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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Studies on subalpine forests of Hamta Pass area in Himachal Pradesh, India with a focus on Betula utilis populations
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Studies on subalpine forests of Hamta Pass area in Himachal Pradesh, India with a focus on Betula utilis populations

机译：印度喜马偕尔邦哈尔达通讯区苏尔鹏森林研究，专注于Betula Utilis人口

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摘要

The present study was conducted in Hamta Pass area of Kullu district, Himachal Pradesh, India with a focus on Betula utilis populations. Totally 16 populations of B. utilis representing four habitats and three aspects were studied. The maximum sites were represented by moist and moist, shaded habitats with northwestern aspect. Totally 188 plant species representing trees, shrubs and herbs were recorded. Acer acuminatum, Abies pindrow, Prunus cornuta and Quercus semecarpifolia were the major associated species of B. utilis in the subalpine zone of Hamta Pass. Based on importance value index five tree communities, namely A. acuminatum, A. pindrow, B. utilis, Q. semecarpifolia and B. utilis-P. cornuta mixed were identified. Among the communities, total density of trees, shrubs and herbs was recorded from 160 to 270, 300 to 515 and 21 to 33 individuals m(-2) respectively. The total basal area recorded was 6.94-42.10 m(2) ha(- 1), species richness 15-127, and species diversity for trees 0.4-0.9, shrubs 0.0-2.1 and herbs 1.7-4.2. The density and regeneration (i.e. seedlings and saplings) of B. utilis in most of the populations revealed that this species will continue to grow in the area. However, continued anthropogenic activities, climate change and other factors may cause population depletion in the study area.
机译：本研究在印度喜马偕尔邦Kullu区的Hamta Pass地区进行，重点研究了产朊桦种群。研究了16个代表四个生境和三个方面的产朊双歧杆菌种群。最大的位置由西北方向的湿润和潮湿、阴暗的栖息地代表。共记录了188种代表树木、灌木和草本植物的植物。Acer acuminatum、冷杉pindrow、李属cornuta和栎属semecarpifolia是Hamta Pass亚高山区产朊双歧杆菌的主要伴生种。根据重要值指数，确定了五个树木群落，即尖叶杨、平卓木、产朊木树、半叶木树和产朊木树-角果木树混合群落。在这些群落中，树木、灌木和草本植物的总密度分别为160至270、300至515和21至33个个体m（-2）。记录的总断面积为6.94-42.10 m（2）ha（-1），物种丰富度为15-127，树木的物种多样性为0.4-0.9，灌木为0.0-2.1，草本为1.7-4.2。大多数种群中产朊杆菌的密度和再生（即幼苗和树苗）表明，该物种将继续在该地区生长。然而，持续的人类活动、气候变化和其他因素可能会导致研究区域的人口减少。

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