Soil organic carbon storage and dynamics after C3-C4and C4-C3vegetation changes in sub-Andean landscapes of Colombia

The soil C capture capacity and organic matter turnover rate vary according to photosynthetic pathways; therefore the evaluation of C at sites suffering changes from C3 to C4 vegetation and vice versa, is important to identify impacts of land use change on C cycle. This study aims to evaluate C stor...

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Autores principales:	Carvajal,Andres F, Feijoo,Alexander, Quintero,Heimar, Rondon,Marco A
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2013
Materias:	Carbon stable isotope 13C land use change organic matter turnover rate
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000400010
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spelling	oai:scielo:S0718-583920130004000102018-10-02Soil organic carbon storage and dynamics after C3-C4and C4-C3vegetation changes in sub-Andean landscapes of ColombiaCarvajal,Andres FFeijoo,AlexanderQuintero,HeimarRondon,Marco A Carbon stable isotope 13C land use change organic matter turnover rate The soil C capture capacity and organic matter turnover rate vary according to photosynthetic pathways; therefore the evaluation of C at sites suffering changes from C3 to C4 vegetation and vice versa, is important to identify impacts of land use change on C cycle. This study aims to evaluate C storage under different land uses, and soil C dynamics using the 13C technique to identify the origin of soil C. In the Municipality of Alcala, Department of Valle del Cauca, Colombia, the natural abundance of δ13C was estimated, and data on land use history were gathered to calculate the organic matter turnover rate. The contribution of each type of vegetation to total percentage organic C and to storage at 0.30 m was estimated at sites suffering changes from C3 to C4 vegetation and vice versa. Average δ13C ranged between -25.79 and -20.72% at the three depths evaluated. Over a period of 13 yr, mature fallow lands replaced more than 70% of the C fixed by pastures over a period of 60 yr, whereas paddocks, over a period of 17 yr, only managed to replace 37.9% of the C fixed by associated coffee plantations during a period of 50-100 years. We conclude that the use of 13C avoided that C storage would have been attributed to current land uses when they are actually fixed by previous vegetation; and that C deposit from C3 vegetation is recalcitrant, while that corresponding to C4 vegetation has a relatively fast turnover rate.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.73 n.4 20132013-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000400010en10.4067/S0718-58392013000400010
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Carbon stable isotope 13C land use change organic matter turnover rate
spellingShingle	Carbon stable isotope 13C land use change organic matter turnover rate Carvajal,Andres F Feijoo,Alexander Quintero,Heimar Rondon,Marco A Soil organic carbon storage and dynamics after C3-C4and C4-C3vegetation changes in sub-Andean landscapes of Colombia
description	The soil C capture capacity and organic matter turnover rate vary according to photosynthetic pathways; therefore the evaluation of C at sites suffering changes from C3 to C4 vegetation and vice versa, is important to identify impacts of land use change on C cycle. This study aims to evaluate C storage under different land uses, and soil C dynamics using the 13C technique to identify the origin of soil C. In the Municipality of Alcala, Department of Valle del Cauca, Colombia, the natural abundance of δ13C was estimated, and data on land use history were gathered to calculate the organic matter turnover rate. The contribution of each type of vegetation to total percentage organic C and to storage at 0.30 m was estimated at sites suffering changes from C3 to C4 vegetation and vice versa. Average δ13C ranged between -25.79 and -20.72% at the three depths evaluated. Over a period of 13 yr, mature fallow lands replaced more than 70% of the C fixed by pastures over a period of 60 yr, whereas paddocks, over a period of 17 yr, only managed to replace 37.9% of the C fixed by associated coffee plantations during a period of 50-100 years. We conclude that the use of 13C avoided that C storage would have been attributed to current land uses when they are actually fixed by previous vegetation; and that C deposit from C3 vegetation is recalcitrant, while that corresponding to C4 vegetation has a relatively fast turnover rate.
author	Carvajal,Andres F Feijoo,Alexander Quintero,Heimar Rondon,Marco A
author_facet	Carvajal,Andres F Feijoo,Alexander Quintero,Heimar Rondon,Marco A
author_sort	Carvajal,Andres F
title	Soil organic carbon storage and dynamics after C3-C4and C4-C3vegetation changes in sub-Andean landscapes of Colombia
title_short	Soil organic carbon storage and dynamics after C3-C4and C4-C3vegetation changes in sub-Andean landscapes of Colombia
title_full	Soil organic carbon storage and dynamics after C3-C4and C4-C3vegetation changes in sub-Andean landscapes of Colombia
title_fullStr	Soil organic carbon storage and dynamics after C3-C4and C4-C3vegetation changes in sub-Andean landscapes of Colombia
title_full_unstemmed	Soil organic carbon storage and dynamics after C3-C4and C4-C3vegetation changes in sub-Andean landscapes of Colombia
title_sort	soil organic carbon storage and dynamics after c3-c4and c4-c3vegetation changes in sub-andean landscapes of colombia
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000400010
work_keys_str_mv	AT carvajalandresf soilorganiccarbonstorageanddynamicsafterc3c4andc4c3vegetationchangesinsubandeanlandscapesofcolombia AT feijooalexander soilorganiccarbonstorageanddynamicsafterc3c4andc4c3vegetationchangesinsubandeanlandscapesofcolombia AT quinteroheimar soilorganiccarbonstorageanddynamicsafterc3c4andc4c3vegetationchangesinsubandeanlandscapesofcolombia AT rondonmarcoa soilorganiccarbonstorageanddynamicsafterc3c4andc4c3vegetationchangesinsubandeanlandscapesofcolombia
_version_	1714205328828006400

Soil organic carbon storage and dynamics after C3-C4and C4-C3vegetation changes in sub-Andean landscapes of Colombia

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