Over the past three decades, tropical forest clearing and burning have greatly altered the Amazonian landscape by increasing the cover of pastures and secondary forests. The alteration of biogeochemical processes on these lands is of particular interest on highly weathered Oxisols that cover large areas in the region because of concerns regarding possible nutrient limitation in agricultural land uses and during forest regrowth. The objectives of this study were to quantify (1) the reaccumulation of nutrients in biomass of secondary land uses, (2) changes in soil nutrient contents, (3) internal nutrient cycles, and (4) input–output budgets for the landscape mosaic.
Amazônia em Pauta 4: A revolução tecnológica do IBAMA e os limites do comando e controle na Amazônia
O desmatamento é uma das principais fontes de gases do efeito estufa, contribuindo com 15% das emissões em nível global. Após décadas de altas taxas de desmatamento na Amazônia brasileira, entre 2005 e 2012 foi possível observar reduções significativas na...