Association, Correlation and Regression Studies of Forest Floor of <I>Pinus roxburghii</I> Sarg. of Garhwal Himalayas

Abstract

A tolal of 30 species were found in the forest floor of Pinus roxburghil Sarg. Grasses dominating over dicots, dominating species being Eragrostis brachyphylla. E. pilosa and Eriophorum gracile. Nineteen out of 30 species were found associated. The association coefficient for significantly associated species varied from + 0.63 to + 0.98 for positive and −0.466 to − 0.777 for negative associations. Densities of species pairs correlated significantly. These species were further analysed for regression equation.