Modelling tillage and nitrogen fertilization effects on soil organic carbon dynamics

Agricultural management plays an important role in global warming mitigation due to its effects on soil organic carbon (SOC) dynamics. In Mediterranean agroecosystems, the interactive effects of tillage and N fertilization on SOC storage have scarcely been studied. Hence, we here present a modelling...

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Autores: Álvaro-Fuentes, Jorge, Morell Soler, Francisco Joaquín, Plaza Bonilla, Daniel, Arrúe, José Luis, Cantero-Martínez, Carlos
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2012
País:España
Institución:Universitat de Lleida (UdL)
Repositorio:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/65067
Acceso en línea:https://doi.org/10.1016/j.still.2012.01.009
http://hdl.handle.net/10459.1/65067
Access Level:acceso abierto
Palabra clave:Soil organic carbon modelling
Tillage
Nitrogen fertilization
Semiarid agroecosystems
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spelling Modelling tillage and nitrogen fertilization effects on soil organic carbon dynamicsÁlvaro-Fuentes, JorgeMorell Soler, Francisco JoaquínPlaza Bonilla, DanielArrúe, José LuisCantero-Martínez, CarlosSoil organic carbon modellingTillageNitrogen fertilizationSemiarid agroecosystemsAgricultural management plays an important role in global warming mitigation due to its effects on soil organic carbon (SOC) dynamics. In Mediterranean agroecosystems, the interactive effects of tillage and N fertilization on SOC storage have scarcely been studied. Hence, we here present a modelling study in which the effects of both tillage and N fertilization on SOC dynamics are investigated. We used SOC and C input data from a long-term (13 years) field study located in northeast Spain, firstly to validate both the Century model and the Rothamsted Carbon (RothC) model and secondly to predict future SOC dynamics until the year 2030. Tillage and N fertilization affected SOC stocks in the 0–30 cm soil layer. However, the interaction of the two factors was not significant. Averaged over the three N fertilization rates, the observed mean SOC stocks in conventional tillage (CT) and no-tillage (NT) were 29.8 and 36.8 Mg C ha−1, respectively. In addition, the observed SOC stocks, averaged for both tillage systems, increased with increasing N rates, with 30.6, 33.5 and 35.8 Mg C ha−1 for the 0, 60 and 120 kg N ha−1 rates, respectively. In general, both the Century model and the RothC model performed well in predicting SOC dynamics. Model predictions showed that in Mediterranean dryland agroecosystems SOC dynamics in the next 20 years would be variable according to the tillage and N fertilization applied. According to these predictions, scenarios with NT and high fertilization rates (e.g., 60–120 kg N ha−1) could lead to significant SOC sequestration and associated CO2 emission offsetting. However, these scenarios with high SOC sequestration rates also showed high mineral N accumulation in the soil profile with its associated environmental side effects.This work was supported by the Comisión Interministerial de Ciencia y Tecnología of Spain (Grants AGL2010-22050-C03-01/02) and the European Union (FEDER funds). We acknowledge the Consejo Superior de Investigaciones Cientificas (CSIC) for the contract granted to Jorge Álvaro-Fuentes within the “Junta para la Ampliación de Estudios” (JAE-DOC) programme co-financed by the European Social Fund. Furthermore, Daniel Plaza-Bonilla was awarded a FPU fellowship by the Spanish Ministry of Education.Elsevier2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttps://doi.org/10.1016/j.still.2012.01.009http://hdl.handle.net/10459.1/65067reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)Inglésinfo:eu-repo/grantAgreement/MICINN//AGL2010-22050-C03-01info:eu-repo/grantAgreement/MICINN//AGL2010-22050-C03-02Versió postprint del document publicat a https://doi.org/10.1016/j.still.2012.01.009Soil and Tillage Research, 2012, vol. 120, p. 32-39cc-by-nc-nd (c) Elsevier, 2012info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/oai:repositori.udl.cat:10459.1/650672026-06-24T12:42:17Z
