Characterization of Tree Community in a Forest Post Exploration Area, South of Tocantins State

Abstract

Considering the lack of data and studies in post-forestry areas, the objective of the study was to evaluate the floristics, phytosociology and the distribution in height and diameter classes of the tree species after forest management of the Wood Industry Rio Formoso located in the municipality of Dueré, State of Tocantins. Made from a forest inventory with systematic sampling, where 22 plots measuring 20 m by 50 m were installed, totaling 2.2 ha of sample area. All arboreal individuals with a circumference of 1.30 m from the ground ≥ 15 cm were sampled, botanically identified, and classified into ecological groups. Phytosociological parameters were analyzed, and volume, biomass and carbon stocks were determined from equations for the region. In the area were found 821 individuals distributed in 27 species and 18 botanical families; Shannon's density, dominance and diversity values are considered low for comparison purposes with other studies. The diametric structure showed an unbalanced "inverted J" pattern. The volume stock was 355,068 m³. ha -1 , the biomass was 67,867 ton. ha -1 ; and carbon was 33,934 ton. ha -1 .