Changes in soil N2O emissions and nitrogen use efficiency following long-term soil carbon storage: Evidence from a mesocosm experiment

Policy and market incentives are rapidly expanding to promote soil organic carbon (SOC) sequestration in global croplands. Evidence suggests that long-term increases in SOC can influence both crop yield and nitrogen (N) fertilizer requirements, with the potential to help address two important sustai...

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Autores: Kelley, Lindsey A., Zhang, Zhenglin, Tamagno, Santiago, Lundy, Mark E., Mitchell, Jeffrey P., Gaudin, Amélie C. M., Pittelkow, Cameron M.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Universitat de Lleida (UdL)
Repositorio:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/465795
Acceso en línea:https://doi.org/10.1016/j.agee.2024.109054
https://hdl.handle.net/10459.1/465795
Access Level:acceso abierto
Palabra clave:Nitrous oxide emissions
Soil organic carbon
Crop yield
Wheat
Nitrogen fertilizer
Climate change mitigation
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spelling Changes in soil N2O emissions and nitrogen use efficiency following long-term soil carbon storage: Evidence from a mesocosm experimentKelley, Lindsey A.Zhang, ZhenglinTamagno, SantiagoLundy, Mark E.Mitchell, Jeffrey P.Gaudin, Amélie C. M.Pittelkow, Cameron M.Nitrous oxide emissionsSoil organic carbonCrop yieldWheatNitrogen fertilizerClimate change mitigationPolicy and market incentives are rapidly expanding to promote soil organic carbon (SOC) sequestration in global croplands. Evidence suggests that long-term increases in SOC can influence both crop yield and nitrogen (N) fertilizer requirements, with the potential to help address two important sustainability challenges. However, increases in SOC may also trigger higher soil nitrous oxide (N2O) emissions, which would represent an important tradeoff for climate change mitigation. We tested the hypothesis that long-term increases in SOC are associated with higher crop yields and fertilizer N use efficiency (NUE), but at the cost of higher N2O emissions. Wheat was grown in two soils (SOClow and SOChigh) under three N fertilizer rates (0, 100, and 200 kg N ha−1) in a mesocosm experiment. Soils were obtained (0-25 cm) from a 22-yr field experiment on no-till and cover cropping in California. Results indicate that total biomass and grain yield were higher for SOClow than SOChigh at 100 kg N ha−1 but not the other N levels. Crop N uptake was also 28% greater for SOClow at 200 kg N ha−1, resulting in higher overall NUE. Soil N2O emissions increased for SOChigh by 25-112% compared to SOClow, likely due to long-term changes in labile C and N pools, microbial activity, and soil structure influencing porosity and gas diffusion. While there are well-documented crop and environmental benefits from enhancing SOC in agricultural soils, results from this study suggest that changes in soil N2O emissions should be considered to accurately determine net GHG emission reductions.This work was supported by the USDA National Institute of Food and Agriculture (Hatch project 1023920) and the California Agricultural Experiment Station within the College of Agriculture and Environmental Sciences, UC Davis. We appreciate the help and generosity of Bruno Pitton, Josh Hegarty, Ryan Eadry, and Bruce Linquist in methods development and GC sample analysis at UC Davis. ZZ acknowledges the Department of Plant Sciences, UC Davis for the award of a GSR scholarship funded by endowments, particularly the James Monroe McDonald Endowment, administered by UCANR.Elsevier2024info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://doi.org/10.1016/j.agee.2024.109054https://hdl.handle.net/10459.1/465795reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)InglésReproducció del document publicat a: https://doi.org/10.1016/j.agee.2024.109054Agriculture Ecosystems & Environment, 2024, vol. 370, 109054cc-by-nc, (c) Kelley et al., 2024info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc/4.0/oai:repositori.udl.cat:10459.1/4657952026-06-24T12:42:17Z
dc.title.none.fl_str_mv Changes in soil N2O emissions and nitrogen use efficiency following long-term soil carbon storage: Evidence from a mesocosm experiment
title Changes in soil N2O emissions and nitrogen use efficiency following long-term soil carbon storage: Evidence from a mesocosm experiment
spellingShingle Changes in soil N2O emissions and nitrogen use efficiency following long-term soil carbon storage: Evidence from a mesocosm experiment
Kelley, Lindsey A.
