Responses of tropical forest soil organic matter pools to shifts in precipitation patterns

Subsoils contain more than half of global soil organic matter (SOM) stocks. Given that sequestration and turnover processes of SOM are slower in the subsoil than in the topsoil, subsoil carbon (C) stocks are likely to be vulnerable to shifts in precipitation patterns. Therefore, we investigated the...

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Autores: Sun, Feng|||0000-0003-0752-3966, Fan, Linan, Deng, Guangyan, Kuzyakov, Yakov|||0000-0002-9863-8461, Zhang, Yue|||0000-0001-7106-363X, Wang, Jinchuang, Li, Yingwen, Wang, Faming, Li, Zhian, Tariq, Akash|||0000-0002-5382-9336, Sardans i Galobart, Jordi|||0000-0003-2478-0219, Peñuelas, Josep|||0000-0002-7215-0150, Wang, Mei, Peng, Changlian
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:299869
Acceso en línea:https://ddd.uab.cat/record/299869
https://dx.doi.org/urn:doi:10.1016/j.soilbio.2024.109530
Access Level:acceso embargado
Palabra clave:Tropical forest
Rainfall changes
Soil carbon fractions
Microbial necromass
Lignin phenols
Mineral bound carbon
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spelling Responses of tropical forest soil organic matter pools to shifts in precipitation patternsSun, Feng|||0000-0003-0752-3966Fan, LinanDeng, GuangyanKuzyakov, Yakov|||0000-0002-9863-8461Zhang, Yue|||0000-0001-7106-363XWang, JinchuangLi, YingwenWang, FamingLi, ZhianTariq, Akash|||0000-0002-5382-9336Sardans i Galobart, Jordi|||0000-0003-2478-0219Peñuelas, Josep|||0000-0002-7215-0150Wang, MeiPeng, ChanglianTropical forestRainfall changesSoil carbon fractionsMicrobial necromassLignin phenolsMineral bound carbonSubsoils contain more than half of global soil organic matter (SOM) stocks. Given that sequestration and turnover processes of SOM are slower in the subsoil than in the topsoil, subsoil carbon (C) stocks are likely to be vulnerable to shifts in precipitation patterns. Therefore, we investigated the responses of different sources of tropical forest soil organic C (SOC) pools to a delayed onset and increased intensity of seasonal precipitation in a 10-year rainfall manipulation experiment. While total SOC varied with soil depth, regardless of shifts in rainfall pattern, we observed that changes in precipitation patterns affected the composition of SOC pools. A delayed wet season increased both the content and proportion of the light fraction C in the SOC at the 0-10 cm depth, potentially due to a decrease in the light fraction decomposition. The delayed wet season also led to a higher content of iron (Fe)-bound organic C, due to impacts on free iron (Fe3+) and aluminum oxides. In addition, wetter wet season led to a higher content of lignin phenols in the top- and subsoil (0-70 cm), due to anoxic conditions preventing lignin decomposition. However, this precipitation shift decreased both the content and proportion of fungal necromass in the SOC in the subsoil (50-70 cm), this was attributed to fungal necromass decomposition by microorganisms facilitated by increased N-acquisition enzyme activity. Overall, greater precipitation intensity increased the vulnerability of subsoil C to losses, primarily due to greater microbial decomposition under increased N limitation. Our study demonstrates the subsoil C-cycling processes in shaping SOM stocks to global changes in precipitation patterns. 220242024-01-0120262026-10-30Articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articlehttps://ddd.uab.cat/record/299869https://dx.doi.org/urn:doi:10.1016/j.soilbio.2024.109530reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengAgencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2022-140808NB-I00Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 TED2021-132627B-I00Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2020-115770RB-Iembargoed accesshttp://purl.org/coar/access_right/c_f1cfAquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/embargoedAccessoai:ddd.uab.cat:2998692026-06-06T12:50:31Z
dc.title.none.fl_str_mv Responses of tropical forest soil organic matter pools to shifts in precipitation patterns
title Responses of tropical forest soil organic matter pools to shifts in precipitation patterns
spellingShingle Responses of tropical forest soil organic matter pools to shifts in precipitation patterns
Sun, Feng|||0000-0003-0752-3966
Tropical forest
Rainfall changes
Soil carbon fractions
Microbial necromass
Lignin phenols
Mineral bound carbon
