Study On The Plant Structure Of The Coastal Region And Landscape Evaluation Of Yangmeikeng Scenic Zone In Shenzhen

As an important part of an urban green space,the urban landscape area is the most concentrated and representative area of urban greenery and biodiversity.As an important component of the coastal landscape,the plant community is a very important database for the construction of the coastal city’s characteristic landscape.In this study,Shenzhen Yangmeikeng Scenic Area was selected as the survey site.Yangmeikeng area is a coastal area that has relatively good ecological protection and has not been over-exploited.It is a very worthy area to study.In this study,the method of plant ecology was applied to the statistics and analysis of the plant species composition in the Yangmeikeng area.The plant diversity at each level was compared.According to the reference literature,AHP was used to evaluate the landscape of plant communities and conduct detailed research and analysis on plantation forests and near-natural forests.The advantages and problems existing in the regional vegetation environment of Yangmeikeng were summarized,and corresponding recommendations were recommended.The solution provides some reference to the ecology of the vegetation in the protected area.The results of this study are as follows:1.Through field research,the basic data of Yangmeikeng area was obtained.Yangmeikeng area is rich in plant species.There are 294 species of plants,belonging to 237 genera of 97 families,including 98 species of trees,84 species of shrubs,94 species of herbs,and vines.13 species.The families that contain a large number of plant species include: Leguminosae,Euphorbiaceae,Moraceae,Rutaceae,Myrtaceae,and Polygonaceae.Among them,there are more plant species such as Schefflera diversifoliolata,Litchi chinensis,Psychotria rubra,Mallotus paniculatus,Blechnum orientale,and Ilex asprella.Compared with the artificial community,the arbors of natural communities are significantly higher than those of artificially planted trees and shrubs,and those of human-intervented communities,and some fruit forest communities.The dominant species of arborous plants in artificial communities are obvious.Litchi chinensis,Schefflera diversifoliolata,Delonix regia,Acacia auriculiformis.2.By collating and calculating the data,statistics were made on the height,coverage,and diameter at breast height for different species in each community,and the dominant species at each level in each community were analyzed,and the plants in each level of each community were analyzed.Calculate the average height,breast diameter,and cover index.It can be seen that the density of plants of various types of plant communities is not the same.The coverage,height,and DBH diameter of the natural community are higher than those of the communities destroyed by disturbance.The plant species of the artificial forest are less,and the dominant species have advantages.Too high a degree results in a lack of flora within the community and affects the landscape effect.3.By comparing the diversity of species diversity at each level of the communities,the diversity of natural communities is mostly higher than that of artificial communities,reflecting the negative impact of human intervention on nature.The richness of plants is also affected by human intervention to a certain extent and is obviously small.Plants affected by habitats also exhibit different differences in species and levels.4.Analytic evaluation of the landscape of plant communities in Yangmeikeng area was conducted using the Analytic Hierarchy Process(AHP).Fourteen landscape assessment factors were selected and a relatively complete evaluation system was established.Fifteen communities were evaluated one by one.Because of the different habitats of the communities and their degree of human interference,there are great differences in landscape quality.90% of the plant communities with Grade I assessment were natural forest communities,and the coverage of shrubs and herbaceous plants were all above 100%,and they were also the communities with the highest indices of plant diversity,evenness,and richness;Plant landscapes with grade II assessment are mainly plant communities that have been subjected to human intervention or have been destroyed;The plant landscape with grade III assessment is artificial litchi forest community,and the plant diversity and evenness and richness index are the lowest in the community.The plants are obviously lacking levels,the dominant species in the community are obvious,and the species is too monotonous,resulting in no characteristics of the overall plant landscape.The overall evaluation results are basically the same as those of the previous analysis of the data.After summarizing the analysis of regional plants of Yangmeikeng,the types of some regional plants were obtained.At the same time,the ornamental higher plant species and their collocation patterns were compiled.It also put forward certain constructive principles and opinions on the optimization and transformation of Yangmeikeng’s regional plants,which provided a certain theoretical reference for protecting the ecological environment of Yangmeikeng and the construction of natural landscape.