AGB is in kg/tree so if you multiply that by .001 tonnes per kg, you’ll have your answer for AGB in tonnes / tree. Now you just need to multiply your answer by the how many trees there are per hectare. If you have a specific location, you might estimate the trees per hectare by sampling. If that’s not feasible, do you have a sense of how far apart the trees typically are? If the trees are about 30 cm apart, that’s about 108,000 trees per hectare, but if trees are about 5 m apart, that’s under 200 trees per hectare. Best wishes with your project Mohd. ~ Kevin