Soils with latosolic morphology and cambic properties in Governador Valadares, Middle Rio Doce river, Minas Gerais region, Brazil: genesis and micromorphology
01/Feb/2008
In the middle Rio Doce Valley, with strong seasonal dry-wet alterations, Latosols, Cambisols and Argissols coexist, with greater chemical fertility in the latter. General regional observations indicate a certain mineral reserve in Latosols, which gives them a “cambic” character, as well a “Latosolic” morphology in the Cambisols. In this study, we analyzed the genesis and pedological characteristics of Latosols, associated Cambisols and an Argisol in two toposequences from the Desidério catchment, in the Upper Plateau of the Suaçui Pequeno/Corrente Grande […]
Genesis and micromorphology of soils under xeric vegetation in the Lakes region, State of Rio de Janeiro (Brazil)
01/Aug/2004
In the Lakes Region of Rio de Janeiro State, the occurrence of a drier climate creates a peculiar environment where there is a trend of salinization and presence of xeric vegetation. Physical, chemical, mineralogical and micromorphological properties were studied in selected soil transects. The soils are eutrophic as result of nutrient cycling, low weathering degree, and presence of primary minerals with nutrient reserves in their composition. The occurrence of well developed eutrophic soils (Oxisols) under caatinga (xeromorphic vegetation) on the […]