Floristic relations, diametric and hypsometric structure of the arboreous component in a fragment of Seasonal Semideciduous Forest in Vicosa, Minas Gerais State, Brazil

Abstract

The objective of this paper was to analyze the diametric and hypsometric structure of the arboreous component in a Seasonal Semideciduous Forest fragments in Vicosa- Minas Gerais State, Brazil, and to compare the floristic with others seven surveys, with the intention of getting a better comprehension regarding to the sucessional period of this patch. Forty plots of 10 X 25 m (250 m²), totaling a sampling area of 10.000 m² (1 ha). The plots were distributed at the toposequences, proportionally to the area of each one. The distance between each plot was of 25m. The criterion of inclusion was CAP ≥ 15.0 cm. It was conducted on ordinance analysis (CA) between the floristic species in eight surveys carried out in Viçosa (MG). In the sampled area (10,000 m²) the ten species of higher importance value were analyzed. The trend line of diametric individual structure was reverse-J-shape. The most of individuals, in relation to height class, was located in the initial classes. However, some species had deficiency in the initial classes. The ordinance analysis (CA), for quantitative or structural data showed two well defined groups. The area in study is a secondary uneven age forest formation, in initial period of succession.