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- W765508924 abstract "The predominant soils in the Amazon region belong to the class of Oxisols and Ultisols, characterized by its high degree of weathering and low natural fertility, in contrast, occur at Archaeological Dark Earths soils with high fertility and high organic matter content. The aim of this study was the physical and chemical characterization of archaeological dark earths and non-anthropogenic soils in the southern Amazon. Four archaeological sites with dark earths and four non-anthropogenic soils distributed in the Manicore region, souther Amazon, were sampled. In these locations, open trenches and profiles were characterized morphologically and collected by horizon. Physical (texture and bulk density) and chemical (pH, Ca, Mg, K, and Al, P, and organic C) analyses were realized. The values of pH, organic carbon, total bases and V% in archaeological dark earths were higher than those observed in the non-anthropogenic soils the Manicore, Amazon region. The non-anthropogenic soils showed higher bulk density compared to areas of archaeological dark earths. The highest levels of soil organic matter were found in areas of archaeological dark earths. The archaeological dark earths of this study show the chemical and physicchemical above the non-anthropogenic soils, giving them more fertile." @default.
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- W765508924 date "2012-01-01" @default.
- W765508924 modified "2023-09-26" @default.
- W765508924 title "Physical and chemical characterization of archaeological dark earths and nonanthropogenic soils the Manicore region, Amazon." @default.
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