Fitossociologia de sub-bosque de cerrado em talh?o de Eucalyptus grandis W. Hill ex Maiden no município de Bom Despacho-MG

摘要

Cerrado, the second largest Brazilian bioma, is an area increasingly subject to various impacts, thus demanding conservation and development of sustainable use methods. The objective of this work was to conduct a floristic and phytosociological regeneration survey of a Cerrado in Bom Despacho-MG as a basis for biodiversity and conservation - oriented decision - making. Thus, 15 plots of 200 m2 (10 x 20 m) were established in a former Cerrado area currently occupied by Eucalyptus grandis stands. Plots distribution was systematically performed. All the standing woody plants with a ground level circumference of 10 cm or more were sampled. The floristic composition presented 39 species distributed within 24 families. The families with greater number of species were Leguminosae Caesalpinioideae with 5 species, Myrtaceae with 4, Melastomataceae with 3, followed by Annonaceae, Leguminosae Papilionoideae, Nyctaginaceae, Rubiaceae and Vochysiaceae, with 2 species. The species presenting the greatest VI was Eucalyptus grandis (42,03%). The native species which presented greater VI were Miconia albicans (7,69%), Brosimum gaudichaudii (6,9%), Eugenia dysenterica (4,99%), Qualea grandiflora (3,11%) and Xylopia aromatica (3,01%). Out of the 39 native woody species within the understory of Eucalyptus grandis, 27 are typical of Cerrado; the others are acessory species which came from forests in the region. These data show that this Cerrado region is being regenerated.