Investigation And Optimization Of Plant Communities In Baishawa Park,Shenzhen

With the advance of urban construction,more and more natural,semi-natural plant communities are gradually missing,and people are increasingly eager to close to nature.For people's needs,the development and construction of urban parks should focus on retaining the original ecological plant community,and create a near natural plant community.In this study,the plant species composition of 22 plant communities in the main areas of the coastal area of the dam area was analyzed by basic statistical analysis,such as the ratio of the plant species composition,the level,the life type,the coverage,the ratio of the zonal plant and the foreign species.The total number of trees,shrubs and herbs of 11 plant communities,the total height of the community,the total average diameter at breast height and the average coverage,the composition of the dominant species were investigated and analyzed statistically.The distribution of seven major plant communities in Baishawan Park area,the structural characteristics of plant community,and the index of plant diversity,richness index and evenness index were investigated and analyzed in detail.At the same time,based on the constituent elements of plant landscape,the landscape effect of plant community in Baishawan Park was studied by literature and theory,investigation and analysis,and the existing problems of plant community were summarized.It aims to provide scientific basis and theoretical reference for the planning and construction of the plant community landscape and the protection of the ecological environment in the area of Baishawan Ecological Park.The results of this study are divided into the following three parts:Through the actual investigation,the basic data of plant community in the dam area were obtained,and the characteristics of the community structure were analyzed and compared.The results show:There are 318 species of plants belonging to 97 families and 223 genera,including 89 species of trees,118 species of shrubs,88 species of herbaceous plants and 24 species of vines,accounting for 14.5% of Shenzhen vascular plants.Plant resources accounted for 79%?The plant life is mainly evergreentrees,evergreen shrubs,and shady shrubs shrubs ratio imbalance.From the dominant species,the dominant species at each level of the dam area were more uniform.The dominance of the tree layer was higher than that of the shrub layer and herb layer.The species of the trees in each community was quite rich,and the dominance of the dominant species was not obvious.This is conducive to the composition of tall forest plants,but also conducive to the composition of plant diversity.And the area is very different from the plant species in Nanshan District,Hong Kong and coastal green space of Shenzhen.From the characteristics of community structure,the comprehensive value of plant community structure were higher than those in Nanning urban green space and Shenzhen coastal forest greenbelt.Based on the above analysis,it is shown that the ecosystem of the region is abundant and the zonal plant resources are abundant,which can provide the template for the zonal plant resource and community structure of Baishawan Park.2.A total of 185 species,90 families and 162 genera of the plant community in the area of Baishawan,including 40 species of trees,95 species of shrubs,50 species of herbs.Accounting for 8.4% of the 2200 species of vascular plants in Shenzhen,accounting for 58.2% of the 318 kinds of plant species in the Guangguang area,which is obviously higher than the existing garden plant species in coastal green space of Shenzhen.From the characteristics of community structure,the average coverage and Nanning and Guangzhou surrounding urban green space,in the middle level?average diameter,average crown compared to Nanning is little difference,it is in a moderate low level compared with Guangzhou.May be part of the community is still in the early growth and development.From the species diversity plant,the plant diversity index of the region is located in the middle of the city park in Shenzhen level.From the analysis of the plant landscape effect of each district,the plant morphology changes rich,plant growth lush,gives the feeling of natural beauty.Some of the main shortcomings are:lack of seasonal changes,lack of recreational space.3.Based on the analysis of the plant community in the dam area,the zodo plant species were summarized,and the ornamental species with high ornamental characteristics were sorted out and their ornamental characteristics were analyzed.At the same time,six typical typical zonal community structure models aresummarized,which are divided into two kinds of terrain and topography.This paper puts forward some suggestions on the ecological problems of planning and construction of Baisha Bay Park,the protection and utilization of plant resources and the construction of landscape.It aims to protect the plant community landscape design and the ecological environment in the area of Baishawan Ecological Park,and providing theoretical reference for the construction of ecological parks around the country.