Spatial variation and controls of soil microbial necromass carbon in a tropical montane rainforest

Soil microbial necromass carbon is an important component of the soil organic carbon (SOC) pool which helps to improve soil fertility and texture. However, the spatial pattern and variation mechanisms of fungal- and bacterial-derived necromass carbon at local scales in tropical rainforests are uncer...

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Autores: Ding, Zhangqi, Mou, Zhijian|||0000-0001-7787-4812, Li, Yanpeng, Liang, Chao, Xie, Zicai, Wang, Jun, Hui, Dafeng|||0000-0002-5284-2897, Lambers, Hans|||0000-0002-4118-2272, Sardans i Galobart, Jordi|||0000-0003-2478-0219, Peñuelas, Josep|||0000-0002-7215-0150, Xu, Han|||0000-0002-1085-3344, Liu, Zhanfeng|||0000-0002-6602-6196
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:290768
Acceso en línea:https://ddd.uab.cat/record/290768
https://dx.doi.org/urn:doi:10.1016/j.scitotenv.2024.170986
Access Level:acceso abierto
Palabra clave:Microbial necromass carbon
Spatial variation
Tropical forests
Amino sugars
Soil organic carbon
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spelling Spatial variation and controls of soil microbial necromass carbon in a tropical montane rainforestDing, ZhangqiMou, Zhijian|||0000-0001-7787-4812Li, YanpengLiang, ChaoXie, ZicaiWang, JunHui, Dafeng|||0000-0002-5284-2897Lambers, Hans|||0000-0002-4118-2272Sardans i Galobart, Jordi|||0000-0003-2478-0219Peñuelas, Josep|||0000-0002-7215-0150Xu, Han|||0000-0002-1085-3344Liu, Zhanfeng|||0000-0002-6602-6196Microbial necromass carbonSpatial variationTropical forestsAmino sugarsSoil organic carbonSoil microbial necromass carbon is an important component of the soil organic carbon (SOC) pool which helps to improve soil fertility and texture. However, the spatial pattern and variation mechanisms of fungal- and bacterial-derived necromass carbon at local scales in tropical rainforests are uncertain. This study showed that microbial necromass carbon and its proportion in SOC in tropical montane rainforest exhibited large spatial variation and significant autocorrelation, with significant high-high and low-low clustering patterns. Microbial necromass carbon accounted for approximately one-third of SOC, and the fungal-derived microbial necromass carbon and its proportion in SOC were, on average, approximately five times greater than those of bacterial-derived necromass. Structural equation models indicated that soil properties (SOC, total nitrogen, total phosphorus) and topographic features (elevation, convexity, and aspect) had significant positive effects on microbial necromass carbon concentrations, but negative effects on its proportions in SOC (especially the carbon:nitrogen ratio). Plant biomass also had significant negative effects on the proportion of microbial necromass carbon in SOC, but was not correlated with its concentration. The different spatial variation mechanisms of microbial necromass carbon and their proportions in SOC are possibly related to a slower accumulation rate of microbial necromass carbon than of plant-derived organic carbon. Geographic spatial correlations can significantly improve the microbial necromass carbon model fit, and low sampling resolution may lead to large uncertainties in estimating soil carbon dynamics at specific sites. Our work will be valuable for understanding microbial necromass carbon variation in tropical forests and soil carbon prediction model construction with microbial participation. 22024-01-0120242024-01-01Articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/290768https://dx.doi.org/urn:doi:10.1016/j.scitotenv.2024.170986reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengAgencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2022-141972NA-I00Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 TED2021-132627B-I00Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2020-115770RB-IAgència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2021/SGR-1333open accesshttp://purl.org/coar/access_right/c_abf2Aquest 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/openAccessoai:ddd.uab.cat:2907682026-06-06T12:50:31Z
dc.title.none.fl_str_mv Spatial variation and controls of soil microbial necromass carbon in a tropical montane rainforest
title Spatial variation and controls of soil microbial necromass carbon in a tropical montane rainforest
spellingShingle Spatial variation and controls of soil microbial necromass carbon in a tropical montane rainforest
