Florística e estrutura do estrato arbustivo-arbóreo de uma floresta restaurada com 40 anos, Viçosa, MG

Abstract

The objective of this study was to evaluate the woody shrub layer of a restored forest through planting after 40 years of its implementation, in Viçosa, MG. It was allocated in the total area of one hectare, 16 contiguous plots of 25 x 25 m to assess the woody shrub layer, recording all individuals with PBH > 15 cm.It was recorded 1,432 individuals, 112 species and 36 families, of which 95 were native and 16 were exotic species, with higher Importance Value for Guarea guidonia and Fabaceae family, high diversity (H'= 3.51) and low ecological dominance (J'= 0.743), higher percentage of early secondary successional class at the species level (34.82%), and late secondary at the level of individuals (34.29%), and predominance of syndrome of seed dispersal by animals. The basal area was 47.8 m2/ha and the average height of 10.6 m, ranging from 2.2 m to 27.2 m. The 0-20 cm layer soil had a an average base saturation (V = 43.40%) and 20-40 cm layer of low base saturation (V = 34.70%), with soil density (1.08 and 1.07 kg / m3) within the ideal range for clay soils. The restored forest after 40 years reached a level similar to semideciduous seasonal forests in advanced stages of succession, in Viçosa, MG, in terms of phytosociological parameters.