Calorific value variations in components of 10 Canadian tree species

Calorific values of six softwoods and four hardwoods were determined for components such as stump, main stem, treetop, branches, foliage, and bark. Tree components among groups (hardwoods and softwoods) and within species differed highly significantly (P < 0.01) in calorific values. The calorific means ranged from 19.122 to 21.099 MJ/kg for softwoods and 18.396 to 20.091 MJ/kg for hardwoods.