宁波城市园林植物多样性调查研究

对宁波城市公共绿地居住区绿地、单位附属绿地、通道绿地等4类绿地进行了园林植物多样性调查。结果表明,宁波城市现有园林植物82科175属356种。植物种类在不同绿地上的水平空间分布格局为:公共绿地(274种)>单位附属绿地(202种)>居住区绿地(122种)>通道绿地(105种);从植物的垂直空间分布上看,乔灌木层植物具有较高的种类组成,而地被层的物种组成成分较低。植物群落配置以乔—灌—草结构为主(占73%),乡土植物种数仅占各种园林植物总数的26.9%。植物多样性综合评价指标排序为:通道绿地>公共绿地>居住区绿地>单位附属绿地,与物种丰富度Patrick指数(S)和Margalef指数(da)的排序完全一致。

Diversity Investigation on the Landscape Plants in Ningbo City

Diversity of the landscape plants was investigated for 4 kinds of urban greenlands such as public greenland,residential greenland,company affiliated greenland and channel greenland in Ningbo City.Results showed that there were 82 families,175 genera and 356 species landscape plants in Ningbo City.The horizontal distribution characteristics of plant species were public greenland(274species)>company affiliated greenland(202species)>residential greenland(122species)>channel greenland(105species);The vertical distribution characteristics were that the components of tree-shrub layer were higher,while the ground layer were lower.Plant community diversity was mainly set up with tree-shrub-herb(accounting for 73%).The native plant species used was accounted for 26.9% of all kinds of plant species.The index order of the comprehensive diversity of the plants was that channel greenland>public greenland>residential greenland>company affiliated greenland,which was the same orders as Patrick index(S)and Margalef index(da).