Abstract
The biological spectrum of Lal Dhang Forest Range of Lansdowne Forest Division in Garhwal Himalaya reveals that the vegetation of this region is phanero-therophytic. The life forms observed are phanerophytes (42.1%), therophytes (37%), chamaephytes (11.6%), cryptophytes (7.4%), and hemicryptophytes (1.9%). The percentage of therophyte is higher in comparison to Raunkiaer’s normal spectrum. The higher percentage of therophytes was due to the biotic disturbances, particularly due to human interference.
Keywords
Vegetation, Phanero-therophytic, Biotic disturbances, Human interference, Weedy species, Climatic condition, Hemicryptophytes