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    湛江城区行道树的结构特征研究

    关键词:园林植物;行道树;结构特征;重要值;健康状况;乡土植物

    Key words:landscape plants; street tree; structure; importance value; health condition; native species

    摘要:采用抽样调查法对湛江城区45条道路的行道树进行调查。调查发现,湛江城区行道树共有24科34属41种,含种数最多的科、属分别是桑科(7种)及榕属(6种),栽植株数最多的是小叶榕。湛江城区的行道树种类较少,这将不利于树木维护,且降低了城市的景观多样性。湛江城区行道树中乡土树种和外来树种数量相当,平均树高较高,平均胸径和平均冠幅均偏小,树木总体健康,基调树种有5种,较10年前发生了较大变化。

    Abstract:The street trees survey was conducted on 45 streets of Zhanjiang. The street trees in urban area of Zhanjiang were 41 species, belonging to 34 genera and 24 families. The largest family and genus were Moraceae (7 species) and Ficus (6 species) respectively. The highest number of street trees was Ficus microcarpa. The main body were dominated by fewer major species, which would lead to maintenance problems and reduce the diversity of urban landscape. The proportion of native species was nearly equal to the exotic.Average TH was large, yet average TCC and DBH of street trees were a little small. The overwhelming majority were healthy. The background street trees in the urban area of Zhanjiang were Ficus microcarpa and so on, the composition of which had been changed very much compared to 10 years ago.

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