Description
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In the high altitude (>3000 m asl) grasslands of Ecuador, the Páramo ecosystem, soils generally formed on recent volcanic ashes being < 10 000 years old in the northern and central part of the cordilleras. With time these soils evolved in to non-allophanic Andisols with hydric properties such as evidenced in profiles from the CAJAS massif located in the western central Cordillera. However soils at the Fierro Urcu massif and at the Oña plateau at the eastern Cordillera formed on a non-volcanic parent material. Compared to non-allophanic Andisols from the CAJAS massif, they present similar morphological properties with a dark 50 cm thick carbon-rich (80 to 120g kg-1) topsoil with a very low bulk density (< 0.65 g cm-3) and high water retention
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Keyword
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horizon type, horizon depth, horizon colour, horizon texture in field, horizon structure, horizon properties, soil water content, soil bulk density, soil pH, exchangeable complex, specific extractions, soil total carbon (STC), nitrogen (N), silicium (SiO2), titanium (TiO2), aluminum (Al2O3), iron (Fe2O3), manganese (MnO2), magnesium (MgO), calcium (CaO), sodium (Na2O), potassium (K), rare-earth elements, grain size distribution, mineralogy, X-ray crystallography, geographic dataset, soils, soil properties |
Notes
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