Spatial and temporal variability of CO2 emisions in soils under conventional tillage and no-till farming
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/7720 |
Resumo: | Agricultural soils can act as a carbon sink depending on the soil management practices employed. As a result of this functional duality, soil management systems are present in international documents relating to climate change mitigation. Agricultural practices are responsible for 14% of total greenhouse gas emissions (GHG’s) (MMA, 2009)(1). Conservation agriculture (CA) is one of the most effective agricultural systems for reducing CO2 emissions, as it increases the sequestration of atmospheric carbon in the soil. In order to assess the performance of CA in terms of CO2 emissions, a field trial was conducted comparing soil derived CO2 fluxes under No-till (NT) farming and under conventional tillage. Three pilot farms were selected in the cereal-growing area of southern Spain, located in Las Cabezas de San Juan (Seville), Carmona (Seville) and Cordoba. Each pilot farm comprises six experimental plots with an approximate area of five hectares; three of the six plots implement CA practices, while the other three use conventional tillage techniques. The subdivision of each tillage system into 3 plots allowed the simultaneous cropping of the three crops of the wheat-sunflower-legume rotation each year. Results showed that carbon dioxide emissions were 31 to 91% higher in tilled soils than in untilled soils, and that there was a great seasonal variability of CO2 emissions, as weather conditions also differed considerably for the different sampling periods. In all cases, the CO2 fluxes emitted into the atmosphere were always higher when soil was subject to conventional tillage. |
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Spatial and temporal variability of CO2 emisions in soils under conventional tillage and no-till farmingConventional tillageconservation agricultureno-till farmingCO2 emissionsAgricultural soils can act as a carbon sink depending on the soil management practices employed. As a result of this functional duality, soil management systems are present in international documents relating to climate change mitigation. Agricultural practices are responsible for 14% of total greenhouse gas emissions (GHG’s) (MMA, 2009)(1). Conservation agriculture (CA) is one of the most effective agricultural systems for reducing CO2 emissions, as it increases the sequestration of atmospheric carbon in the soil. In order to assess the performance of CA in terms of CO2 emissions, a field trial was conducted comparing soil derived CO2 fluxes under No-till (NT) farming and under conventional tillage. Three pilot farms were selected in the cereal-growing area of southern Spain, located in Las Cabezas de San Juan (Seville), Carmona (Seville) and Cordoba. Each pilot farm comprises six experimental plots with an approximate area of five hectares; three of the six plots implement CA practices, while the other three use conventional tillage techniques. The subdivision of each tillage system into 3 plots allowed the simultaneous cropping of the three crops of the wheat-sunflower-legume rotation each year. Results showed that carbon dioxide emissions were 31 to 91% higher in tilled soils than in untilled soils, and that there was a great seasonal variability of CO2 emissions, as weather conditions also differed considerably for the different sampling periods. In all cases, the CO2 fluxes emitted into the atmosphere were always higher when soil was subject to conventional tillage.ISTRO2013-01-25T11:54:17Z2013-01-252012-09-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/7720http://hdl.handle.net/10174/7720porCarbonell-Bojollo, R., González-Sánchez, E., Repullo Ruibérriz de Torres, M.A., Ordóñez-Fernández, R., and Basch, G. 2012. Spatial and temporal variability of co2 emisions in soils under conventional tillage and no-till farming. Proceedings of the 19th ISTRO Conference-Striving for Sustainable High Productivity, Sept. 24-28, Montevideo, Uruguay, Paper 181.Deptº de Fitotecniandndndndgb@uevora.ptCarbonell-Bojollo, R.González- Sánchez, E.Repullo Ruibérriz De Torres, M.A.Ordóñez- Fernández, R.Basch, G.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-08T03:57:42ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Spatial and temporal variability of CO2 emisions in soils under conventional tillage and no-till farming |
title |
Spatial and temporal variability of CO2 emisions in soils under conventional tillage and no-till farming |
spellingShingle |
Spatial and temporal variability of CO2 emisions in soils under conventional tillage and no-till farming Carbonell-Bojollo, R. Conventional tillage conservation agriculture no-till farming CO2 emissions |
title_short |
Spatial and temporal variability of CO2 emisions in soils under conventional tillage and no-till farming |
title_full |
Spatial and temporal variability of CO2 emisions in soils under conventional tillage and no-till farming |
title_fullStr |
Spatial and temporal variability of CO2 emisions in soils under conventional tillage and no-till farming |
title_full_unstemmed |
Spatial and temporal variability of CO2 emisions in soils under conventional tillage and no-till farming |
title_sort |
Spatial and temporal variability of CO2 emisions in soils under conventional tillage and no-till farming |
author |
Carbonell-Bojollo, R. |
author_facet |
Carbonell-Bojollo, R. González- Sánchez, E. Repullo Ruibérriz De Torres, M.A. Ordóñez- Fernández, R. Basch, G. |
author_role |
author |
author2 |
González- Sánchez, E. Repullo Ruibérriz De Torres, M.A. Ordóñez- Fernández, R. Basch, G. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Carbonell-Bojollo, R. González- Sánchez, E. Repullo Ruibérriz De Torres, M.A. Ordóñez- Fernández, R. Basch, G. |
dc.subject.por.fl_str_mv |
Conventional tillage conservation agriculture no-till farming CO2 emissions |
topic |
Conventional tillage conservation agriculture no-till farming CO2 emissions |
description |
Agricultural soils can act as a carbon sink depending on the soil management practices employed. As a result of this functional duality, soil management systems are present in international documents relating to climate change mitigation. Agricultural practices are responsible for 14% of total greenhouse gas emissions (GHG’s) (MMA, 2009)(1). Conservation agriculture (CA) is one of the most effective agricultural systems for reducing CO2 emissions, as it increases the sequestration of atmospheric carbon in the soil. In order to assess the performance of CA in terms of CO2 emissions, a field trial was conducted comparing soil derived CO2 fluxes under No-till (NT) farming and under conventional tillage. Three pilot farms were selected in the cereal-growing area of southern Spain, located in Las Cabezas de San Juan (Seville), Carmona (Seville) and Cordoba. Each pilot farm comprises six experimental plots with an approximate area of five hectares; three of the six plots implement CA practices, while the other three use conventional tillage techniques. The subdivision of each tillage system into 3 plots allowed the simultaneous cropping of the three crops of the wheat-sunflower-legume rotation each year. Results showed that carbon dioxide emissions were 31 to 91% higher in tilled soils than in untilled soils, and that there was a great seasonal variability of CO2 emissions, as weather conditions also differed considerably for the different sampling periods. In all cases, the CO2 fluxes emitted into the atmosphere were always higher when soil was subject to conventional tillage. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-09-01T00:00:00Z 2013-01-25T11:54:17Z 2013-01-25 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/7720 http://hdl.handle.net/10174/7720 |
url |
http://hdl.handle.net/10174/7720 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Carbonell-Bojollo, R., González-Sánchez, E., Repullo Ruibérriz de Torres, M.A., Ordóñez-Fernández, R., and Basch, G. 2012. Spatial and temporal variability of co2 emisions in soils under conventional tillage and no-till farming. Proceedings of the 19th ISTRO Conference-Striving for Sustainable High Productivity, Sept. 24-28, Montevideo, Uruguay, Paper 181. Deptº de Fitotecnia nd nd nd nd gb@uevora.pt |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
ISTRO |
publisher.none.fl_str_mv |
ISTRO |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
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repository.mail.fl_str_mv |
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1777304584771862528 |