Biomass and carbon stocks in black wattle stands of various ages in Rio Grande do Sul.

摘要: This study’s objective was to evaluate the carbon content and stocks of biomass in black wattle (Acacia mearnsii De Wild.) aged 1-7 years from two cultivation sites. A study conducted stands species, ageing on growing The contents differ among compartments biomass, being higher leaves lower wood. average ranged 45.01% 46.50% over age stands. Biomass increased with stand age, 3.39 t ha-1 first year of, 52.81 third, 99.71 fifth, 135,63 seventh after planting. Carbon were 1.53 year, 23.77 45.08 fifth 60.14 ha-11 proportion varied years, while leaves, flowers fruits decreased increasing wood bark tended increase. At rotation (seven years) accounts for approximately 80% biomass. mean annual increment at (7 are 19.37 8.59 ha-1, respectively.