Effects of land use on soil C02 flux in the Paramo de Guerrero, Colombia
The Andean paramo is an important global carbon sink and has a fundamental ecological function of capture, regulation and supply of water resources. The soil CO2 efflux is a natural process through which the carbon is released into the atmo sphere by molecular diffusion. The aim of this study was to establish the effect of different land use and soil managements practices over CO2 efflux in the Paramo de Guerrero, using the soil respiration chamber technique. We evaluated five differ ent land covers present in the Paramo de Guerrero (paramo vegetation, pasture, two tillage cover and potato crop). Our results show that soil respiration was lower in the paramo (0.42 g CO2 m-2 h-1) than in the others land uses, probably due to the higher moisture content (57.1% on average). The tillage practices showed a primary physical effect, continued by the increase of the velocity of biological and chemical processes drived by soil microorganisms, such as microbial respiration and organic matter mineralization. This study demostrates that moisture and soil temperature were not the main drivers of CO2 flux in the conditions of the Paramo de Guerrero, but the agricultural management and the land use affect differentially the accumulation and release dynamics of soil organic carbon to the atmosphere.
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Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias Agrarias
2016
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oai:www.revistas.unal.edu.co:article-587912019-06-18T15:36:49Z Effects of land use on soil C02 flux in the Paramo de Guerrero, Colombia Efectos del uso del suelo sobre el flujo de C02 del suelo en el Páramo de Guerrero, Colombia Peña-Quemba, Diego Rubiano-Sanabria, Yolanda Riveros-Iregui, Diego agricultural soil management carbon sinks climate change soil respiration tillage manejo agrícola del suelo sumideros de carbono cambio climático respiración de suelos arado The Andean paramo is an important global carbon sink and has a fundamental ecological function of capture, regulation and supply of water resources. The soil CO2 efflux is a natural process through which the carbon is released into the atmo sphere by molecular diffusion. The aim of this study was to establish the effect of different land use and soil managements practices over CO2 efflux in the Paramo de Guerrero, using the soil respiration chamber technique. We evaluated five differ ent land covers present in the Paramo de Guerrero (paramo vegetation, pasture, two tillage cover and potato crop). Our results show that soil respiration was lower in the paramo (0.42 g CO2 m-2 h-1) than in the others land uses, probably due to the higher moisture content (57.1% on average). The tillage practices showed a primary physical effect, continued by the increase of the velocity of biological and chemical processes drived by soil microorganisms, such as microbial respiration and organic matter mineralization. This study demostrates that moisture and soil temperature were not the main drivers of CO2 flux in the conditions of the Paramo de Guerrero, but the agricultural management and the land use affect differentially the accumulation and release dynamics of soil organic carbon to the atmosphere. El páramo es un importante sumidero de carbono global y además tiene funciones ecológicas fundamentales de captura, regulación y suministro del recurso hídrico. El flujo de CO2 del suelo es un proceso natural a través del cual el carbono es libe rado a la atmosfera por difusión molecular. El objetivo de este trabajo fue establecer los efectos de diferentes usos y prácticas de manejo del suelo sobre el flujo de CO2 en las condiciones del Páramo de Guerrero, usando la técnica de cámara de respira ción portátil de suelo. Se evaluaron cinco diferentes coberturas del suelo presentes (vegetación de páramo, pastura, dos lotes arados recientemente y cultivo de papa). Nuestros resultados muestran que la respiración en suelo fue más baja en el páramo (0.42 g CO2 m-2 h-1) que en otros usos del suelo, probablemente debido al alto contenido de humedad (57,1% en promedio). Las prácticas de labranza mostraron un efecto físico principal, seguido por el aumento de la velocidad de procesos biológicos y químicos conducido por los microorganismos del suelo, tales como la respiración microbiana y la mineralización de la materia orgánica. Este estudio demuestra que la humedad y la temperatura del suelo no son los controladores principales del flujo de CO2 del suelo en condiciones del páramo de Guerrero, pero el manejo agrícola y los cambios del uso del suelo afectan diferencialmente la dinámica de acumulación y liberación del carbono orgánico del suelo a la atmósfera. Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias Agrarias 2016-09-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf application/xml https://revistas.unal.edu.co/index.php/agrocol/article/view/58791 10.15446/agron.colomb.v34n3.58791 Agronomía Colombiana; Vol. 34 No. 3 (2016); 364-373 Agronomía Colombiana; Vol. 34 Núm. 3 (2016); 364-373 Agronomía Colombiana; v. 34 n. 3 (2016); 364-373 2357-3732 0120-9965 eng https://revistas.unal.edu.co/index.php/agrocol/article/view/58791/59178 https://revistas.unal.edu.co/index.php/agrocol/article/view/58791/60788 Copyright (c) 2016 Agronomía Colombiana https://creativecommons.org/licenses/by-nc-sa/4.0 |
| institution |
UNAL |
| collection |
OJS |
| country |
Colombia |
| countrycode |
CO |
| component |
Revista |
| access |
En linea |
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rev-agrocol |
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revista |
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America del Sur |
| libraryname |
tema Nacional de Bibliotecas de la UNAL |
| language |
eng |
| format |
Digital |
| author |
Peña-Quemba, Diego Rubiano-Sanabria, Yolanda Riveros-Iregui, Diego |
| spellingShingle |
Peña-Quemba, Diego Rubiano-Sanabria, Yolanda Riveros-Iregui, Diego Effects of land use on soil C02 flux in the Paramo de Guerrero, Colombia |
| author_facet |
Peña-Quemba, Diego Rubiano-Sanabria, Yolanda Riveros-Iregui, Diego |
| author_sort |
Peña-Quemba, Diego |
| title |
Effects of land use on soil C02 flux in the Paramo de Guerrero, Colombia |
| title_short |
Effects of land use on soil C02 flux in the Paramo de Guerrero, Colombia |
| title_full |
Effects of land use on soil C02 flux in the Paramo de Guerrero, Colombia |
| title_fullStr |
Effects of land use on soil C02 flux in the Paramo de Guerrero, Colombia |
| title_full_unstemmed |
Effects of land use on soil C02 flux in the Paramo de Guerrero, Colombia |
| title_sort |
effects of land use on soil c02 flux in the paramo de guerrero, colombia |
| description |
The Andean paramo is an important global carbon sink and has a fundamental ecological function of capture, regulation and supply of water resources. The soil CO2 efflux is a natural process through which the carbon is released into the atmo sphere by molecular diffusion. The aim of this study was to establish the effect of different land use and soil managements practices over CO2 efflux in the Paramo de Guerrero, using the soil respiration chamber technique. We evaluated five differ ent land covers present in the Paramo de Guerrero (paramo vegetation, pasture, two tillage cover and potato crop). Our results show that soil respiration was lower in the paramo (0.42 g CO2 m-2 h-1) than in the others land uses, probably due to the higher moisture content (57.1% on average). The tillage practices showed a primary physical effect, continued by the increase of the velocity of biological and chemical processes drived by soil microorganisms, such as microbial respiration and organic matter mineralization. This study demostrates that moisture and soil temperature were not the main drivers of CO2 flux in the conditions of the Paramo de Guerrero, but the agricultural management and the land use affect differentially the accumulation and release dynamics of soil organic carbon to the atmosphere. |
| publisher |
Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias Agrarias |
| publishDate |
2016 |
| url |
https://revistas.unal.edu.co/index.php/agrocol/article/view/58791 |
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