Effect of deforestation and subsequent land use management on soil carbon stocks in the South American Chaco

Autores
Osinaga, Natalia Andrea; Alvarez, Carina Rosa; Taboada, Miguel Angel
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Osinaga, Natalia Andrea. CONICET. Buenos Aires, Argentina.
Fil: Alvarez, Carina Rosa. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes. Buenos Aires, Argentina.
Fil: Taboada, Miguel Angel. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes. Buenos Aires, Argentina.
The subhumid Chaco region of Argentina, originally covered by dry sclerophyll forest, has been subjected to clearing since the end of the 1970s and replacement of the forest by no-till farming. Land use changes produced a decrease in aboveground carbon (C) stored in forests, but little is known about the impact on soil organic C stocks. The aim of this study was to evaluate soil C stocks and C fractions up to 1m depth in soils under different land use: smaller than 10-year continuous cropping, greater than 20-year continuous cropping, warm-season grass pasture and native forest in 32 sites distributed over the Chaco region. The organic C stock content up to 1mdepth expressed as equivalent mass varied as follows: forest (119.3Mgha-1) greater than pasture (87.9Mgha-1) greater than continuous cropping (71.9 and 77.3Mgha-1), with no impact of the number of years under cropping. The coarse particle fraction (2000–212 μm) at 0–5 and 5–20 cm depth layers was the most sensitive organic carbon fraction to land use change. Resistant carbon (smaller than 53 μm) was the main organic matter fraction in all sample categories except in the forest. Organic C stock, its quality and its distribution in the profile were responsive to land use change. The conversion of the Chaco forest to crops was associated with a decrease of organic C stock up to 1m depth and with the decrease of the labile fraction. The permanent pastures of warm-season grasses allowed higher C stocks to be sustained than cropping systems and so could be considered a sustainable land use system in terms of soil C preservation. As soil organic C losses were not restricted to the first few centimetres of the soil, the development of models that would allow the estimation of soil organic C changes in depth would be useful to evaluate the impact of land use change on C stocks with greater precision.
grafs., tbls., mapas
Fuente
Soil
Vol.4, no.4
251-257
https://www.copernicus.org
Nivel de accesibilidad
acceso abierto
Condiciones de uso
acceso abierto
Repositorio
FAUBA Digital (UBA-FAUBA)
Institución
Universidad de Buenos Aires. Facultad de Agronomía
OAI Identificador
snrd:2018osinaga

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network_name_str FAUBA Digital (UBA-FAUBA)
spelling Effect of deforestation and subsequent land use management on soil carbon stocks in the South American ChacoOsinaga, Natalia AndreaAlvarez, Carina RosaTaboada, Miguel AngelFil: Osinaga, Natalia Andrea. CONICET. Buenos Aires, Argentina.Fil: Alvarez, Carina Rosa. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes. Buenos Aires, Argentina.Fil: Taboada, Miguel Angel. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes. Buenos Aires, Argentina.The subhumid Chaco region of Argentina, originally covered by dry sclerophyll forest, has been subjected to clearing since the end of the 1970s and replacement of the forest by no-till farming. Land use changes produced a decrease in aboveground carbon (C) stored in forests, but little is known about the impact on soil organic C stocks. The aim of this study was to evaluate soil C stocks and C fractions up to 1m depth in soils under different land use: smaller than 10-year continuous cropping, greater than 20-year continuous cropping, warm-season grass pasture and native forest in 32 sites distributed over the Chaco region. The organic C stock content up to 1mdepth expressed as equivalent mass varied as follows: forest (119.3Mgha-1) greater than pasture (87.9Mgha-1) greater than continuous cropping (71.9 and 77.3Mgha-1), with no impact of the number of years under cropping. The coarse particle fraction (2000–212 μm) at 0–5 and 5–20 cm depth layers was the most sensitive organic carbon fraction to land use change. Resistant carbon (smaller than 53 μm) was the main organic matter fraction in all sample categories except in the forest. Organic C stock, its quality and its distribution in the profile were responsive to land use change. The conversion of the Chaco forest to crops was associated with a decrease of organic C stock up to 1m depth and with the decrease of the labile fraction. The permanent pastures of warm-season grasses allowed higher C stocks to be sustained than cropping systems and so could be considered a sustainable land use system in terms of soil C preservation. As soil organic C losses were not restricted to the first few centimetres of the soil, the development of models that would allow the estimation of soil organic C changes in depth would be useful to evaluate the impact of land use change on C stocks with greater precision.grafs., tbls., mapas2018articleinfo:eu-repo/semantics/articlepublishedVersioninfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfdoi:10.5194/soil-4-251-2018issn:2199-3971http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2018osinagaSoilVol.4, no.4251-257https://www.copernicus.orgreponame:FAUBA Digital (UBA-FAUBA)instname:Universidad de Buenos Aires. Facultad de Agronomíaenginfo:eu-repo/semantics/openAccessopenAccesshttp://ri.agro.uba.ar/greenstone3/library/page/biblioteca#section42025-09-04T09:44:50Zsnrd:2018osinagainstacron:UBA-FAUBAInstitucionalhttp://ri.agro.uba.ar/Universidad públicaNo correspondehttp://ri.agro.uba.ar/greenstone3/oaiserver?verb=ListSetsmartino@agro.uba.ar;berasa@agro.uba.ar ArgentinaNo correspondeNo correspondeNo correspondeopendoar:27292025-09-04 09:44:54.227FAUBA Digital (UBA-FAUBA) - Universidad de Buenos Aires. Facultad de Agronomíafalse
