Vegetational Diversity Analysis across Different Habitats in Garhwal Himalaya
Vegetational Diversity Analysis across Different Habitats in Garhwal Himalaya
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加瓦尔喜马拉雅地区不同生境的植被多样性分析
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
J. Chandra
中科院分区：
文献类型：
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作者：
V. R. Rawat;J. Chandra
我们对海拔 2200 至 2500 米之间的四个不同植被类型的森林地点进行了研究。河岸地点记录了最多的树木、灌木和草本植物种类（分别为 22、25 和 54）。蕨类植物和苔藓植物物种丰富度在潮湿的地方最高（分别为 4 和 5）。潮湿和干燥栖息地的攀爬者数量较多（各 7 种）。寄生物种仅限于干燥和河岸栖息地。河岸地区和干旱地区的限制乔木和灌木种类分别较多。潮湿地区的草本植物和攀缘植物种类较多。该海拔范围内的分布和物种丰富度格局很大程度上取决于海拔和气候变量。沿着加瓦尔喜马拉雅山的整个范围，物种体系之间的重叠很广泛。因此，存在多种物种和区域混合的过渡群落。目前的研究表明，开放的树冠增加了乔木、灌木、草本植物和攀缘植物的丰富度。
Four forest sites varying in vegetation types were studied along an altitudinal range between 2200 and 2500 m. Maximum tree, shrub, and herb species were recorded on stream bank site (22, 25, and 54, resp.). Pteridophytes and bryophytes species richness was maximum on moist site (4 and 5, resp.). The number of climbers was greater in moist and dry habitats (7 species each). Parasitic species were restricted only on dry and stream bank habitats. Restricted tree and shrub species were greater on stream bank site and dry site, respectively. The herb and climber species were greater on moist site. The distribution and species richness pattern in this elevational range largely depend on the altitude and climatic variables. Along the entire range of Garhwal Himalaya, the overlapping among species regimes is broad; therefore, transitional communities having mixture of many species and zones are present. The present study indicates that the opening canopies increase the richness of tree, shrub, herb, and climbers.