1. Characterization and classification of soils from an Amazonic Biome in western Pará.
- Author
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Pires Almada, Adão, Pinheiro Junior, Carlos Roberto, Gervasio Pereira, Marcos, Soares Reis, Iolanda Maria, Alves de Sousa, Mateus, da Silva Rodrigues Pinto, Luiz Alberto, and Queiroz dos Santos, Otávio Augusto
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SOIL classification , *SOIL profiles , *BIOMES , *INCEPTISOLS , *SOILS , *FLOODPLAINS - Abstract
Despite its great soil diversity, the Amazon Biome still lacks pedological studies that would also contributes to the Brazilian Soil Classification System. Based on this, this study aimed to characterize and classify the soils from an area in western Pará state. Six soil profiles were described and collected, characterized both physically and chemically, and then classified according to the Brazilian Soil Classification System. There were soils with anthropic influence with thick superficial horizons, with high levels of organic carbon, Ca2+, Mg2+ and P, differing from the observed pattern concerning non-anthropized soils. A great variability of texture was also observed due to the nature of parental material. A high weathering degree was found in the Entisols located in the floodplain area, with low activity clays and low base saturation. Due to observing a superficial diagnostic anthropic horizon A in "Cambissolos Háplicos" and "Húmicos" profiles, it is suggested to create the "antrópico" (anthropic) subgroup for these soil classes in the Brazilian Soil Classification System. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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