The Researchon Thescene Of Road Greening Plant.in Changsha City

Urban roadgreening is an important part of urban greening,Through investigation and analysis of urban road greening plant type, application form, application frequency, and ornamental in Changsha, completing the " urban road stereo greening plants list in Changsha", and using analytic hierarchy process to establish landscape evaluation system for urban road greening in Changsha through analysis of three aspects of ecological quality, social benefits, and ornamental features, finally according to evaluation results, we propose mention quality transformation recommends on urban road greening in Changsha to provide reference for related research.The results are as follows:1. In the 150 samples of this survey of Changsha urban road greening, using 131 plants species (including varieties, subspecies and varieties), belongingto 60families103 genera,2families 2 genera2 species of2. Pteridophytes,5families 7genera of Gymnosperms,53 families 94 genera 1223. species of Angiosperms, angiosperms is included in 100 species of4. dicotyledonous and 22 species of monocotyledon.5. Urban road greening in Changsha include trees, shrubs, herbaceous, vine and bamboo, application quantity of shrub is the most, followed by grasses, trees, vines, bamboo.6. application mode of urban road greening in Changsha includes building along the street greening, vehicle belt greening, bridge greening, garden sketch greening, public facilities greening, slope greening, road attached green space greening.7. The investigation showed that the ornamental variety of urban road greening in Changsha is abundant, such as flower plants, foliage plants, fruit plants, view form plants, dried plants, composite view form plants and no obvious ornamental view form plants.The highest proportion is the foliage plants, accounted for 48.09%, the second is flower plants, accounted for 29.00%, the third is composite view form plants, accounted for 14.50%, the forth is no obvious ornamental view form plants, accounted for 9.92%, view form plants and dried plants are both 3.05%, the lowest proportion is fruit plants, accounted for 2.29%.8. Using the analytic hierarchy process (ahp) construct the evaluation model of greening plant landscape, comprehensive evaluate the 20 samples of greening plant landscape. Landscape comprehensive quality decline in sequence from dividing stripe greening, frontage greening, landscape architecture and greening of public facilities to slope greening.