Stand characteristics and distribution of a relict population of Persian ironwood (Parrotia persica CA Meyer) in northern Iran
Stand characteristics and distribution of a relict population of Persian ironwood (Parrotia persica CA Meyer) in northern Iran
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DOI：
10.1016/j.flora.2010.11.005
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发表时间：
2011-01-01
期刊：
影响因子：
1.9
通讯作者：
Copenheaver, Carolyn A.
中科院分区：
文献类型：
--
作者：
Sefidi, Kiomars;Mohadjer, Mohammad R. Marvie;Copenheaver, Carolyn A.
桃叶藓迈尔木（波斯铁木）是金缕梅科的一种落叶树，原产于伊朗北方，是阿尔博尔兹山脉的特有种。研究的目的是评估波斯铁木的现状和分布特征的四个森林的立场，树是一个占主导地位的或共同占主导地位的物种。林分内的物种丰富度从3到16木本植物和9到27林下物种。断面积在37平方米/公顷和77平方米/公顷之间变化，树木密度在320至367株/公顷之间变化。桃小食心虫占相对优势度的63-86%，占相对密度的41-100%。在非纯林中，其他重要树种包括水青冈和桦鹅耳枥。桃小卷蛾主要通过萌芽和摘心进行更新。保护残遗森林，如阿尔博尔兹山脉的波斯铁木森林，特别令人关切，因为它们是世界上唯一自然出现的这一物种。人为干扰的形式，木材采伐，牲畜放牧，并清除林地农业似乎是最大的威胁Parrotia persica的未来。(C)2010年Elsevier GmbH。All rights reserved.
Parrotia persica CA. Meyer (Persian ironwood) is a deciduous tree of the family Hamamelidaceae, native to northern Iran and endemic to the Alborz Mountains. The study objectives were to assess the current status and distribution of Persian ironwood by characterizing four forest stands where the tree was either a dominant or co-dominant species. Species richness within the stands varied from 3 to 16 woody species and from 9 to 27 understory species. Basal area varied between 37 m(2)/ha and 77 m(2)/ha and tree density varied from 320 to 367 stems/ha. Parrotia persica represented 63-86% of the relative dominance and 41-100% of the relative density. In non-pure P. persica stands, other important tree species include Fagus orientalis and Carpinus betulus. Parrotia persica regenerates mainly by sprouts and coppicing. Conservation of relict forests, such as the Persian ironwood forests of the Alborz Mountains, is of particular concern because they represent the only natural occurrence of this species in the world. Anthropogenic disturbance, in the form of timber harvesting, livestock grazing, and clearing forest land for agriculture appear to be the largest threats to Parrotia persica's future. (C) 2010 Elsevier GmbH. All rights reserved.