Long-term zero-tillage enhances the protection of soil carbon in tropical agriculture
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1111/ejss.13111 http://hdl.handle.net/11449/210300 |
Resumo: | Contrasting tillage strategies not only affect the stability and formation of soil aggregates but also modify the concentration and thermostability of soil organic matter associated with soil aggregates. Understanding the thermostability and carbon retention ability of aggregates under different tillage systems is essential to ascertain potential terrestrial carbon storage. We characterized the concentration and thermostability of soil organic carbon (SOC) within various aggregate size classes under both zero and conventional tillage using novel Rock-Eval pyrolysis. The nature of the pore systems was visualized and quantified by X-ray computed tomography to link soil structure to organic carbon preservation and thermostability. Soil samples were collected from experimental fields in Botucatu, Brazil, which had been under zero-tillage for 2, 15 and 31 years, and from adjacent fields under conventional tillage. Soils under zero-tillage significantly increased pore connectivity whilst simultaneously decreasing interaggregate porosity, providing a potential physical mechanism for protection of SOC in the 0-20-cm soil layer. Changes in the soil physical characteristics associated with the adoption of zero-tillage resulted in improved aggregate formation compared to conventionally tilled soils, especially when implemented for at least 15 years. In addition, we identified a chemical change in composition of organic carbon to a more recalcitrant fraction following conversion to zero-tillage, suggesting aggregates were accumulating rather than mineralizing SOC. These data reveal profound effects of different tillage systems upon soil structural modification, with important implications for the potential of zero-tillage to increase carbon sequestration compared to conventional tillage. Highlights Different tillage systems may affect SOC thermostability and C retention potentials of soil aggregates. SOC thermostability was characterised by Rock-Eval pyrolysis and pore systems were quantified by X-ray CT within aggregate size classes. Profound effects of zero versus conventional tillage upon soil structural modification were observed Important implications for zero-tillage to increase C sequestration versus conventional tillage. |
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Long-term zero-tillage enhances the protection of soil carbon in tropical agricultureno‐tillRock‐Eval pyrolysissoil carbonsoil structuretillageX‐ray computed tomographyContrasting tillage strategies not only affect the stability and formation of soil aggregates but also modify the concentration and thermostability of soil organic matter associated with soil aggregates. Understanding the thermostability and carbon retention ability of aggregates under different tillage systems is essential to ascertain potential terrestrial carbon storage. We characterized the concentration and thermostability of soil organic carbon (SOC) within various aggregate size classes under both zero and conventional tillage using novel Rock-Eval pyrolysis. The nature of the pore systems was visualized and quantified by X-ray computed tomography to link soil structure to organic carbon preservation and thermostability. Soil samples were collected from experimental fields in Botucatu, Brazil, which had been under zero-tillage for 2, 15 and 31 years, and from adjacent fields under conventional tillage. Soils under zero-tillage significantly increased pore connectivity whilst simultaneously decreasing interaggregate porosity, providing a potential physical mechanism for protection of SOC in the 0-20-cm soil layer. Changes in the soil physical characteristics associated with the adoption of zero-tillage resulted in improved aggregate formation compared to conventionally tilled soils, especially when implemented for at least 15 years. In addition, we identified a chemical change in composition of organic carbon to a more recalcitrant fraction following conversion to zero-tillage, suggesting aggregates were accumulating rather than mineralizing SOC. These data reveal profound effects of different tillage systems upon soil structural modification, with important implications for the potential of zero-tillage to increase carbon sequestration compared to conventional tillage. Highlights Different tillage systems may affect SOC thermostability and C retention potentials of soil aggregates. SOC thermostability was characterised by Rock-Eval pyrolysis and pore systems were quantified by X-ray CT within aggregate size classes. Profound effects of zero versus conventional tillage upon soil structural modification were observed Important implications for zero-tillage to increase C sequestration versus conventional tillage.Biotechnology and Biological Sciences Research CouncilNatural Environment Research Council through a Soils Training and Research Studentships (STARS) grantFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)FAPEG-Goias Research FoundationFAPEMA-MaranhAo Research FoundationUniv Nottingham, Div Agr & Environm Sci, Nottingham, EnglandCranfield Univ, Cranfield Soil & Agrifood Inst, Bedford, EnglandBritish Geol Survey, Ctr Environm Geochem, Keyworth, Notts, EnglandSao Paulo State Univ, Dept Crop Sci, Botucatu, SP, BrazilSao Paulo State Univ, Dept Crop Sci, Botucatu, SP, BrazilNatural Environment Research Council through a Soils Training and Research Studentships (STARS) grant: NE/M009106/1FAPESP: 2015/50305-8FAPEG-Goias Research Foundation: 2015-10267001479FAPEMA-MaranhAo Research Foundation: RCUK-02771/16Biotechnology and Biological Sciences Research Council: BB/N013201/1Wiley-BlackwellUniv NottinghamCranfield UnivBritish