印度北阿坎德邦平达里冰川谷海拔梯度地衣生物多样性

S. Joshi, D. Upreti, P. Das
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引用次数: 2

摘要

利用不同的生物多样性指数,研究了平达里冰川谷地衣多样性在海拔梯度上的分布格局。研究在海拔1760 ~ 3660m范围内进行,包括3个不同的生物群系;温带、高山和温带-高山过渡。共发现地衣84种,具有3种主要生长形式和3种生境偏好。Shannon指数、Pielou指数和Margalef指数的趋势相似,而Simpson指数的趋势略有不同。除Simpson指数外,其他指数均与海拔高度呈正相关。在生长形态上,除叶面生长外,其余各形态均随海拔的升高而呈上升趋势。温带和温带-高寒过渡带以皮质地衣为主(~90%),高寒带以萨克斯地衣为主(98%)。虽然对海拔梯度与高等植物的关系进行了研究,但地衣是西喜马拉雅地区的第一类型。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Lichen Biodiversity across Elevational Gradient in Pindari Glacier Valley of Uttarakhand, India
The lichen biodiversity pattern across elevational gradient in Pindari Glacier valley was studied, using different diversity indices. The study was done across elevational gradient ranging from 1760m to 3660m consisting of three different biomes; temperate, alpine, and temperate-alpine transition. A total of 84 species of lichens were found consisting of three major growth forms and three habitat preferences. Shannon, Pielou, and Margalef indices showed similar trends, while the Simpson index showed a slightly different trend. Except Simpson index all other indices exhibit a positive trend with the altitude. In case of growth forms, except foliose growth form all other are showing a positive trend with increasing altitude. It is also observed that the corticolous lichen dominates (~90%) in temperate and temperate-alpine transition, and saxicolous lichens dominate (98%) in Alpine zone. Although relational study between elevational gradient with higher plants are done, but with lichens it is one of the first type in western Himalayas.
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