The present study deals with the estimation of above- ground biomass and carbon stock of tree density, basal area, biomass and carbon stock with the help of non-destructive Volume equations method used in tropical deciduous forest in 0.1 ha permanent plots, established in sites Lakhimpur kheri forest is located at Uttar Pradesh. It was found that for inside the study area boundary, the dominant dense Sal forest decreased remarkably by 60% and agricultural land by 52%, mixed deciduous forest by 30% and teak plantation area by 25% recently a Above- ground biomass Variations in species composition, density, diameter distribution pattern, biomass and carbon stock at different forest sites were attributed to different forest sites. Above-ground biomass of each species was estimated taking tree volume and species specific gravity. Field measurements based methods used for survey, sampling in forest plot for density ranged from 100 trees ha-1 to total geographical area of Lakhimpur kheri 7,680 sq. km. The biomass ranged from 4.28 t·ha-1 to 42.7 t·ha-1 and carbon stock from 2.54 t·ha-1 to 30.6 t·ha-1 across the all different study sites. Tree species richness was highest at Gola gokaran nath and Dudhwa forest area. Forest surveying and data for estimating above-ground biomass density and the carbon stock stored in biomass of forest.