Organic carbon stock in soils with rock fragments in an Andean micro-watershed
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| Auteurs: | , , , |
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| Formaat: | artículo original |
| Status: | Versión publicada |
| Publicatiedatum: | 2025 |
| Omschrijving: | [Objective] The objective was to estimate the carbon stock and its spatial distribution in soils of the Zanja Honda micro-watershed (Ibagué, Colombia). [Methodology] Hydrological Response Units were delineated, considering land cover, soil units, and the range of slopes. Based on the representativeness of these hydrological units, 46 sampling sites were identified. After locating sampling sites in the field, the following parameters were determined at each site: thickness of horizons, bulk density (core method), rock fragment content by weight and volume, and organic carbon concentration using the wet oxidation method. [Results] The most significant magnitudes in organic carbon content and soil organic carbon stock generally occur in the lower part of the micro-watershed (0.05 Mg ha-1); while the high slope areas in the middle-upper part present lower magnitudes of these variables (0.002 Mg ha-1). The soils studied store a total of 6736.3 Mg of organic carbon, which is generally stored in the first 0.3 m of the soil profile. [Conclusions] Micro-watershed soils exhibited lower organic carbon stocks compared to other studies conducted in the area, with carbon stocks primarily occurring in low areas with lower inclinations. This suggests that topographic variables play a significant role in determining carbon stocks in these soils. |
| Land: | Portal de Revistas UNA |
| Instelling: | Universidad Nacional de Costa Rica |
| Repositorio: | Portal de Revistas UNA |
| Taal: | Español |
| OAI Identifier: | oai:www.revistas.una.ac.cr:article/20359 |
| Online toegang: | https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/20359 |
| Keyword: | Climatic change Soil bulk density Inceptisols Entisols Soil profile Hydrologic Response Unit Cambio climático Densidad aparente del suelo Entisol Inceptisol Perfil de suelo Unidad de Respuesta Hidrológica mudança climática densidade aparente do solo entisol inceptisol perfil do solo unidade de resposta hidrológica |