Abstract: To find plant composition and utilization of Shenzhen urban dividing stripes and explore urban dividing stripe greening construction and development of countermeasures, 37 various types of standard dividing stripes were set based on general survey of 100 roads, their greening plant species, hierarchical structure, plant community design were investigated. The results indicated the richness of urban dividing stripes planting species in Shenzhen (up to 125), the diversity of plant community design patterns (up to 9), together with the absolute domination of broadleaf evergreen plants remaining green through all seasons, while the ratio of everblooming ornamental flowers was appropriate and moderate. In the case of different life-form’s quantity constitution, within the 30 m2 of green area，tree∶shrub∶ground cover(m2)∶green space(m2)=3.1∶2.4∶15.5∶30.0, tree density was too large. It was proposed that adding the proportion of native plant species, colored foliage plants and ornamental flowers, and reasonably decreasing the quatity of trees as well as properly increasing application of shrubs would optimize the community structure. The local characteristics and countermeasures of urban style would be completely expressed on the basis of display harmony and stable plant community.

Key words: urban dividing stripes, plant species composition, green design, density

摘要： 在对深圳市道路绿化普查的基础上，设置各类型分车带标准地37个，对分车带的物种状况、层次结构、配置模式等进行研究。结果表明，深圳市道路分车带绿化植物物种丰富，达125种；配置模式多样，达9种；常绿阔叶植物占绝对优势，四季常绿；观花植物比例适中，花开不断。从不同生活型植株数量构成看，在30 m2绿地面积内乔(株)∶灌(株)∶地被(m2)∶绿地(m2)=3.1∶2.4∶15.5∶30.0，乔木密度过大。研究提出，可通过增加乡土植物、色叶植物及观花地被植物的比例，合理减少乔木的株数并适当增加灌木用量来优化分车带群落结构，充分表现地方特色和城市风貌。

关键词: 道路分车带, 植物构成, 绿化配置, 密度