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首页> 外文期刊>Environmental Monitoring and Assessment >Bark removal and population structure of Taxus wallichiana Zucc. in a temperate mixed conifer forest of western Himalaya
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Bark removal and population structure of Taxus wallichiana Zucc. in a temperate mixed conifer forest of western Himalaya

机译：南方红豆杉的树皮去除和种群结构。在喜马拉雅山西部温带针叶林中

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摘要

Taxus wallichiana Zucc. (Himalayan yew) represents one of the most threatened medicinal tree species of the Himalayan region. Heavy exploitation of its bark and leaves for taxol~? has resulted in decline in its population. Generating quantitative information on Himalayan yew has therefore been stressed. The present paper provides information on the population and bark removal of Himalayan yew from one of the interior areas of Himalaya. Total count and quadrat method were deployed to generate quantitative information on its population while bark removal was estimated based on depth and extent of bark removed. After analyzing the existing information and the results of the study, a rapid vulnerability assessment (RVA) of the species was carried out. Taxus reported a density of 72 individuals/ha and was present as an under canopy of Picea smithiana. Complete stripping of bark was observed in 11 % of the Taxus population which amounted to ca. 18,152.86 cm~3 of bark removed. The age class distribution showed complete absence of seedlings and saplings. RVA scores also reported higher values (26) thereby pointing toward the high vulnerability of this species. Across its entire distributional range, Taxus population is under severe pressure. It is high time when few patches of Taxus are demarcated as Medicinal Plant Conservation Areas, and detailed studies on its autecology are initiated.
机译：南方红豆杉（喜马拉雅红豆杉）代表喜马拉雅地区受威胁最大的药用树种之一。它的树皮和叶子被紫杉醇大量利用了吗？导致人口减少。因此，强调了生成关于喜马拉雅紫杉的定量信息。本文提供了关于喜马拉雅山内部地区之一的喜马拉雅红豆杉的种群和树皮去除的信息。部署了总计数和quadrat方法以生成有关其种群的定量信息，同时根据去除树皮的深度和程度估算了去除树皮的数量。在分析了现有信息和研究结果之后，对该物种进行了快速脆弱性评估（RVA）。红豆杉报道的密度为72个人/公顷，以史密斯云杉的树冠存在。在11％的红豆杉种群中观察到树皮被完全剥离，总计约占树皮总数的60％。去除18152.86 cm〜3的树皮。年龄组分布显示完全没有幼苗和树苗。 RVA分数也报告较高的值（26），从而表明该物种的高度脆弱性。在整个分布范围内，红豆杉种群承受着巨大的压力。现在是时候将少量的红豆杉划定为药用植物保护区，并开始对其主观病学进行详细研究了。

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  • 来源
    《Environmental Monitoring and Assessment》 |2013年第4期|2921-2928|共8页
  • 作者

    Sanjay Kr. Uniyal;

  • 作者单位

    Biodiversity Division, CSIR-Institute of Himalayan Bioresource Technology,Post Box # 6, Palampur 176061 Himachal Pradesh, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    bark; medicinal; taxol; western himalaya; yew;

    机译：吠;药用紫杉醇喜马拉雅西部;紫杉;

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