Research Article NeBIO I Vol.9(1) 2018 I Pages 150-157

Effects of anthropogenic disturbances on community structure and regeneration status of tree species in reserved and panchayat forests of Pauri Garhwal, Western Himalaya, India

Mujahida Parveen, JK Tiwari, Meena Nautiyal, P Tiwari and Dinesh Singh Rawat


ABSTRACT

The effects of anthropogenic disturbances on community structure and regeneration status of tree
species were analysed in a reserved forest (RF) and in a panchayat forest (PF) of Pauri district,
Uttarakhand state. Each forest was categorized into three sites, i.e., least disturbed (LD), moderately
disturbed (MD) and highly disturbed site (HD) on the basis of their disturbance scores. Disturbance
index, fodder collection, forest fire, fuel wood collection, grazing and lopping percentage
considered as the main criteria to calculate the disturbance scores for each site. The study revealed
that the RF had higher tree species diversity (2.95), density (8.9 ind/ 100 m 2 ) and basal area (43.72
m 2 / ha) than the PF. The overall regeneration was good in RF but poor regeneration status observed
in PF. Species richness, diversity, dominance and density of regeneration layers (trees, seedlings
and saplings layer) decreases significantly with the increase in anthropogenic disturbances (P <
0.05).

KEYWORDS:  Anthropogenic disturbance, Community structure, Regeneration layers, Himalayan
forest.

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NeBIO 9(1): Parveen et al