淄川区城区行道树的结构特征分析

为了解淄川区行道树的结构特征,采用抽样调查法对淄川区城区12条道路的行道树进行调查,分析乔木行道树的树种组成及各树种的应用频度、相对频度、相对显著度、相对多度及重要值等指标。结果表明:淄川区城区行道树共有17科18属20种;树种应用频度最高的为法国梧桐(Platanus orientalis),为91.7;物种重要值前2位为法国梧桐和国槐(Sophora japonica),分别为55.89和14.32。淄川区行道树优势树种明显,树种应用相对单一,常绿树种与落叶树种应用数量比例为3∶20,常绿乔木用量偏低,各条道路绿化水平差距大。

Structure Characteristics of Street Trees in Urban Area of Zichuan District

In order to understand the structural characteristics of street trees in Zichuan District,a sampling survey method was adopted to investigate the street trees in 12 roads in Zichuan District.The species composition,application frequency,relative frequency,relative significance,relative abundance and important value of tree species were analyzed.The street trees in urban area of Zichuan District are 20 species,belonging to 18 genera and 17 families.The highest frequency of tree species application is Platanus orientalis,requency being 91.7.The top two important values of species are Platanus orientalis and Sophora japonica,important values are 55.89&14.32.In Zichuan District,the dominant species of street trees are obvious,and the application of tree species is relatively simple.The proportion of evergreen trees and deciduous trees is 3∶20,the amount of evergreen trees is low,and the greening level of each road is wide.