Mollisol BR
A representative soil profile of a Mollisol from the Cerado physiographic region--a vast tropical savanna ecoregion of Brazil, particularly in the states of Goiás, Mato Grosso do Sul, Mato Grosso, Tocantins, Minas Gerais and the Federal District of Brazil. (Horizonation is by Brazil soil classification system.)
Landscape: Typical landscape and vegetation (pastureland) occurring on upland side-slopes in Brazil.
Mollisols are a soil order in USDA soil taxonomy. Mollisols form in semi-arid to semi-humid areas, typically under a grassland cover. They are most commonly found in the mid-latitudes, namely in North America, mostly east of the Rocky Mountains, in South America in Argentina (Pampas) and Brazil, and in Asia in Mongolia and the Russian Steppes. Their parent material is typically base-rich and calcareous and include limestone, loess, or wind-blown sand. The main processes that lead to the formation of grassland Mollisols are melanisation, decomposition, humification and pedoturbation.
Mollisols have deep, high organic matter, nutrient-enriched surface soil (A horizon), typically more than 25 cm thick. This fertile surface horizon, known as a mollic epipedon, is the defining diagnostic feature of Mollisols. Mollic epipedons result from the long-term addition of organic materials derived from plant roots, and typically have soft, granular soil structure.
In the Brazil soil classification system, these Chernossolos are well structured soils, rich in organic matter, with high content of exchangeable cations. They are typically found in the south and east parts of Brazil.
For additional information about these soils, visit:
sites.google.com/site/soil350brazilsoilsla/soil-formation...
and...
For additional information about U.S. soil classification, visit:
www.nrcs.usda.gov/wps/portal/nrcs/main/soils/survey/class...
Mollisol BR
A representative soil profile of a Mollisol from the Cerado physiographic region--a vast tropical savanna ecoregion of Brazil, particularly in the states of Goiás, Mato Grosso do Sul, Mato Grosso, Tocantins, Minas Gerais and the Federal District of Brazil. (Horizonation is by Brazil soil classification system.)
Landscape: Typical landscape and vegetation (pastureland) occurring on upland side-slopes in Brazil.
Mollisols are a soil order in USDA soil taxonomy. Mollisols form in semi-arid to semi-humid areas, typically under a grassland cover. They are most commonly found in the mid-latitudes, namely in North America, mostly east of the Rocky Mountains, in South America in Argentina (Pampas) and Brazil, and in Asia in Mongolia and the Russian Steppes. Their parent material is typically base-rich and calcareous and include limestone, loess, or wind-blown sand. The main processes that lead to the formation of grassland Mollisols are melanisation, decomposition, humification and pedoturbation.
Mollisols have deep, high organic matter, nutrient-enriched surface soil (A horizon), typically more than 25 cm thick. This fertile surface horizon, known as a mollic epipedon, is the defining diagnostic feature of Mollisols. Mollic epipedons result from the long-term addition of organic materials derived from plant roots, and typically have soft, granular soil structure.
In the Brazil soil classification system, these Chernossolos are well structured soils, rich in organic matter, with high content of exchangeable cations. They are typically found in the south and east parts of Brazil.
For additional information about these soils, visit:
sites.google.com/site/soil350brazilsoilsla/soil-formation...
and...
For additional information about U.S. soil classification, visit:
www.nrcs.usda.gov/wps/portal/nrcs/main/soils/survey/class...