Landscape Characteristics And Database Construction In Urban Public Parks And Road Green Space Of Guiyang

As an indispensable element in the construction of urban green space,plants create ever-changing plant landscapes through the combination and configuration of different species,which is of great significance to maintain the basic ecological process of the city and to soften the relationship between natural landscape and artificial landscape.234 plant landscape units were selected from 5 urban parks and 28 road green Spaces of Guiyang in this study,full use of the knowledge of Synecology,botany,landscape aesthetics,forestry,landscape architecture and other disciplines,and combining the methods of literature research,field investigation,qualitative analysis and quantitative analysis,such as plant community character,plant species diversity and build plants database and other aspects of the research work,to explore the problems and landscape characteristics of phytocoenosium in urban public park and road green space of Guiyang.It is expected to provide a reference basis for better construction of Guiyang urban garden green space,creation of sustainable plant landscape and improvement of plant information management level.The main conclusions are as follows:(1)Study on the characteristics of plant community1.Abundant plants composing in urban public parks and road green space of Guiyang.According to the survey,there are 123 families,315 genera and 391 species of vascular plants in the study region,including 17 species of ferns,15 genera and 12 families,14 species of gymnosperms belonging to 12 genera and 7 families,and 360 species of angiosperms belonging to 288 genera and 104 families.2.The rationality needs to be improved in the Ratio of plant life-form.Perennials(136species),trees(99 species)and shrubs(79 species)were the dominant life forms(80.31%),while woody and grassy lianas(24 species)were the least,accounting for only 6.14% of the total species.There were 97 species of evergreen and 96 species of deciduous in woody plants,and the ratio of evergreen to deciduous plants was 1.01:1.In terms of plant species source,there were 259 native plant species,63 alien plants from China and 69 alien plants from abroad,accounting for66.24%,16.11% and 17.65% of the total species,respectively.3.Plants,in the study region,with high ornamental value.There were 217 species of flowering plants,89 species of fruit plants,65 species of leaf plants,17 species of shape plants and 10 species of rhizome plants.Then the application of color-leaved plants also further enriched the diversity of plant landscape.In the color of ornamental plants,the flower plants are mainly white,and the leaves and fruit plants are mainly red.In terms of ornamental months,the flowering period was mainly distributed in late spring and early summer,followed by autumn and winter at least.Fruiting stage was mainly distributed in autumn,followed by summer and at least winter,among which there were no cultivars with perennial ornamental stage.4.Trees,in the study region,mostly in the young stand stage.The height of trees is mainly in the range of less than 10 m,and the DBH is generally in the range of less than 20 cm.The overall health status of plants is at the second level(good)or above,and the number of excellent and good plants accounts for more than 70% of the total number of plants,and the overall health status of plants is good.5.The hierarchical structure of phytocoenosium is still at the weaker level in urban public parks and road green space of Guiyang.Among the 120 plant community plots,there were 28 plots with single tree community and no tree layer,accounting for 23.33% of the total number of plant communities in the park.There are 61 similar road green land,accounting for 53.51% of the total road sample land.In terms of vertical structure characteristics,the ratio of forest layer of plant community in 55 green parks was outside the reasonable range,accounting for 45.83% of the total quadrats.Of the 114 green plot plots,63 plots belonged to two-layer structure such as arbore-shrub,arbore-shrub,or single-layer structure of arbore-shrub,accounting for 55.27% of the total investigated plot plots.(2)Studies on plant species diversity1.The dominant species of plants are obvious in parks and roads.Among the dominant species of different life forms,The application frequency and importance value of camphor trees is the most,The shrub is Ligustrum ginseng,and in herb is Liriope spicata.However,the level of plant diversity in park was significantly higher than that in road green space,The richness of plant in the park green space showed the herbaceous layer>the arbor layer>the shrub layer,but the road green space showed the shrub layer>the arbor layer>the herbaceous layer,It reflects the preference of plant allocation at different levels under the influence of habitat of the two types of greenbelt.2.The results of similarity analysis of Jaccard diversity index showed that the similarity degree of plant species among the five urban parks is low,and the application of 28 road plants also has great difference.The similarity degree of plant species between the park and road is not high,and the heterogeneity degree of plant landscape in Guiyang is large.(3)Construction of Plant DatabaseA distributed online retrieval platform was built in the form of Web to record in detail the species,ornamental features,application cases and academic achievements of commonly used garden plants in parks and road greenbelts of Guiyang.It can effectively solve the problems such as the inconvenience of storing and searching the original paper data recorded in the traditional plant survey,and can dig the data more deeply.It provides a new idea for the secondary development of the urban garden plant data information.