dc.title.none.fl_str_mv Effect of deforestation and subsequent land use management on soil carbon stocks in the South American Chaco
title Effect of deforestation and subsequent land use management on soil carbon stocks in the South American Chaco
spellingShingle Effect of deforestation and subsequent land use management on soil carbon stocks in the South American Chaco
Osinaga, Natalia Andrea
title_short Effect of deforestation and subsequent land use management on soil carbon stocks in the South American Chaco
title_full Effect of deforestation and subsequent land use management on soil carbon stocks in the South American Chaco
title_fullStr Effect of deforestation and subsequent land use management on soil carbon stocks in the South American Chaco
title_full_unstemmed Effect of deforestation and subsequent land use management on soil carbon stocks in the South American Chaco
title_sort Effect of deforestation and subsequent land use management on soil carbon stocks in the South American Chaco
dc.creator.none.fl_str_mv Osinaga, Natalia Andrea
Alvarez, Carina Rosa
Taboada, Miguel Angel
author Osinaga, Natalia Andrea
author_facet Osinaga, Natalia Andrea
Alvarez, Carina Rosa
Taboada, Miguel Angel
author_role author
author2 Alvarez, Carina Rosa
Taboada, Miguel Angel
author2_role author
author
dc.description.none.fl_txt_mv Fil: Osinaga, Natalia Andrea. CONICET. Buenos Aires, Argentina.
Fil: Alvarez, Carina Rosa. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes. Buenos Aires, Argentina.
Fil: Taboada, Miguel Angel. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes. Buenos Aires, Argentina.
The subhumid Chaco region of Argentina, originally covered by dry sclerophyll forest, has been subjected to clearing since the end of the 1970s and replacement of the forest by no-till farming. Land use changes produced a decrease in aboveground carbon (C) stored in forests, but little is known about the impact on soil organic C stocks. The aim of this study was to evaluate soil C stocks and C fractions up to 1m depth in soils under different land use: smaller than 10-year continuous cropping, greater than 20-year continuous cropping, warm-season grass pasture and native forest in 32 sites distributed over the Chaco region. The organic C stock content up to 1mdepth expressed as equivalent mass varied as follows: forest (119.3Mgha-1) greater than pasture (87.9Mgha-1) greater than continuous cropping (71.9 and 77.3Mgha-1), with no impact of the number of years under cropping. The coarse particle fraction (2000–212 μm) at 0–5 and 5–20 cm depth layers was the most sensitive organic carbon fraction to land use change. Resistant carbon (smaller than 53 μm) was the main organic matter fraction in all sample categories except in the forest. Organic C stock, its quality and its distribution in the profile were responsive to land use change. The conversion of the Chaco forest to crops was associated with a decrease of organic C stock up to 1m depth and with the decrease of the labile fraction. The permanent pastures of warm-season grasses allowed higher C stocks to be sustained than cropping systems and so could be considered a sustainable land use system in terms of soil C preservation. As soil organic C losses were not restricted to the first few centimetres of the soil, the development of models that would allow the estimation of soil organic C changes in depth would be useful to evaluate the impact of land use change on C stocks with greater precision.
grafs., tbls., mapas
description Fil: Osinaga, Natalia Andrea. CONICET. Buenos Aires, Argentina.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv article
info:eu-repo/semantics/article
publishedVersion
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv doi:10.5194/soil-4-251-2018
issn:2199-3971
http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2018osinaga
identifier_str_mv doi:10.5194/soil-4-251-2018
issn:2199-3971
url http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2018osinaga
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
openAccess
http://ri.agro.uba.ar/greenstone3/library/page/biblioteca#section4
eu_rights_str_mv openAccess
rights_invalid_str_mv openAccess
http://ri.agro.uba.ar/greenstone3/library/page/biblioteca#section4
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Soil
Vol.4, no.4
251-257
https://www.copernicus.org
reponame:FAUBA Digital (UBA-FAUBA)
instname:Universidad de Buenos Aires. Facultad de Agronomía
reponame_str FAUBA Digital (UBA-FAUBA)
collection FAUBA Digital (UBA-FAUBA)
instname_str Universidad de Buenos Aires. Facultad de Agronomía
repository.name.fl_str_mv FAUBA Digital (UBA-FAUBA) - Universidad de Buenos Aires. Facultad de Agronomía
repository.mail.fl_str_mv martino@agro.uba.ar;berasa@agro.uba.ar
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