南京城市道路绿化带植物结构调查与分析

对南京市主城区24条干道上的道路绿化带进行调查，结果发现：南京市现有道路绿地主要应用的乔木树种有26科、69种，灌木19科、34种；出现频度最高的乔灌木分别为悬铃木42％、海桐64％；常绿、落叶树种的数量配比为1．00：1．24，其中乔木的常绿、落叶树种数量配比为1．0：1．3；乔木与灌木种类配比为2：1，数量配比约为1．0：3．2。为进一步做好南京城市道路绿地绿化景观建设工作，需要在充分考虑或体现或尊重南京的地域气候、人文历史条件等基础上，根据适生、功能、景观等方面的综合要求进行道路绿化植物的合理配比。

Survey of Plant Community Structure of Greenspace along Urban Streets in Nanjing City

A greenspace survey was conducted into 24 major streets in the urban area of Nanjing City, 69 arbor tree species from 26 families, and 34 shrub species from 19 families were indentified. It was found out that the highest application frequency of arbor tree specie was Platanus acerifolia, which reached 42% and Pittosporum tobira was the shrub tree specie with the highest application frequency that reached 64%. The number ratio of the ever- green tree species and the deciduous tree species was 1.00： 1.24, the number ratio between the evergreen arbor tree species and the deciduous arbor tree species was 1.0： 1.3. The ratio of arbor tree species and the shrub tree species was 2： 1, while the number ratio of arbor and shrub tree species was 1.0：3.2. It was proposed that the ratio among different categories of plants for street greenspace should be improved according to the ecological adaptabili- ty, comprehensive function, landscaping purpose and based on integrated consideration of the local geographical, climatic, social, historical and humanity background in Nanjing City.