Plant Species Survey And Landscape Evaluation Of Naning Flowers Park

Based on the comprehensive investigation,statistics and analysis of the garden plant species resources of Nanning Flowers Park,53 typical plant community plots were selected according to the classification of plant landscapes,and the landscape quality was evaluated by SBE method and AHP method.The main research results are as follows:1.There are 302 kinds of garden plants in Nanning Flowers Park,belonging to 84 families and 220 genera.Among them,there are 137 species of trees and bamboos,74 species of shrubs,85 species of herbaceous plants and 6 species of vines,accounting for 45.36%,24.50%,28.15%and 1.99%of the total species,respectively.There are 167 species of evergreen trees(79.15%),and 44 species of deciduous trees(20.85%)in woody plants,the ratio of which is about 4:1.The families with multiple seeds include leguminous,gramineous,palm,mulberry,agave and euphorbiaceae.Although the number of species with few or single seed is limited,the planting area of these plants is large.There are 164 species of native plants and 138 species of exotic plants,accounting for 54.30%and 45.70%of the total species,respectively.There are 140 species of flowering plants,151 species of foliage plants,34 species of fruit plants,and 35 species of dried plants,accounting for 46.35%,50.00%,11.23%and 11.59%,respectively.In general,the garden plants in the park are rich in species diversity.However,there are few types of colored leaf plants,fruit-seeding plants,and dried plants.The results of the survey also showed that the park's flower culture has leisure,versatility and science,and there are 178 species of plants with certain cultural connotations,belonging to 68 families and 146 genera.2.The results of plant community landscape evaluation by SBE method show that the maximum of average value of YSBE is 0.662 and the minimum value is-0.937.There are 24 plots with positive YSBE,and the other plots are negative,indicating that the excellent rate of the plant community investigated is low.The results by AHP method show that the maximum mean value of YAHP is 9.396,and the minimum value is 3.734,mainly between 5 and 8.The score of plant community landscape is higher,indicating the quality of the plant landscape in the park is generally good.The 53 plant community plots selected are classified by using CEI,and the number of class ?,?,?,?,and V plant community landscapes account for 9.43%,26.42%,24.53%,28.30%and 11.32%of the total number of evaluation communities,respectively.It can be seen that the plant community landscape of the flower park is generally at the upper-middle level,but the number of plant communities in the I-level landscape with higher evaluation value is relatively small,indicating that there are fewer high-quality plant communities in the flower park3.The SBE method and the AHP method have 42 rankings between 0 and 20,which account for 79.25%of the total number of plant communities.Although the evaluation results are not identical,the evaluation results of the two evaluation methods show a high degree of consistency.Regression analysis was performed on the evaluation results of the two evaluation methods,the main factors that influence the score of the judges are the arbor layer characteristics(C10),plant ornamental characteristics(C1),plant landscape space(C7),plant landscape characteristics(C15),plant landscape hue and seasonal changes of plant communities(C3),explain that the judges mainly focus on the aesthetic function of the plant landscape.In this paper,the landscape evaluation of plant communities in Nanning Flowers Park is carried out by two evaluation methods.The results show that the plant community landscape is above the upper-middle level,but the number of plant communities with high quality is relatively small.4.The results of investigation and analysis show that the plant landscape of Nanning Flowers Park has distinctive features,but there are also some problems such as repeated plant application,high landscape similarity,less application of vines,lack of vertical greening landscape,and insufficient plant culture and excavation.The management of green space conservation is not in place,and the phenomenon of artificial destruction of plant landscapes has been going on as well.In response to these problems,the paper puts forward the following preliminary suggestions:enrich plant diversity,and create a landscape effect with four distinct seasons;strengthen the use of vines to create a vertical space aesthetic;excavate the cultural connotation of flowers,and strengthen the function of science education;strengthen the management of plant conservation,and develop practical care measures.