Investigation and Analysis on the Plant Landscape of Urban Roads in Nanchang City

Field investigation of the plant landscape of 31urban arterial roads,8overpasses,and 2traffic islands in the Nanchang city were conducted,greening plant species were investigated,the configuration of the plant and plant diversity were analyzed.The results showed that there were 132species from 60families and 101genus in the above greenspace, which included 56arbor tree species,48shrub species,and 28herbaceous.The highest application frequency for the seven species of shrubs in the order:Cinnamomum camphora(82.93%)Loropetalum chinense var.rubrum(73.17%) Pittosporum tobira(60.98%)Osmanthus fragrans,Elaeocarpus sylvestris,Rhododendron simsii Planch.,and Photinia serrulata(48.78%).The ratio of evergreen and deciduous tree species was 1.21∶1,and their number ratio was 28.4∶1. The ratio of arbor and shrub tree species was 1.17∶1,and their number ratio was 1∶17.5.Research also found that a lot of evergreen dwarf shrubs in greenspace along urban roads were applied in Nanchang,and the flower and foliage plants species was relatively abundant which accounted for 70%.Therefore,from the consideration region features of low carbon,ecological,ancient city of culture,and city landscape,urban road greenspace construction in the future in Nanchang should increase plant species varieties,improved the level of plant landscape design and enhance the plant maintenance and management.