dc.title.none.fl_str_mv Modelling tillage and nitrogen fertilization effects on soil organic carbon dynamics
title Modelling tillage and nitrogen fertilization effects on soil organic carbon dynamics
spellingShingle Modelling tillage and nitrogen fertilization effects on soil organic carbon dynamics
Álvaro-Fuentes, Jorge
Soil organic carbon modelling
Tillage
Nitrogen fertilization
Semiarid agroecosystems
title_short Modelling tillage and nitrogen fertilization effects on soil organic carbon dynamics
title_full Modelling tillage and nitrogen fertilization effects on soil organic carbon dynamics
title_fullStr Modelling tillage and nitrogen fertilization effects on soil organic carbon dynamics
title_full_unstemmed Modelling tillage and nitrogen fertilization effects on soil organic carbon dynamics
title_sort Modelling tillage and nitrogen fertilization effects on soil organic carbon dynamics
dc.creator.none.fl_str_mv Álvaro-Fuentes, Jorge
Morell Soler, Francisco Joaquín
Plaza Bonilla, Daniel
Arrúe, José Luis
Cantero-Martínez, Carlos
author Álvaro-Fuentes, Jorge
author_facet Álvaro-Fuentes, Jorge
Morell Soler, Francisco Joaquín
Plaza Bonilla, Daniel
Arrúe, José Luis
Cantero-Martínez, Carlos
author_role author
author2 Morell Soler, Francisco Joaquín
Plaza Bonilla, Daniel
Arrúe, José Luis
Cantero-Martínez, Carlos
author2_role author
author
author
author
dc.subject.none.fl_str_mv Soil organic carbon modelling
Tillage
Nitrogen fertilization
Semiarid agroecosystems
topic Soil organic carbon modelling
Tillage
Nitrogen fertilization
Semiarid agroecosystems
description Agricultural management plays an important role in global warming mitigation due to its effects on soil organic carbon (SOC) dynamics. In Mediterranean agroecosystems, the interactive effects of tillage and N fertilization on SOC storage have scarcely been studied. Hence, we here present a modelling study in which the effects of both tillage and N fertilization on SOC dynamics are investigated. We used SOC and C input data from a long-term (13 years) field study located in northeast Spain, firstly to validate both the Century model and the Rothamsted Carbon (RothC) model and secondly to predict future SOC dynamics until the year 2030. Tillage and N fertilization affected SOC stocks in the 0–30 cm soil layer. However, the interaction of the two factors was not significant. Averaged over the three N fertilization rates, the observed mean SOC stocks in conventional tillage (CT) and no-tillage (NT) were 29.8 and 36.8 Mg C ha−1, respectively. In addition, the observed SOC stocks, averaged for both tillage systems, increased with increasing N rates, with 30.6, 33.5 and 35.8 Mg C ha−1 for the 0, 60 and 120 kg N ha−1 rates, respectively. In general, both the Century model and the RothC model performed well in predicting SOC dynamics. Model predictions showed that in Mediterranean dryland agroecosystems SOC dynamics in the next 20 years would be variable according to the tillage and N fertilization applied. According to these predictions, scenarios with NT and high fertilization rates (e.g., 60–120 kg N ha−1) could lead to significant SOC sequestration and associated CO2 emission offsetting. However, these scenarios with high SOC sequestration rates also showed high mineral N accumulation in the soil profile with its associated environmental side effects.
publishDate 2012
dc.date.none.fl_str_mv 2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.still.2012.01.009
http://hdl.handle.net/10459.1/65067
url https://doi.org/10.1016/j.still.2012.01.009
http://hdl.handle.net/10459.1/65067
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICINN//AGL2010-22050-C03-01
info:eu-repo/grantAgreement/MICINN//AGL2010-22050-C03-02
Versió postprint del document publicat a https://doi.org/10.1016/j.still.2012.01.009
Soil and Tillage Research, 2012, vol. 120, p. 32-39
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Elsevier, 2012
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
rights_invalid_str_mv cc-by-nc-nd (c) Elsevier, 2012
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
reponame_str Repositori Obert UdL
collection Repositori Obert UdL
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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