A Study of Estimation of Atmospheric CO₂ Storage in Evergreen Broad-leaved Environmental Protection Forests

Above Ground Biomass of Evergreen Broad-leaved Environmental Protection Forest

Abstract

Twenty-four evergreen broad-leaved sample trees (Cinnamomum camphora, Quercus glauca, Persea thunbergii, Elaeocarpus sylvestris var. ellipticus, Lithocarpus edulis ) were cut down in an environmental protection forest 30 years-old after plantation at reclaimed land in Oita city, Oita Prefecture. After trunk diameters and height were measured, the trunk, branch, and leaves were weighted. Allometric relationships to predict individual weights of trunk, branch, and leaves were established and we estimated above ground biomass. Total above-ground biomass at the Oita site amounted to 327.3 (Trunk: 230.1, Branch: 82.3, Leaf: 14.9) t/ha. This value is similar as former study at 50-60 years evergreen broad-leaved forest in Japan.