The assessment of plant biomass in Quercus leucotrichophora and Pinus roxburghii forest dominated grazinglands was made in grazed and ungrazed forest. The study area is located between 29^o 22’ and 29^o 23’ N latitude and 79^o 28’ and 79^o 29’ E longitude at an elevation of 1700 – 2000 m in the Kumaun Central Himalaya, India. The forest grazing land identified as grazed, based on continuously grazed by domestic animals for last several years and large number of grazing trails and dung remains. Ungrazed forest, the grazing animals were hardly reached or least grazing incidence was detected and away from human settlements. The aboveground biomass extracted in 1x1 m quadrat and belowground in 25x25x30 cm monolith. The biomass varies from 176.9 to 385.9 gm^-2 in oak forest grazingland and was higher 134.79 to 267.96 gm^-2 as compare to pine forest grazingland. The mean total aboveground biomass in grazed was 583.00±1.25 gm^-2 and 1031.5±1.78 gm^-2 in ungrazed oak forest. The mean below ground biomass was 373.93±0.68 gm^-2 in grazed and 591.73±2.66 gm^-2 in ungrazed oak forest. The mean total aboveground biomass of grazed was 450.2±2.05 gm^-2 and 731.5±1.84 gm^-2 in ungrazed pine forest. The mean belowground biomass was 194.23±0.33 gm^-2 in grazed and 260.37±0.18 gm^-2 in ungrazed pine forest. The anthropogenic disturbance and disturbances including climatic change is adversely affects the biomass of these forests. Thus, the conservation and management of these temperate forest grazingland is an urgent need to the people living in this zone for their livelihood.