Geol SurveyUniversidade Estadual Paulista (Unesp)Cooper, Hannah V.Sjogersten, SofieLark, Richard M.Girkin, Nicholas T.Vane, Christopher H.Calonego, Juliano C. [UNESP]Rosolem, Ciro [UNESP]Mooney, Sacha J.2021-06-25T15:04:11Z2021-06-25T15:04:11Z2021-05-05info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article16http://dx.doi.org/10.1111/ejss.13111European Journal Of Soil Science. Hoboken: Wiley, 16 p., 2021.1351-0754http://hdl.handle.net/11449/21030010.1111/ejss.13111WOS:00064723740000157207758732595280000-0003-2001-0874Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEuropean Journal Of Soil Scienceinfo:eu-repo/semantics/openAccess2024-04-30T15:56:42Zoai:repositorio.unesp.br:11449/210300Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-04-30T15:56:42Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Long-term zero-tillage enhances the protection of soil carbon in tropical agriculture |
title |
Long-term zero-tillage enhances the protection of soil carbon in tropical agriculture |
spellingShingle |
Long-term zero-tillage enhances the protection of soil carbon in tropical agriculture Cooper, Hannah V. no‐ till Rock‐ Eval pyrolysis soil carbon soil structure tillage X‐ ray computed tomography |
title_short |
Long-term zero-tillage enhances the protection of soil carbon in tropical agriculture |
title_full |
Long-term zero-tillage enhances the protection of soil carbon in tropical agriculture |
title_fullStr |
Long-term zero-tillage enhances the protection of soil carbon in tropical agriculture |
title_full_unstemmed |
Long-term zero-tillage enhances the protection of soil carbon in tropical agriculture |
title_sort |
Long-term zero-tillage enhances the protection of soil carbon in tropical agriculture |
author |
Cooper, Hannah V. |
author_facet |
Cooper, Hannah V. Sjogersten, Sofie Lark, Richard M. Girkin, Nicholas T. Vane, Christopher H. Calonego, Juliano C. [UNESP] Rosolem, Ciro [UNESP] Mooney, Sacha J. |
author_role |
author |
author2 |
Sjogersten, Sofie Lark, Richard M. Girkin, Nicholas T. Vane, Christopher H. Calonego, Juliano C. [UNESP] Rosolem, Ciro [UNESP] Mooney, Sacha J. |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Univ Nottingham Cranfield Univ British Geol Survey Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Cooper, Hannah V. Sjogersten, Sofie Lark, Richard M. Girkin, Nicholas T. Vane, Christopher H. Calonego, Juliano C. [UNESP] Rosolem, Ciro [UNESP] Mooney, Sacha J. |
dc.subject.por.fl_str_mv |
no‐ till Rock‐ Eval pyrolysis soil carbon soil structure tillage X‐ ray computed tomography |
topic |
no‐ till Rock‐ Eval pyrolysis soil carbon soil structure tillage X‐ ray computed tomography |
description |
Contrasting tillage strategies not only affect the stability and formation of soil aggregates but also modify the concentration and thermostability of soil organic matter associated with soil aggregates. Understanding the thermostability and carbon retention ability of aggregates under different tillage systems is essential to ascertain potential terrestrial carbon storage. We characterized the concentration and thermostability of soil organic carbon (SOC) within various aggregate size classes under both zero and conventional tillage using novel Rock-Eval pyrolysis. The nature of the pore systems was visualized and quantified by X-ray computed tomography to link soil structure to organic carbon preservation and thermostability. Soil samples were collected from experimental fields in Botucatu, Brazil, which had been under zero-tillage for 2, 15 and 31 years, and from adjacent fields under conventional tillage. Soils under zero-tillage significantly increased pore connectivity whilst simultaneously decreasing interaggregate porosity, providing a potential physical mechanism for protection of SOC in the 0-20-cm soil layer. Changes in the soil physical characteristics associated with the adoption of zero-tillage resulted in improved aggregate formation compared to conventionally tilled soils, especially when implemented for at least 15 years. In addition, we identified a chemical change in composition of organic carbon to a more recalcitrant fraction following conversion to zero-tillage, suggesting aggregates were accumulating rather than mineralizing SOC. These data reveal profound effects of different tillage systems upon soil structural modification, with important implications for the potential of zero-tillage to increase carbon sequestration compared to conventional tillage. Highlights Different tillage systems may affect SOC thermostability and C retention potentials of soil aggregates. SOC thermostability was characterised by Rock-Eval pyrolysis and pore systems were quantified by X-ray CT within aggregate size classes. Profound effects of zero versus conventional tillage upon soil structural modification were observed Important implications for zero-tillage to increase C sequestration versus conventional tillage. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T15:04:11Z 2021-06-25T15:04:11Z 2021-05-05 |
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://dx.doi.org/10.1111/ejss.13111 European Journal Of Soil Science. Hoboken: Wiley, 16 p., 2021. 1351-0754 http://hdl.handle.net/11449/210300 10.1111/ejss.13111 WOS:000647237400001 5720775873259528 0000-0003-2001-0874 |
url |
http://dx.doi.org/10.1111/ejss.13111 http://hdl.handle.net/11449/210300 |
identifier_str_mv |
European Journal Of Soil Science. Hoboken: Wiley, 16 p., 2021. 1351-0754 10.1111/ejss.13111 WOS:000647237400001 5720775873259528 0000-0003-2001-0874 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
European Journal Of Soil Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
16 |
dc.publisher.none.fl_str_mv |
Wiley-Blackwell |
publisher.none.fl_str_mv |
Wiley-Blackwell |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803649762113617920 |