Nitrous oxide emissions
Soil organic carbon
Crop yield
Wheat
Nitrogen fertilizer
Climate change mitigation
title_short Changes in soil N2O emissions and nitrogen use efficiency following long-term soil carbon storage: Evidence from a mesocosm experiment
title_full Changes in soil N2O emissions and nitrogen use efficiency following long-term soil carbon storage: Evidence from a mesocosm experiment
title_fullStr Changes in soil N2O emissions and nitrogen use efficiency following long-term soil carbon storage: Evidence from a mesocosm experiment
title_full_unstemmed Changes in soil N2O emissions and nitrogen use efficiency following long-term soil carbon storage: Evidence from a mesocosm experiment
title_sort Changes in soil N2O emissions and nitrogen use efficiency following long-term soil carbon storage: Evidence from a mesocosm experiment
dc.creator.none.fl_str_mv Kelley, Lindsey A.
Zhang, Zhenglin
Tamagno, Santiago
Lundy, Mark E.
Mitchell, Jeffrey P.
Gaudin, Amélie C. M.
Pittelkow, Cameron M.
author Kelley, Lindsey A.
author_facet Kelley, Lindsey A.
Zhang, Zhenglin
Tamagno, Santiago
Lundy, Mark E.
Mitchell, Jeffrey P.
Gaudin, Amélie C. M.
Pittelkow, Cameron M.
author_role author
author2 Zhang, Zhenglin
Tamagno, Santiago
Lundy, Mark E.
Mitchell, Jeffrey P.
Gaudin, Amélie C. M.
Pittelkow, Cameron M.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Nitrous oxide emissions
Soil organic carbon
Crop yield
Wheat
Nitrogen fertilizer
Climate change mitigation
topic Nitrous oxide emissions
Soil organic carbon
Crop yield
Wheat
Nitrogen fertilizer
Climate change mitigation
description Policy and market incentives are rapidly expanding to promote soil organic carbon (SOC) sequestration in global croplands. Evidence suggests that long-term increases in SOC can influence both crop yield and nitrogen (N) fertilizer requirements, with the potential to help address two important sustainability challenges. However, increases in SOC may also trigger higher soil nitrous oxide (N2O) emissions, which would represent an important tradeoff for climate change mitigation. We tested the hypothesis that long-term increases in SOC are associated with higher crop yields and fertilizer N use efficiency (NUE), but at the cost of higher N2O emissions. Wheat was grown in two soils (SOClow and SOChigh) under three N fertilizer rates (0, 100, and 200 kg N ha−1) in a mesocosm experiment. Soils were obtained (0-25 cm) from a 22-yr field experiment on no-till and cover cropping in California. Results indicate that total biomass and grain yield were higher for SOClow than SOChigh at 100 kg N ha−1 but not the other N levels. Crop N uptake was also 28% greater for SOClow at 200 kg N ha−1, resulting in higher overall NUE. Soil N2O emissions increased for SOChigh by 25-112% compared to SOClow, likely due to long-term changes in labile C and N pools, microbial activity, and soil structure influencing porosity and gas diffusion. While there are well-documented crop and environmental benefits from enhancing SOC in agricultural soils, results from this study suggest that changes in soil N2O emissions should be considered to accurately determine net GHG emission reductions.
publishDate 2024
dc.date.none.fl_str_mv 2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.agee.2024.109054
https://hdl.handle.net/10459.1/465795
url https://doi.org/10.1016/j.agee.2024.109054
https://hdl.handle.net/10459.1/465795
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1016/j.agee.2024.109054
Agriculture Ecosystems & Environment, 2024, vol. 370, 109054
dc.rights.none.fl_str_mv cc-by-nc, (c) Kelley et al., 2024
info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc/4.0/
rights_invalid_str_mv cc-by-nc, (c) Kelley et al., 2024
https://creativecommons.org/licenses/by-nc/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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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