Carbon fractions as sensitive indicators of quality of soil organic matter
Soil 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 s...
| Autores principales: | , , , |
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| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
| Publicado: |
International Center for Tropical Agriculture
1999
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/55132 |
| _version_ | 1855524340671447040 |
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| author | Westerhof, R Vilela, Lourival Ayarza, Miguel Angel Zech, W. |
| author_browse | Ayarza, Miguel Angel Vilela, Lourival Westerhof, R Zech, W. |
| author_facet | Westerhof, R Vilela, Lourival Ayarza, Miguel Angel Zech, W. |
| author_sort | Westerhof, R |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Soil 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. |
| format | Book Chapter |
| id | CGSpace55132 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1999 |
| publishDateRange | 1999 |
| publishDateSort | 1999 |
| publisher | International Center for Tropical Agriculture |
| publisherStr | International Center for Tropical Agriculture |
| record_format | dspace |
| spelling | CGSpace551322024-01-17T12:58:34Z Carbon fractions as sensitive indicators of quality of soil organic matter Westerhof, R Vilela, Lourival Ayarza, Miguel Angel Zech, W. carbon nitrogen content mineralization oxisols potassium permanganate soil organic matter land use carbono contenido de nitrógeno mineralización oxisoles permanganato de potasio materia orgánica del suelo utilización de la tierra Soil 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. 1999 2015-01-28T14:17:28Z 2015-01-28T14:17:28Z Book Chapter https://hdl.handle.net/10568/55132 en Open Access International Center for Tropical Agriculture Westerhof, 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) |
| spellingShingle | carbon nitrogen content mineralization oxisols potassium permanganate soil organic matter land use carbono contenido de nitrógeno mineralización oxisoles permanganato de potasio materia orgánica del suelo utilización de la tierra Westerhof, R Vilela, Lourival Ayarza, Miguel Angel Zech, W. Carbon fractions as sensitive indicators of quality of soil organic matter |
| title | Carbon fractions as sensitive indicators of quality of soil organic matter |
| title_full | Carbon fractions as sensitive indicators of quality of soil organic matter |
| title_fullStr | Carbon fractions as sensitive indicators of quality of soil organic matter |
| title_full_unstemmed | Carbon fractions as sensitive indicators of quality of soil organic matter |
| title_short | Carbon fractions as sensitive indicators of quality of soil organic matter |
| title_sort | carbon fractions as sensitive indicators of quality of soil organic matter |
| topic | carbon nitrogen content mineralization oxisols potassium permanganate soil organic matter land use carbono contenido de nitrógeno mineralización oxisoles permanganato de potasio materia orgánica del suelo utilización de la tierra |
| url | https://hdl.handle.net/10568/55132 |
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