基于综合分析法的城市道路植物景观调查与评价

Investigation and evaluation of urban road plant landscape based on the comprehensive index evaluation method

以南京市建邺区32条城市道路植物为研究对象,在实地调查基础上通过景观稳定性和景观应用性2个维度中的10项评价因子对研究区植物景观质量进行综合分析与评价,并将道路植物景观划为Ⅰ级(优)、Ⅱ级(良)、Ⅲ级(中)和Ⅳ级(差)4个级别。结果表明,该区道路植物种类丰富,观赏树种应用比例较高,道路绿化带观花树种应用比例超过40.00%。道路植物景观综合评价体系中空间层次性、季相丰富性和物种多样性评价因子权重占比相对较高,其中景观综合评价分值最高的是JDZL,为7.21。32条城市道路植物景观中Ⅰ级路2条,占总体的6.25%;Ⅱ级路12条,占总体的37.50%;Ⅲ级路15条,占总体的46.88%;Ⅳ级路3条,占总体的9.38%。表明,南京市建邺区城市道路植物景观建设均衡性较好,部分道路植物景观质量需进一步提升。基于分析评价结果提出道路植物景观的提升措施,为城市道路植物景观品质提升提供参考。

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.