CARBON FIXING CAPACITY OF AMAZONIAN SOILS IN RELATION TO ITS DEGRADATION CONDITIONS
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Escuela de Ingeniería de Antioquia
2015
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| _version_ | 1876471507195002880 |
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| author | Clara Patricia Peña Venegas |
| author_facet | Clara Patricia Peña Venegas |
| contents | CARBON FIXING CAPACITY OF AMAZONIAN SOILS IN RELATION TO ITS DEGRADATION CONDITIONS Clara Patricia Peña Venegas Edmundo Rafael Mendoza Olmos Carlos Hernando Rodríguez León Gladys Inés Cardona Vanegas Bernardo Eusebio Betancurt Parra Maolenmarx Tatiana Garzón Gómez Ingeniería Emotions Setting C Degradation Amazonian Soils Amazonian deforestation and transformation alert about their effects worldwide. One concern is the increase of the Carbon (C) levels emitted. Previous works have estimated the fixed C in Amazon forests without including the C stored in soils. Within soil, the organic carbon molecules are highly sensitive to degradation, affecting the natural capacity of soils to fix and store C. The present study evaluates the impact of degradation in the natural capacity of Amazon soils to fix C. Thirty five farms with different typology were selected in Caquetá department which hold the highest deforestation and soil degradation rates in the Colombian Amazon. Soil samples were taken from natural forest relicts, cropping areas and introduced pastures of the farms, in locations with high, intermediate and low soil degradation. Aerial biomass was estimated in pastures with different level of soil degradation. Changes in the labile C stock were estimated from the soil organic carbon and the microbial biomass using substrate induced respiration. Results showed that the main C pool is in the natural forest relicts and the crops of the farms, independently from the size or type of farm sampled. The hills with higher intervention showed the lowest soil C fixation capacities. The soil C fixation capacity was related with changes in the soil microbial composition where conserved soils store preferentially C as fungal biomass while degraded soils store C as bacterial biomass. These estimations contribute to establish the cost of sustainability and soil degradation in the Colombian Amazon. 2015 artículo científico 1794-1237 https://www.redalyc.org/articulo.oa?id=149240052003 en http://www.redalyc.org/revista.oa?id=1492 Revista EIA application/pdf Escuela de Ingeniería de Antioquia Revista EIA (Colombia) Num.2 Vol.12 |
| format | Artículo científico |
| id | redalyc_149240052003 |
| institution | Redalyc |
| language | en |
| publishDate | 2015 |
| publisher | Escuela de Ingeniería de Antioquia |
| spellingShingle | CARBON FIXING CAPACITY OF AMAZONIAN SOILS IN RELATION TO ITS DEGRADATION CONDITIONS Clara Patricia Peña Venegas Ingeniería Emotions Setting C Degradation Amazonian Soils CARBON FIXING CAPACITY OF AMAZONIAN SOILS IN RELATION TO ITS DEGRADATION CONDITIONS Clara Patricia Peña Venegas Edmundo Rafael Mendoza Olmos Carlos Hernando Rodríguez León Gladys Inés Cardona Vanegas Bernardo Eusebio Betancurt Parra Maolenmarx Tatiana Garzón Gómez Ingeniería Emotions Setting C Degradation Amazonian Soils Amazonian deforestation and transformation alert about their effects worldwide. One concern is the increase of the Carbon (C) levels emitted. Previous works have estimated the fixed C in Amazon forests without including the C stored in soils. Within soil, the organic carbon molecules are highly sensitive to degradation, affecting the natural capacity of soils to fix and store C. The present study evaluates the impact of degradation in the natural capacity of Amazon soils to fix C. Thirty five farms with different typology were selected in Caquetá department which hold the highest deforestation and soil degradation rates in the Colombian Amazon. Soil samples were taken from natural forest relicts, cropping areas and introduced pastures of the farms, in locations with high, intermediate and low soil degradation. Aerial biomass was estimated in pastures with different level of soil degradation. Changes in the labile C stock were estimated from the soil organic carbon and the microbial biomass using substrate induced respiration. Results showed that the main C pool is in the natural forest relicts and the crops of the farms, independently from the size or type of farm sampled. The hills with higher intervention showed the lowest soil C fixation capacities. The soil C fixation capacity was related with changes in the soil microbial composition where conserved soils store preferentially C as fungal biomass while degraded soils store C as bacterial biomass. These estimations contribute to establish the cost of sustainability and soil degradation in the Colombian Amazon. 2015 artículo científico 1794-1237 https://www.redalyc.org/articulo.oa?id=149240052003 en http://www.redalyc.org/revista.oa?id=1492 Revista EIA application/pdf Escuela de Ingeniería de Antioquia Revista EIA (Colombia) Num.2 Vol.12 |
| title | CARBON FIXING CAPACITY OF AMAZONIAN SOILS IN RELATION TO ITS DEGRADATION CONDITIONS |
| topic | Ingeniería Emotions Setting C Degradation Amazonian Soils |
| url | https://www.redalyc.org/articulo.oa?id=149240052003 |