Some structural and timber class features of evergreen broadleaf forest in Bao Lam district, Lam Dong province

Abstract

Research on layer 8 cm upwards diameter trees of evergreen broadleaf forest
in Bao Lam district, Lam Dong province has a number of structural and timber class features as: In rich forest stand there are 1024 trees/ha, which 8 cm ≤ D 1.3< 15 cm class accounted for 61.4%; regeneration of the 5882 trees/ha, mainly accounts for 35.0% of timber class 6; total trees accounted for 29.2% of timber class 5; total basal area accounted for 36.3% of timber class 5; overall volume under the branches concentrated in the timber class 5 with 37.9%; total volumes are concentrated in the accounts for 38.2% of timber class 5; tree number on 30 cm diameter classes at the focus accounted for 38.6% of timber class 5; volume under the branches on 30 cm diameter classes at the focus accounted for 41.9% of timber class 5. In average forest stand there are 733 trees/ha, which 8 cm ≤ D1.3 < 15 cm class accounted for 47.8%; regeneration of the 5600 trees/ha, mainly accounts for 58.9% of timber class 6; total trees accounted for 43.3% of timber class 6; total basal area accounted for 32.9% of timber class 5, 32.9% of timber class 6; overall volume under the branches concentrated in the timber class 5 with 34.2%; total volumes are concentrated in the accounts for 35.5% of timber class 5; tree number on 30 cm diameter classes at the focus accounted for 43.2% of timber class 5; volume under the branches on 30 cm diameter classes at the focus accounted for 46.6% of timber class 5. In poor forest stand there are 805 trees/ha, which 8 cm ≤ D 1.3 < 15 cm class accounted for 62.1%; regeneration of the 5600 trees/ha, mainly accounts for 50.0% of timber class 6; total trees accounted for 66.1% of timber class 6; total basal area accounted for 58.0% of timber class 6; overall volume under the branches concentrated in the timber class 6 with 55,7%; total volumes are concentrated in the accounts for 56.0% of timber class 6; tree number on 30 cm diameter classes at the focus accounted for 66.7% of timber class 6; volume under the branches on 30 cm diameter classes at the focus accounted for 82.7% of timber class 6.