Abstract

Geeta Kharkwal1, Yaswant Singh Rawat

An extensive sampling was conducted for vegetational analysis in different forest sites between 1600 and 2600 m asl in Kumaun Himalaya. Quercus leucotrichophora A. Campus, Quercus floribunda Lindl. ex Rehder, Quercus semecarpifolia J.E. Smith and Pinus roxburghii Sarg. are the dominant tree species in banj- oak, tilonjoak, kharsu-oak and chir- pine forests, respectively. Among the sampling sites, total density of tree, shrub and herb species was ranged from 10 to 28.6 individuals (indv/100 m2 ) 1.8 to 21.7 indv/25 m2 , and 28.1 to 103.7 indv/m2 , respectively. The total abundance-frequency (AF) ratio of tree, shrub and herb species across the sampling sites varied from 0.23 to 1.25, 0.25 to 1.79 and 3.4 to 27.3, respectively. The abundance- frequency ratio in the present study showed contagious distribution pattern in tree, shrub and herb species.