Survey Of Colorful Leafy Tree Species Resources In The Main Urban Area Of Yulin And Its Application Evaluation

The level of urban landscaping is an important symbol reflecting the quality of the city,its image and regional cultural characteristics.In order to protect and reasonably allocate foliage plant resources scientifically and effectively,this study investigates the application of foliage plants in five different types of landscapes and observes their ornamental characteristics based on a comprehensive survey of foliage plant resources in Yulin,and uses a combination of expert consultation scoring and hierarchical analysis to determine the weights,and establishes a comprehensive ornamental rating system for foliage species in Yulin.The evaluation index system was established,and the ornamental grade was classified according to the evaluation results.The main conclusions are as follows:1.311 species of foliage plants,belonging to 141 genera in 58 families,appear in the green space survey sample sites in Yulin area.The 111 species of tree foliage accounted for36% of the total,128 species of shrubs accounted for 41% of the total,65 species of herbs accounted for 21% of the total,7 species of vines accounted for 2% of the total,and the dominant species were Rosaceae,Gramineae,Leguminosae,etc.After years of field investigation and collation,we have initially calculated that there are 159 species of foliage trees in 39 families and 72 genera in the main city of Yulin.2.Combining with the current situation of garden application of foliage species,foliage species with high rating such as dry willow,golden-leaved elm and apricot have been widely used in gardens and can be used as an important resource for garden promotion and application;Gantt chart function to draw 57 kinds of autumn foliage plants in Yulin ornamental weather map,through this intuitive form of chart to show the changes of the weathering period of each plant,as well as the overlapping,following and matching relationship between various plant ornamental phase appearing periods.The HSB color model was used to create a color view of the collected color data to visually express the leaf color composition and dynamic changes of autumn foliage plants.3.Based on the results of the survey,the 71 foliage species were comprehensively evaluated and graded according to the hierarchical analysis method,with 22 species having high comprehensive application value,21 species having high comprehensive application value,18 species having average comprehensive application value,and 10 species having relatively low comprehensive application value.4.Combined with the field survey records and evaluation and analysis results,the main problems in the application of foliage species in the garden of Yulin City are insufficient plant species and varieties,insufficient local characteristics,unreasonable maintenance and management,poor adaptability of the plants themselves,and relatively simple forms of plant landscaping.5.Through the analysis of the survey data,combined with the development trend of the future habitat construction in Yulin city,improvement strategies are proposed for the future construction of urban gardens in Yulin city: strengthening the domestication and utilization of native foliage species;improving the maintenance level of garden plants;and proposing an effective configuration form for foliage plants to play the landscape and "colorization The effective configuration form for foliage plants to effectively perform landscape and"colorization" functions is proposed.