ABSTRACT
The objective of this work was to study the distribution of biomass and the quantity of storaged nutrients of biomass in the different compartments ( leaves, branches, bark, timber) of Eucalyptus camaldulensis Dehnh, Eucalyptus grandis Hill ex Maiden and Eucalyptus torelliana F. Muell tree, with 9,9 and 12 years old respectively, cultivated in soils with low fertility and sandy texture, in Anhembi – SP. E. grandis showed the highest production of biomass for all the analyzedcompartments excepting for thick branches. For the three species the trunk (bark + timber) represented in average 90% of the biomass above the soil. The nutrients were concentrated in a decreasing way leaves, branches, bark and timber. The crown of the tree were responsible for the accumulation of nearly 24% of the nutrients in the total biomass of the tree. In the bark were found the highest quantities of calcium, nearly 60% of the total. E. grandis removed the highest quantity of nutrients of the soil, returning smaller quantities than other species. Thus special cares should be taken in the to assure the yield of future.
Key words:
biomass; nutrient; E. camaldulensis; E. grandis; E. torelliana