通辽市开发区行道树的结构特征分析

The Structure Analysis of Street Tree in Tongliao Development Zone

行道树作为城市园林绿化的骨干,在创造优美的城市景观和改善城市生态环境中发挥着十分重要的作用.通过对通辽市开发区主要路段行道树进行调查,结果表明:通辽市开发区行道树共有园林树木9种,隶属6科7属.其中国槐重要值是37.98,其他树种重要值均不超过15.胸径20—30cm的树木最多,占总数的48.13%,处于10—20cm的树木占47.31%.平均树高为6.88m,高度处于4—7m之间的树木最多,占总数的49.02%.根据以上调查结果可知开发区行道树存在种类单一,常绿树种,观花、观果树种较少的问题.据此,提出了对策与建议.

The street tree plays a very important role in creating graceful city view and improving urban ecological environment as the backbone of urban landscaping. Through the investigation of street tree in Tongliao development zone, the results showed:there are 9 species belonging to 6 families 7g enuses of the street tree. Important value of So?phora japonica is highest, the value is 37.98, other species importance value does not exceed 15.The street tree of DBH between 20-30cm is highest, the percentage is 48.13,then is the 10-20cm,the percentage is 47.31%. The av-erage tree high is 6.88m. The street tree of tree high from 4 to 7m is highest, the percentage is 49.02%. The species of street tree in Tongliao development zone is single. The evergreen species, flower and fruit ornamentals are lacking. At the end, regarding to the analysis of the above problems, provide countermeasure and suggestion to improve current situation and rich street tree species.