Rela??o entre vegeta??o e pedoformas na Mata do Paraiso, Município de Vi?osa, Minas Gerais

摘要

The Mata do Paraíso is originated in regeneration, making up secondary vegetation whose typology is Semidecídua Estacional Forest. In the Zona da Mata from Minas Gerais State, the Latosols predominate and this category is, also, the most present in the Vi?osa's region where the soils are, generally, nutritive poor. Thus, it was looked for associating some characteristics of soils from "Mata do Paraíso" in specified order to relationate them with the evolution of different kinds of toposequences, presents in the studied area, and the local arboreous vegetation. Samples were gathered inside the 40 parcels, the same ones utilized for the vegetation study. Samples weretaken away from 0 to 20cm, 20 to 50cm and 50 to 100cm of depth in three different points. TFSA textural analysis of the soil was performed, as well as, density of soil, pH, total organic carbonic, Ca, Mg, Al, K and P. Based on the results achieved, the sum of the basis was calculated (SP), the cationic change capacity (T) and effective (t), saturating for basis (V) and saturating for Al. The remainders P were also determinated. Using the vegetation as the best ambient indicator, it can be perceived more species at the hillside, but with small plants and, following, the Ravine, with bigger trees. On the Hillside, the soil is poorer than the Ravine's and more subordinate to laminar erosion. In this case, the natures' option would be increase the recycledefficiency by the diversity, what the species would be doing by its self benefit. The Top is too poor, that limits individuals of bigger size and diameter, as well as its self diversity. The pioneer species, in this case, would have a fundamental role in maintaining or in the "formation" of this soil fertility. The texture, it is perceived that is possible separating on the 3 depths, 2 ambient groups: on Plan e the Top present a texture more homogeneous and Ravine and Hillside more heterogeneous.