The Study Of Plant Diversity In Taiyuan City Road Green Space

This paper takes green land of Taiyuan urban road as the research objects, all investigations aim at researching the characteristics of plant diversity in road greenbelts and its driving factors. Research areas include green land of Taiyuan urban road, involved in four areas,95 city roads, line 217 in Taiyuan. Through the sample area within the scope of the plant species diversity of comparative analysis, then use analytic hierarchy process (ahp) in economic development, technology development, policy support and the understanding of the height of the four influencing factors of 9 evaluation factor to carry on the comprehensive evaluation, on the analysis of the taiyuan road greenbelt plant diversity features the most influential factors. The results are as follows:(1) In the investigated 95 road, there are 25 species of trees; 12 species of shrubs,3 species of herb, a total of 40 species; they belong to 21 families,26 genera.(2) Statistical results show that the greening construction of taiyuan urban road green space in the form of pure planting of trees along the majority, in the sample plot survey accounted for 75%. Followed by Multiple levels of arbor, Chinese white poplar bark and Weeping willoe, take up 17% of the survey sample.(3) Sample investigation to the frequency of the highest tree is Chinese scholar tree, the proportion of 58.5%, followed by 34 chinese white poplar bark, maple, weeping willow with compound leaves. In 14 kinds of shrubs, the most highly frequency used kind is concentrated on a few plant species, such as boxwood, its frequency was 23.5%, purple leaf dwarf cherry has frequency 5.1%, purple-leaf plum 6.9% 4.6%, Ulmuspumilacvjinye, plant diversity has certain limitation.(4) According to the results of multiple linear regression analysis, it is concluded that the green belt width, number of green belt, green belt width and road width ratio, road width, always available germplasm resources and the policy, we sort the order of this six influence factors, which influence the characteristics of road greenbelt plant diversity. The order from big to small:the policy, the number of the Green belt, Available germplasm resources, Total width of the road, the ratio of width to Green belt and road, width of Green belt.