant landscape of Lingnan style park is full of flowers in four seasons,the plant landscape of landscape ecological park is natural ecology,the plant landscape of characteristic Ethnic Park highlights the landscape pastoral style,and the plant landscape of seashore style park is full of tropical coastal city flavor.(6)In terms of plant allocation mode,three basic allocation modes and eight specific allocation combinations of artificial plant communities in Wuzhou Garden Expo garden urban exhibition garden are summarized.(7)In view of the deficiencies found in the landscape and regional culture of plant communities are not obvious,the tourism service function is poor,the plant configuration is unreasonable,the popularity of culture and education is not strong,and inadequate maintenance management,put forward suggestions for reasonably increasing trees,avoiding blind configuration,improving the guidance of tourism science popularization and specifying targeted management schemes.