Espécies de cerrado com potencial para recupera??o de áreas degradadas por minera??o de ouro, Paracatu-MG

摘要

The objective of this work was to study species that can be tested in the recovery of Arsenio high concentration areas. Therefore, 10 cerrado areas degraded by gold exploration in Paracatu-MG, Brazil were studied. It was used the Braun-Blanquet cover value and abundance scale. The species were classified by the Raunkiaer life form. The areas were floristically compared by S?rensen index. Out of 197 woody and herbs morpho-species found, 102 were identified at specific level, 35 at genus level and 40 at family level. Twenty morpho-species could not be identified. There was a great floristic richness among sample units (21-53 species), which influenced the formation of three groups in floristic similarity analysis. The more abundant and probably more adapted species to the environmental conditions were Axonopus marginatus, Simarouba amara, Aristida ekmaniana, Digitaria ciliaris, Stylosanthes viscosa, Andropogon bicornis, Maprounea guianensis and Sabicia brasiliensis. The most frequent form of life was phanerophyte followed by hemicryptophyte and chamephyte. In the biological spectra, it was possible to visualize the different structure of the studied areas, emphasizing the environmental diversity present despite presenting low floristic richness.