<p><span style="font-size:14px"><span style="font-family:Arial,Helvetica,sans-serif">In present study, biomass and carbon accumulated in different tree species plantations after 25 year age of planting in entisol soil was evaluated. Plant attributes viz MAI diameter, MAI height, AGB and BGB and total biomass of trees exhibited significant variations among tree species however, <em>A. lebbeck</em> was found to have highest MAI diameter while <em>E. globulus</em> scored the highest MAI height among all other trees of investigation. Total biomass was found maximum 30.16 q/tree followed with 16.66 q/tree in <em>A. lebbeck</em> and <em>E. globulus</em> respectively as compared to average biomass of all tree species (8.15 q/tree). The performances of <em>D. indica</em> and <em>D. sissoo</em> were poor as they rendered less biomass in entisol soil. Total carbon stocks of plantation was estimated highest (942.50 t/ha) in <em>A. lebbeck</em> followed by <em>E. globulus</em> (520.62 t/ha), <em>T. arjuna</em> (143.12 t/ha), <em>A. indica</em> (106.87 t/ha) etc.</span></span></p>