| 中国神农架国家自然保护区鄂西箬竹(Indocalamuswilsoni)的群落特征(英文) |
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| 引用本文： | 李兆华.中国神农架国家自然保护区鄂西箬竹(Indocalamuswilsoni)的群落特征(英文)[J].林业研究,2001(3). |
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| 作者姓名： | 李兆华 |
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| 作者单位： | LI Zhao-hua，Manfred Denich (Center for Development Researches (ZEF)，Bonn University，D-53113 Bonn，Germany) |
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| 摘 要： | 通过对含有鄂西箬竹的4种植被,即针阔混交林、次生阔叶林、疏灌丛及草甸的样地调查,比较分析了箬竹群落的区系构成,生活型、群落结构及竹类生存状况。20年前的针叶树种的采伐提升了样地的物种多样性,但影响了其下层植物箬竹的生存。疏灌丛比其背景植被草甸含有更高的物种多样性和更多的地下芽植物,然而疏灌丛下的箬竹长势更好。箬竹偏喜于缓坡上具有中等盖度的植被环境。发生于次生阔叶林中的箬竹群体开花预示着在整个神农架亚高山生境的箬竹将在未来的几年内同时开花死亡。这不仅会改变现存竹类立地的区系构成和群落结构,同时也会波及到这一稀有物种的生存问题。
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| 关 键 词： | 箬竹 Indocalamuswilsoni 群落结构 生存 |
Community features of Indocalamus wilsoni in the Shennongjia Na-tional Nature Reserve, China |
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| LI Zhao-hua,Manfred Denich.Community features of Indocalamus wilsoni in the Shennongjia Na-tional Nature Reserve, China[J].Journal of Forestry Research,2001(3). |
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| Authors: | LI Zhao-hua Manfred Denich |
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| Abstract: | Four vegetation types, namely coniferous and broadleaved mixed forest, secondary deciduous broadleaved forest, open shrubs and meadow, with dwarf bamboo (Indocalamus wilsoni) are compared on their floristic composition, life form, community structure, and survivorship of bamboos. Disturbance of conifer-logging two decades ago promoted the species di-versity, but negatively influenced the survivorship of dwarf bamboo which is dominate on the forest floor. Open shrubs bear more species diversity and more geophytes in its life-form spectrum than its background vegetation subalpine meadow, how-ever, dwarf bamboo is growing much better in the open shrubs than in the meadow. It seems dwarf bamboo probably favor-ites to occur in the vegetation at gentle slopes with a mediate canopy cover. Its mass flowering in the secondary deciduous forest suggests that a simultaneous flowering and following dieback maybe irrupt in the recently coming years over the subal-pine Shennongjia in China, which will be not only alter the floristic composition and community structure of the old bamboo stands, but also influence the survivorship of this rare species. |
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| Keywords: | Indocalamus wilsoni Community structure Survivorship |
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