Abstract
The present study was conducted to investigate the structural differences in herbage vegetation under different aged chirpine trees at four locations, viz., Barog, Deothi, Dharampur and Tatul of Solan Forest Division of Himachal Pradesh, India. Each location had three sites representing different ages of chirpine stand, viz., sapling, pole and tree besides an open grassland. Monthly plant sampling in each site revealed ten grass species, two sedges, two legumes and two non-legumes in total. Total density and LAI of herbage was found to increase from July to August/September, thereafter, decreased up to November. Amongst the different species, in general, Themeda anthera; Panicum maximum, Chrysopogon montanus and Pollinia argentea were the major contributors to the density of herbage vegetation. Total density of herbage was higher in open grassland as compared to the three chirpine inhabited sites at all the locations. Further, LAI of herbage under chirpine sites was less as compared to LAI of herbage in open grassland during different samplings. LAI of herbage had significant relationship with density variations.
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