Investigation and evaluation of urban road plant landscape based on the comprehensive index evaluation method
Plant landscape quality of the study area was comprehensively analyzed and evaluated through 10 evaluation factors in the two dimensions of landscape stability and applicability by taking 32 urban roads in Jianye District of Nanjing as the object.Road plant landscape was divided into four levels:grade Ⅰ(excellent),grade Ⅱ(good),grade Ⅲ(medium)and grade Ⅳ(poor).The results showed that the road greening plants in Jianye District of Nanjing were rich in species,the application ratio of ornamental tree species was high,and the application ratio of ornamental tree species in the road green belt was higher than 40.00%.The weight of evaluation factors of spatial hierarchy,seasonal richness and species diversity was relatively high in the comprehensive evaluation of road plant landscape.The highest comprehensive landscape evaluation score was Jiangdong middle road,with a score of 7.21.Among the 32 belts,2 were excellent,accounting for 6.25%;12 were good,accounting for 37.50%;15 were medium,accounting for 46.88%;3 were poor,accounting for 9.38%.The study showed that the urban road plant landscape construction in Jianye District of Nanjing was well balanced,also the quality of some road plant landscapes should be further enhenced.Based on the analysis and evaluation results,targeted improvement measures could be taken for the road plant landscape in Jianye District,and the research could provide a reference for improving the quality of urban road plant landscape.