title_short Responses of tropical forest soil organic matter pools to shifts in precipitation patterns
title_full Responses of tropical forest soil organic matter pools to shifts in precipitation patterns
title_fullStr Responses of tropical forest soil organic matter pools to shifts in precipitation patterns
title_full_unstemmed Responses of tropical forest soil organic matter pools to shifts in precipitation patterns
title_sort Responses of tropical forest soil organic matter pools to shifts in precipitation patterns
dc.creator.none.fl_str_mv Sun, Feng|||0000-0003-0752-3966
Fan, Linan
Deng, Guangyan
Kuzyakov, Yakov|||0000-0002-9863-8461
Zhang, Yue|||0000-0001-7106-363X
Wang, Jinchuang
Li, Yingwen
Wang, Faming
Li, Zhian
Tariq, Akash|||0000-0002-5382-9336
Sardans i Galobart, Jordi|||0000-0003-2478-0219
Peñuelas, Josep|||0000-0002-7215-0150
Wang, Mei
Peng, Changlian
author Sun, Feng|||0000-0003-0752-3966
author_facet Sun, Feng|||0000-0003-0752-3966
Fan, Linan
Deng, Guangyan
Kuzyakov, Yakov|||0000-0002-9863-8461
Zhang, Yue|||0000-0001-7106-363X
Wang, Jinchuang
Li, Yingwen
Wang, Faming
Li, Zhian
Tariq, Akash|||0000-0002-5382-9336
Sardans i Galobart, Jordi|||0000-0003-2478-0219
Peñuelas, Josep|||0000-0002-7215-0150
Wang, Mei
Peng, Changlian
author_role author
author2 Fan, Linan
Deng, Guangyan
Kuzyakov, Yakov|||0000-0002-9863-8461
Zhang, Yue|||0000-0001-7106-363X
Wang, Jinchuang
Li, Yingwen
Wang, Faming
Li, Zhian
Tariq, Akash|||0000-0002-5382-9336
Sardans i Galobart, Jordi|||0000-0003-2478-0219
Peñuelas, Josep|||0000-0002-7215-0150
Wang, Mei
Peng, Changlian
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Tropical forest
Rainfall changes
Soil carbon fractions
Microbial necromass
Lignin phenols
Mineral bound carbon
topic Tropical forest
Rainfall changes
Soil carbon fractions
Microbial necromass
Lignin phenols
Mineral bound carbon
description Subsoils contain more than half of global soil organic matter (SOM) stocks. Given that sequestration and turnover processes of SOM are slower in the subsoil than in the topsoil, subsoil carbon (C) stocks are likely to be vulnerable to shifts in precipitation patterns. Therefore, we investigated the responses of different sources of tropical forest soil organic C (SOC) pools to a delayed onset and increased intensity of seasonal precipitation in a 10-year rainfall manipulation experiment. While total SOC varied with soil depth, regardless of shifts in rainfall pattern, we observed that changes in precipitation patterns affected the composition of SOC pools. A delayed wet season increased both the content and proportion of the light fraction C in the SOC at the 0-10 cm depth, potentially due to a decrease in the light fraction decomposition. The delayed wet season also led to a higher content of iron (Fe)-bound organic C, due to impacts on free iron (Fe3+) and aluminum oxides. In addition, wetter wet season led to a higher content of lignin phenols in the top- and subsoil (0-70 cm), due to anoxic conditions preventing lignin decomposition. However, this precipitation shift decreased both the content and proportion of fungal necromass in the SOC in the subsoil (50-70 cm), this was attributed to fungal necromass decomposition by microorganisms facilitated by increased N-acquisition enzyme activity. Overall, greater precipitation intensity increased the vulnerability of subsoil C to losses, primarily due to greater microbial decomposition under increased N limitation. Our study demonstrates the subsoil C-cycling processes in shaping SOM stocks to global changes in precipitation patterns.
publishDate 2024
dc.date.none.fl_str_mv
2
2024
2024-01-01
2026
2026-10-30
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/299869
https://dx.doi.org/urn:doi:10.1016/j.soilbio.2024.109530
url https://ddd.uab.cat/record/299869
https://dx.doi.org/urn:doi:10.1016/j.soilbio.2024.109530
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2022-140808NB-I00
Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 TED2021-132627B-I00
Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2020-115770RB-I
dc.rights.none.fl_str_mv embargoed access
http://purl.org/coar/access_right/c_f1cf
https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/embargoedAccess
rights_invalid_str_mv embargoed access
http://purl.org/coar/access_right/c_f1cf
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv embargoedAccess
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
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repository.mail.fl_str_mv
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