Ding, Zhangqi
Microbial necromass carbon
Spatial variation
Tropical forests
Amino sugars
Soil organic carbon
title_short Spatial variation and controls of soil microbial necromass carbon in a tropical montane rainforest
title_full Spatial variation and controls of soil microbial necromass carbon in a tropical montane rainforest
title_fullStr Spatial variation and controls of soil microbial necromass carbon in a tropical montane rainforest
title_full_unstemmed Spatial variation and controls of soil microbial necromass carbon in a tropical montane rainforest
title_sort Spatial variation and controls of soil microbial necromass carbon in a tropical montane rainforest
dc.creator.none.fl_str_mv Ding, Zhangqi
Mou, Zhijian|||0000-0001-7787-4812
Li, Yanpeng
Liang, Chao
Xie, Zicai
Wang, Jun
Hui, Dafeng|||0000-0002-5284-2897
Lambers, Hans|||0000-0002-4118-2272
Sardans i Galobart, Jordi|||0000-0003-2478-0219
Peñuelas, Josep|||0000-0002-7215-0150
Xu, Han|||0000-0002-1085-3344
Liu, Zhanfeng|||0000-0002-6602-6196
author Ding, Zhangqi
author_facet Ding, Zhangqi
Mou, Zhijian|||0000-0001-7787-4812
Li, Yanpeng
Liang, Chao
Xie, Zicai
Wang, Jun
Hui, Dafeng|||0000-0002-5284-2897
Lambers, Hans|||0000-0002-4118-2272
Sardans i Galobart, Jordi|||0000-0003-2478-0219
Peñuelas, Josep|||0000-0002-7215-0150
Xu, Han|||0000-0002-1085-3344
Liu, Zhanfeng|||0000-0002-6602-6196
author_role author
author2 Mou, Zhijian|||0000-0001-7787-4812
Li, Yanpeng
Liang, Chao
Xie, Zicai
Wang, Jun
Hui, Dafeng|||0000-0002-5284-2897
Lambers, Hans|||0000-0002-4118-2272
Sardans i Galobart, Jordi|||0000-0003-2478-0219
Peñuelas, Josep|||0000-0002-7215-0150
Xu, Han|||0000-0002-1085-3344
Liu, Zhanfeng|||0000-0002-6602-6196
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Microbial necromass carbon
Spatial variation
Tropical forests
Amino sugars
Soil organic carbon
topic Microbial necromass carbon
Spatial variation
Tropical forests
Amino sugars
Soil organic carbon
description Soil microbial necromass carbon is an important component of the soil organic carbon (SOC) pool which helps to improve soil fertility and texture. However, the spatial pattern and variation mechanisms of fungal- and bacterial-derived necromass carbon at local scales in tropical rainforests are uncertain. This study showed that microbial necromass carbon and its proportion in SOC in tropical montane rainforest exhibited large spatial variation and significant autocorrelation, with significant high-high and low-low clustering patterns. Microbial necromass carbon accounted for approximately one-third of SOC, and the fungal-derived microbial necromass carbon and its proportion in SOC were, on average, approximately five times greater than those of bacterial-derived necromass. Structural equation models indicated that soil properties (SOC, total nitrogen, total phosphorus) and topographic features (elevation, convexity, and aspect) had significant positive effects on microbial necromass carbon concentrations, but negative effects on its proportions in SOC (especially the carbon:nitrogen ratio). Plant biomass also had significant negative effects on the proportion of microbial necromass carbon in SOC, but was not correlated with its concentration. The different spatial variation mechanisms of microbial necromass carbon and their proportions in SOC are possibly related to a slower accumulation rate of microbial necromass carbon than of plant-derived organic carbon. Geographic spatial correlations can significantly improve the microbial necromass carbon model fit, and low sampling resolution may lead to large uncertainties in estimating soil carbon dynamics at specific sites. Our work will be valuable for understanding microbial necromass carbon variation in tropical forests and soil carbon prediction model construction with microbial participation.
publishDate 2024
dc.date.none.fl_str_mv 2
2024-01-01
2024
2024-01-01
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/290768
https://dx.doi.org/urn:doi:10.1016/j.scitotenv.2024.170986
url https://ddd.uab.cat/record/290768
https://dx.doi.org/urn:doi:10.1016/j.scitotenv.2024.170986
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 PID2022-141972NA-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
Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2021/SGR-1333
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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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