Gradual and abrupt increase in atmospheric CO2 concentrations trigger divergent responses of microbial necromass accumulation in paddy soils

Microbial necromass C (MNC) plays a critical role in promoting soil organic C (SOC) formation and stabilization, particularly in the context of climate change. Most investigations on the impact of elevated CO2 concentrations (eCO2) on MNC have been performed by exposing ecosystems to an abrupt incre...

Full description

Bibliographic Details
Authors: Ding, Xueli, Yang, Dongqiao, Hu, Zhenghua, Shen, Lidong, Zhang, W., Zhu, Xuefeng, Peñuelas, Josep, Wu, Zhurong, He, Hao, He, Hongbo, Liang, Chao
Format: article
Status:Versión aceptada para publicación
Publication Date:2024
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/386992
Online Access:http://hdl.handle.net/10261/386992
https://api.elsevier.com/content/abstract/scopus_id/85201221669
Access Level:Embargoed access
Keyword:Abrupt CO2 increase
Gradual CO2 increase
Microbial necromass
Paddy fields
Soil carbon sequestration
Soil depth
id ES_4e0729e2c79604f25bc8eedc2e2df586
oai_identifier_str oai:digital.csic.es:10261/386992
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Gradual and abrupt increase in atmospheric CO2 concentrations trigger divergent responses of microbial necromass accumulation in paddy soils
title Gradual and abrupt increase in atmospheric CO2 concentrations trigger divergent responses of microbial necromass accumulation in paddy soils
spellingShingle Gradual and abrupt increase in atmospheric CO2 concentrations trigger divergent responses of microbial necromass accumulation in paddy soils
Ding, Xueli
Abrupt CO2 increase
Gradual CO2 increase
Microbial necromass
Paddy fields
Soil carbon sequestration
Soil depth
title_short Gradual and abrupt increase in atmospheric CO2 concentrations trigger divergent responses of microbial necromass accumulation in paddy soils
title_full Gradual and abrupt increase in atmospheric CO2 concentrations trigger divergent responses of microbial necromass accumulation in paddy soils
title_fullStr Gradual and abrupt increase in atmospheric CO2 concentrations trigger divergent responses of microbial necromass accumulation in paddy soils
title_full_unstemmed Gradual and abrupt increase in atmospheric CO2 concentrations trigger divergent responses of microbial necromass accumulation in paddy soils
title_sort Gradual and abrupt increase in atmospheric CO2 concentrations trigger divergent responses of microbial necromass accumulation in paddy soils
dc.creator.none.fl_str_mv Ding, Xueli
Yang, Dongqiao
Hu, Zhenghua
Shen, Lidong
Zhang, W.
Zhu, Xuefeng
Peñuelas, Josep
Wu, Zhurong
He, Hao
He, Hongbo
Liang, Chao
author Ding, Xueli
author_facet Ding, Xueli
Yang, Dongqiao
Hu, Zhenghua
Shen, Lidong
Zhang, W.
Zhu, Xuefeng
Peñuelas, Josep
Wu, Zhurong
He, Hao
He, Hongbo
Liang, Chao
author_role author
author2 Yang, Dongqiao
Hu, Zhenghua
Shen, Lidong
Zhang, W.
Zhu, Xuefeng
Peñuelas, Josep
Wu, Zhurong
He, Hao
He, Hongbo
Liang, Chao
author2_role author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv National Natural Science Foundation of China
Foundation for Introducing Talent of Nanjing University of Information Science and Technology
Jiangsu Province
Ministerio de Ciencia e Innovación (España)
Agencia Estatal de Investigación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Abrupt CO2 increase
Gradual CO2 increase
Microbial necromass
Paddy fields
Soil carbon sequestration
Soil depth
topic Abrupt CO2 increase
Gradual CO2 increase
Microbial necromass
Paddy fields
Soil carbon sequestration
Soil depth
description Microbial necromass C (MNC) plays a critical role in promoting soil organic C (SOC) formation and stabilization, particularly in the context of climate change. Most investigations on the impact of elevated CO2 concentrations (eCO2) on MNC have been performed by exposing ecosystems to an abrupt increase in CO2. However, the atmospheric CO2 increase is a gradual process, and knowledge about the response of necromass to gradual increase in CO2 is lacking. We tested the hypothesis that microbial necromass would show different responses to abrupt and gradual CO2 increases. Furthermore, it is still unknown whether eCO2 will trigger similar responses between surface and subsurface soil layers. Here, we determined the MNC concentrations and their proportions in SOC in surface and subsurface soil layers via open-top chambers. CO2 treatments included ambient control, abrupt CO2 increase by 200 ppm above control, and gradual CO2 increase by 40 ppm each year until reaching 200 ppm over five years. Overall, compared with the ambient control, abrupt eCO2 induced a significantly stronger decrease in necromass (20.3 %) when averaged across three soil layers, while gradual eCO2 led to insignificant variations in necromass (6.7 %). The necromass proportion in SOC decreased with depth under both eCO2 treatments with a significant decline occurring in abrupt eCO2 treatment. The observed greater magnitude of eCO2 effects on fungal necromass relative to bacterial necromass in subsurface layers illustrates a distinct microbial community response to climate change. Taken together, abrupt and gradual eCO2 approaches differed in their impact on MNC, and its response to eCO2 may be somewhat overestimated by abrupt eCO2 approach. Furthermore, MNC in subsurface soil witnessed a more sensitivity or vulnerability to eCO2 than that of topsoil. We suggest vigilant attention will need to be paid to the feedback of necromass C in deep soil poised by future climate change.
