基于植物多样性的衡阳市道路绿化研究

在采用抽样调查方法对衡阳市区道路绿化进行调查的基础上，分析了衡阳市道路绿地的物种组成、物种丰富度、频度及植物多样性组成。结果表明：衡阳市区道路绿地植物种类共有60种，其中木本植物50种，占总数的83.3%。木本植物中常绿植物35种，落叶树种15种；乔木20种，灌木30种。在乔木层中，樟树、广玉兰、桂花、二球悬铃木、欧美杨、雪松等出现频度及丰富度均较高；灌木层中出现频度及丰富度较高的植物有：红花檵木、海桐、石楠、月季、紫叶李等，并针对城市绿化现状与存在的问题提出了道路绿地建设的建议与对策。

Researches of Street Greening Based on Plant Diversity Investigation in Hengyang

OBJECTIVE] The paper aimed to analyze the problem as well as valuable experience in the design of street landscape planting and try to give some practicable methods to deal with the strategy in the road virescence of the garden city construction.METHODS]Based on the research of the plant diversity, richness and frequency of the main street in Hengyang city. RESULTS]The results showed that： （1） There were 60 category plants, there were 50 category woody plants, accounting for 83.3%.（2）There were 35 category greening plants and 15 category defoliant plants in woody plant. and 20 category trees and 30 shrubs in woody plants. （3） There were higher frequency in tree layer including Cinnamommum camphora , Osmanthus fragrans , Trachycarpus fortunei , Cedrus deodara , Platanus hispanica , Populus euramericana and so on; There were higher frequency in shrub layer includingLoropetalum chinense var.rubrum ,Pittosporum tobira ,Photinia serrulata Rosa chinensis , Prunus cerasifera ‘Atropurpurea’ etc. CONCLUSION] There are significant meaning in city road virescence management in Hengyang city and the same cities.