2009
DOI: 10.1590/s0100-06832009000100009
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Soil organic matter and fertility of anthropogenic dark earths (Terra Preta de Índio) in the Brazilian Amazon basin

Abstract: Fertility properties, total C (Ctot), and chemical soil organic matter fractions (fulvic acid fraction - FA, humic acid fraction - HA, humin fraction - H) of anthropogenic dark earths (Terra Preta de Índio) of the Amazon basin were compared with those of Ferralsols with no anthropogenic A horizon. Terra Preta soils had a higher fertility (pH: 5.1-5.4; Sum of bases, SB: 8.93-10.33 cmol c kg-1 , CEC: 17.2-17.5 cmol c kg-1 , V: 51-59 %, P: 116-291 mg kg-1) and Ctot (44.6-44.7 g kg-1) than adjacent Ferralsols (pH:… Show more

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Cited by 66 publications
(54 citation statements)
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References 18 publications
(19 reference statements)
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“…The higher values of CEC, SB, and V in ADE horizons confirm results observed in other areas of ADE, particularly in relation to Oxisols (Cunha et al 2009;Campos et al 2011). These results show how soil OC plays an essential role in providing sites for cation exchange.…”
Section: Discussionsupporting
confidence: 86%
See 1 more Smart Citation
“…The higher values of CEC, SB, and V in ADE horizons confirm results observed in other areas of ADE, particularly in relation to Oxisols (Cunha et al 2009;Campos et al 2011). These results show how soil OC plays an essential role in providing sites for cation exchange.…”
Section: Discussionsupporting
confidence: 86%
“…However, it is not only the amount of SOC that is responsible for the high CEC; the quality of the SOC actually has a greater effect. Studies have revealed that SOM in ADE contains higher amounts of carboxylic groups and phenolic groups compared to the surrounding soils, and thus, SOC in ADE has a higher CEC than the SOC in naturally occurring soils (Liang et al 2006;Zech et al 1990;Cunha et al 2009). …”
Section: Discussionmentioning
confidence: 99%
“…Altos valores de P é uma característica marcante das TPAs. Em sítios arqueológicos no Amazonas, Cunha et al (2009) encontraram valor de P de 116 mg kg -1 em áreas de TPA sob floresta, 290,5 mg kg -1 em TPA cultivada e 4,7 mg kg -1 em áreas não antropogênicas. A incorporação de resíduos orgânicos, especialmente espinhas de peixe, carapaças de quelônios, ossos de animais ou de seres humanos, ricos em P, contribuiu para o seu elevado teor nas TPAs (Lima et al 2002).…”
Section: Methodsunclassified
“…Vários trabalhos foram realizados visando caracterizar os atributos dos solos da região amazônica; dentre esses, podem-se destacar Cunha et al (2009) e Campos et al (2011, os quais estudaram Terras Pretas Arqueológicas; Campos et al (2012), os quais pesquisaram solos ocupados por florestas; e Perin et al (2009), os quais trabalharam com solos sob manejo de pastagem. Entretanto, há ausência de trabalhos que visam estudar a distribuição dos atributos do solo em ambientes naturais e cultivados na Amazônia ocidental.…”
Section: Introductionunclassified