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/386992
https://api.elsevier.com/content/abstract/scopus_id/85201221669
url http://hdl.handle.net/10261/386992
https://api.elsevier.com/content/abstract/scopus_id/85201221669
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-140808NB-I00
info:eu-repo/grantAgreement/AEI//TED2021-132627B-I00
The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI 10.1016/j.apsoil.2024.105587
https://doi.org/10.1016/j.apsoil.2024.105587
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/embargoedAccess
eu_rights_str_mv embargoedAccess
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:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869407730069929984
spelling Gradual and abrupt increase in atmospheric CO2 concentrations trigger divergent responses of microbial necromass accumulation in paddy soilsDing, XueliYang, DongqiaoHu, ZhenghuaShen, LidongZhang, W.Zhu, XuefengPeñuelas, JosepWu, ZhurongHe, HaoHe, HongboLiang, ChaoAbrupt CO2 increaseGradual CO2 increaseMicrobial necromassPaddy fieldsSoil carbon sequestrationSoil depthMicrobial necromass C (MNC) plays a critical role in promoting soil organic C (SOC) formation and stabilization, particularly in the context of climate change. Most investigations on the impact of elevated CO2 concentrations (eCO2) on MNC have been performed by exposing ecosystems to an abrupt increase in CO2. However, the atmospheric CO2 increase is a gradual process, and knowledge about the response of necromass to gradual increase in CO2 is lacking. We tested the hypothesis that microbial necromass would show different responses to abrupt and gradual CO2 increases. Furthermore, it is still unknown whether eCO2 will trigger similar responses between surface and subsurface soil layers. Here, we determined the MNC concentrations and their proportions in SOC in surface and subsurface soil layers via open-top chambers. CO2 treatments included ambient control, abrupt CO2 increase by 200 ppm above control, and gradual CO2 increase by 40 ppm each year until reaching 200 ppm over five years. Overall, compared with the ambient control, abrupt eCO2 induced a significantly stronger decrease in necromass (20.3 %) when averaged across three soil layers, while gradual eCO2 led to insignificant variations in necromass (6.7 %). The necromass proportion in SOC decreased with depth under both eCO2 treatments with a significant decline occurring in abrupt eCO2 treatment. The observed greater magnitude of eCO2 effects on fungal necromass relative to bacterial necromass in subsurface layers illustrates a distinct microbial community response to climate change. Taken together, abrupt and gradual eCO2 approaches differed in their impact on MNC, and its response to eCO2 may be somewhat overestimated by abrupt eCO2 approach. Furthermore, MNC in subsurface soil witnessed a more sensitivity or vulnerability to eCO2 than that of topsoil. We suggest vigilant attention will need to be paid to the feedback of necromass C in deep soil poised by future climate change.The authors are grateful to Msc. Jianan Zhang from the Institute of Applied Ecology, Chinese Academy of Science who helped us with soil amino sugar analysis, and to editor and reviewers for their helpful comments on the improvement of the manuscript. This work was financially supported by the National Natural Science Foundation of China (42077085; 42071023; 32101382), the Startup Foundation for Introducing Talent of NUIST (2018r100), the Special Technology Innovation Fund of Carbon Peak and Carbon Neutrality in Jiangsu Province (BK20231515), the grants PID2022-140808NB-I00, and TED2021-132627B-I00 funded by the Spanish MCIN.Peer reviewedElsevierNational Natural Science Foundation of ChinaFoundation for Introducing Talent of Nanjing University of Information Science and TechnologyJiangsu ProvinceMinisterio de Ciencia e Innovación (España)Agencia Estatal de Investigación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10261/386992https://api.elsevier.com/content/abstract/scopus_id/85201221669reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-140808NB-I00info:eu-repo/grantAgreement/AEI//TED2021-132627B-I00The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI 10.1016/j.apsoil.2024.105587https://doi.org/10.1016/j.apsoil.2024.105587Síinfo:eu-repo/semantics/embargoedAccessoai:digital.csic.es:10261/3869922026-05-22T06:33:51Z
score 15,81155

Similar Items