Texture and organic carbon contents do not impact amount of carbon protected in Malagasy soils
Soil organic carbon (SOC) is usually said to be well correlated with soil texture and soil aggregation. These relations generally suggest a physical and physicochemical protection of SOC within soil aggregates and on soil fine particles, respectively. Because there are few experimental evidences of...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Universidade de São Paulo
2013-06-01
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| Series: | Scientia Agricola |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000300009 |
| _version_ | 1818326114048671744 |
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| author | Tantely Razafimbelo Tiphaine Chevallier Alain Albrecht Lydie Chapuis-Lardy Fela Nirina Rakotondrasolo Roger Michellon Lilia Rabeharisoa Martial Bernoux |
| author_facet | Tantely Razafimbelo Tiphaine Chevallier Alain Albrecht Lydie Chapuis-Lardy Fela Nirina Rakotondrasolo Roger Michellon Lilia Rabeharisoa Martial Bernoux |
| author_sort | Tantely Razafimbelo |
| collection | DOAJ |
| description | Soil organic carbon (SOC) is usually said to be well correlated with soil texture and soil aggregation. These relations generally suggest a physical and physicochemical protection of SOC within soil aggregates and on soil fine particles, respectively. Because there are few experimental evidences of these relations on tropical soils, we tested the relations of soil variables (SOC and soil aggregate contents, and soil texture) with the amount of SOC physically protected in aggregates on a set of 15 Malagasy soils. The soil texture, the SOC and water stable macroaggregate (MA) contents and the amount of SOC physically protected inside aggregates, calculated as the difference of C mineralized by crushed and intact aggregates, were characterized. The relation between these variables was established. SOC content was significantly correlated with soil texture (clay+fine silt fraction) and with soil MA amount while protected SOC content was not correlated with soil MA amount. This lack of correlation might be attributed to the highest importance of physicochemical protection of SOC which is demonstrated by the positive relation between SOC and clay+fine silt fraction. |
| first_indexed | 2024-12-13T11:55:13Z |
| format | Article |
| id | doaj.art-bce2d3801df74dc58ab1d7b6602c6e01 |
| institution | Directory Open Access Journal |
| issn | 0103-9016 1678-992X |
| language | English |
| last_indexed | 2024-12-13T11:55:13Z |
| publishDate | 2013-06-01 |
| publisher | Universidade de São Paulo |
| record_format | Article |
| series | Scientia Agricola |
| spelling | doaj.art-bce2d3801df74dc58ab1d7b6602c6e012022-12-21T23:47:14ZengUniversidade de São PauloScientia Agricola0103-90161678-992X2013-06-01703204208Texture and organic carbon contents do not impact amount of carbon protected in Malagasy soilsTantely RazafimbeloTiphaine ChevallierAlain AlbrechtLydie Chapuis-LardyFela Nirina RakotondrasoloRoger MichellonLilia RabeharisoaMartial BernouxSoil organic carbon (SOC) is usually said to be well correlated with soil texture and soil aggregation. These relations generally suggest a physical and physicochemical protection of SOC within soil aggregates and on soil fine particles, respectively. Because there are few experimental evidences of these relations on tropical soils, we tested the relations of soil variables (SOC and soil aggregate contents, and soil texture) with the amount of SOC physically protected in aggregates on a set of 15 Malagasy soils. The soil texture, the SOC and water stable macroaggregate (MA) contents and the amount of SOC physically protected inside aggregates, calculated as the difference of C mineralized by crushed and intact aggregates, were characterized. The relation between these variables was established. SOC content was significantly correlated with soil texture (clay+fine silt fraction) and with soil MA amount while protected SOC content was not correlated with soil MA amount. This lack of correlation might be attributed to the highest importance of physicochemical protection of SOC which is demonstrated by the positive relation between SOC and clay+fine silt fraction.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000300009macroaggregatetropical soilssoil structurecarbon stabilization |
| spellingShingle | Tantely Razafimbelo Tiphaine Chevallier Alain Albrecht Lydie Chapuis-Lardy Fela Nirina Rakotondrasolo Roger Michellon Lilia Rabeharisoa Martial Bernoux Texture and organic carbon contents do not impact amount of carbon protected in Malagasy soils Scientia Agricola macroaggregate tropical soils soil structure carbon stabilization |
| title | Texture and organic carbon contents do not impact amount of carbon protected in Malagasy soils |
| title_full | Texture and organic carbon contents do not impact amount of carbon protected in Malagasy soils |
| title_fullStr | Texture and organic carbon contents do not impact amount of carbon protected in Malagasy soils |
| title_full_unstemmed | Texture and organic carbon contents do not impact amount of carbon protected in Malagasy soils |
| title_short | Texture and organic carbon contents do not impact amount of carbon protected in Malagasy soils |
| title_sort | texture and organic carbon contents do not impact amount of carbon protected in malagasy soils |
| topic | macroaggregate tropical soils soil structure carbon stabilization |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000300009 |
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