Carbon fractions as sensitive indicators of quality of soil organic matter

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dc.creatorWesterhof, R
dc.creatorVilela, Lourival
dc.creatorAyarza, Miguel Angel
dc.creatorZech, W.
dc.date1999
dc.date2015-01-28T14:17:28Z
dc.date2015-01-28T14:17:28Z
dc.date.accessioned2026-06-27T14:38:28Z
dc.descriptionSoil organic matter quality is usually seen as a major attribute of soil quality. In this study, we extracted organic carbon with water (WEOC) or with potassium permanganate (PEOC). We assessed these extractions for their potential as sensitive indicators of the effect of land use on two important soil functions: biological activity and nutrient availability. Water-extractable organic carbon and PEOC were better correlated with C and N mineralization in the laboratory than were total and stable C, and were also more influenced by the mineralization flush that occurs at the beginning of the wet season. However, the more stable fraction also seemed to contribute to the pool of mineralizable C and N and was, within 5 years, significantly affected by changes in land use. Extraction of labile soil organic carbon with water and permanganate is an easy and valuable screening method for comparing the short-term effects of land-use systems on biological activity and nutrient availability in the soils of the Brazilian savannas.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/55132
dc.identifier.urihttp://hdl.handle.net/123456789/84105
dc.languageen
dc.publisherInternational Center for Tropical Agriculture
dc.rightsOpen Access
dc.sourceWesterhof, Roelof; Vilela, Lourival; Ayarza, Miguel Angel; Zech, Wolfgang. 1999. Carbon fractions as sensitive indicators of quality of soil organic matter. In: Thomas, Richard J.; Ayarza, Miguel Angel (eds.). Sustainable land management for the oxisols of the Latin American savannas: Dynamics of soil organic matter and indicators of soil quality. Centro Internacional de Agricultura Tropical (CIAT), Cali, CO. p. 123-132. (CIAT publication no. 312)
dc.subjectcarbon
dc.subjectnitrogen content
dc.subjectmineralization
dc.subjectoxisols
dc.subjectpotassium permanganate
dc.subjectsoil organic matter
dc.subjectland use
dc.subjectcarbono
dc.subjectcontenido de nitrógeno
dc.subjectmineralización
dc.subjectoxisoles
dc.subjectpermanganato de potasio
dc.subjectmateria orgánica del suelo
dc.subjectutilización de la tierra
dc.titleCarbon fractions as sensitive indicators of quality of soil organic matter
dc.typeBook Chapter

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Centro Internacional de Agricultura Tropical (CIAT)