Cargando…

Fine-Root Turnover, Litterfall, and Soil Microbial Community of Three Mixed Coniferous–Deciduous Forests Dominated by Korean Pine (Pinus koraiensis) Along a Latitudinal Gradient

Carbon dynamics in forests and in particular in soils are of primary importance in the context of climate change. A better understanding of the drivers controlling carbon storage is needed to improve climate mitigation strategies. Carbon storage is the result of a balance between inputs and outputs....

Descripción completa

Detalles Bibliográficos
Autores principales: Liu, Lu, Yang, Fan, Wang, YuJue, Shen, Xing, Janssens, Ivan A., Guenet, Bertrand, Xiao, Chunwang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6821785/
https://www.ncbi.nlm.nih.gov/pubmed/31708942
http://dx.doi.org/10.3389/fpls.2019.01298
_version_ 1783464199972716544
author Liu, Lu
Yang, Fan
Wang, YuJue
Shen, Xing
Janssens, Ivan A.
Guenet, Bertrand
Xiao, Chunwang
author_facet Liu, Lu
Yang, Fan
Wang, YuJue
Shen, Xing
Janssens, Ivan A.
Guenet, Bertrand
Xiao, Chunwang
author_sort Liu, Lu
collection PubMed
description Carbon dynamics in forests and in particular in soils are of primary importance in the context of climate change. A better understanding of the drivers controlling carbon storage is needed to improve climate mitigation strategies. Carbon storage is the result of a balance between inputs and outputs. Carbon inputs in the soil come from plant residues and root exudates, which are further transformed by microorganisms and stored in the long term. Here, we measured litter and fine-root production in three mixed forests dominated by Pinus koraiensis along a latitudinal gradient and performed a litterbag experiment to better understand the driving factors of decomposition. We found that over the three sites litter production was controlled by climatic factors, soil properties, and forest stand characteristics, whereas decay rates were mainly controlled by microbial community structure and soil stoichiometry. For fine roots, production differed among sites, and higher production was consistently observed in the top soil layers compared to deep soil, although the root distribution along the soil profile differed among sites. Fine-root decay rates were mainly controlled by fine-root stoichiometric characteristics. This article emphasizes the complexity of fine-root dynamics even for a single species. Environmental drivers impact on both production and decay, and we suggest performing manipulative field experiments to better identify the mechanisms involved in soil carbon cycling.
format Online
Article
Text
id pubmed-6821785
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-68217852019-11-08 Fine-Root Turnover, Litterfall, and Soil Microbial Community of Three Mixed Coniferous–Deciduous Forests Dominated by Korean Pine (Pinus koraiensis) Along a Latitudinal Gradient Liu, Lu Yang, Fan Wang, YuJue Shen, Xing Janssens, Ivan A. Guenet, Bertrand Xiao, Chunwang Front Plant Sci Plant Science Carbon dynamics in forests and in particular in soils are of primary importance in the context of climate change. A better understanding of the drivers controlling carbon storage is needed to improve climate mitigation strategies. Carbon storage is the result of a balance between inputs and outputs. Carbon inputs in the soil come from plant residues and root exudates, which are further transformed by microorganisms and stored in the long term. Here, we measured litter and fine-root production in three mixed forests dominated by Pinus koraiensis along a latitudinal gradient and performed a litterbag experiment to better understand the driving factors of decomposition. We found that over the three sites litter production was controlled by climatic factors, soil properties, and forest stand characteristics, whereas decay rates were mainly controlled by microbial community structure and soil stoichiometry. For fine roots, production differed among sites, and higher production was consistently observed in the top soil layers compared to deep soil, although the root distribution along the soil profile differed among sites. Fine-root decay rates were mainly controlled by fine-root stoichiometric characteristics. This article emphasizes the complexity of fine-root dynamics even for a single species. Environmental drivers impact on both production and decay, and we suggest performing manipulative field experiments to better identify the mechanisms involved in soil carbon cycling. Frontiers Media S.A. 2019-10-24 /pmc/articles/PMC6821785/ /pubmed/31708942 http://dx.doi.org/10.3389/fpls.2019.01298 Text en Copyright © 2019 Liu, Yang, Wang, Shen, Janssens, Guenet and Xiao http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Liu, Lu
Yang, Fan
Wang, YuJue
Shen, Xing
Janssens, Ivan A.
Guenet, Bertrand
Xiao, Chunwang
Fine-Root Turnover, Litterfall, and Soil Microbial Community of Three Mixed Coniferous–Deciduous Forests Dominated by Korean Pine (Pinus koraiensis) Along a Latitudinal Gradient
title Fine-Root Turnover, Litterfall, and Soil Microbial Community of Three Mixed Coniferous–Deciduous Forests Dominated by Korean Pine (Pinus koraiensis) Along a Latitudinal Gradient
title_full Fine-Root Turnover, Litterfall, and Soil Microbial Community of Three Mixed Coniferous–Deciduous Forests Dominated by Korean Pine (Pinus koraiensis) Along a Latitudinal Gradient
title_fullStr Fine-Root Turnover, Litterfall, and Soil Microbial Community of Three Mixed Coniferous–Deciduous Forests Dominated by Korean Pine (Pinus koraiensis) Along a Latitudinal Gradient
title_full_unstemmed Fine-Root Turnover, Litterfall, and Soil Microbial Community of Three Mixed Coniferous–Deciduous Forests Dominated by Korean Pine (Pinus koraiensis) Along a Latitudinal Gradient
title_short Fine-Root Turnover, Litterfall, and Soil Microbial Community of Three Mixed Coniferous–Deciduous Forests Dominated by Korean Pine (Pinus koraiensis) Along a Latitudinal Gradient
title_sort fine-root turnover, litterfall, and soil microbial community of three mixed coniferous–deciduous forests dominated by korean pine (pinus koraiensis) along a latitudinal gradient
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6821785/
https://www.ncbi.nlm.nih.gov/pubmed/31708942
http://dx.doi.org/10.3389/fpls.2019.01298
work_keys_str_mv AT liulu finerootturnoverlitterfallandsoilmicrobialcommunityofthreemixedconiferousdeciduousforestsdominatedbykoreanpinepinuskoraiensisalongalatitudinalgradient
AT yangfan finerootturnoverlitterfallandsoilmicrobialcommunityofthreemixedconiferousdeciduousforestsdominatedbykoreanpinepinuskoraiensisalongalatitudinalgradient
AT wangyujue finerootturnoverlitterfallandsoilmicrobialcommunityofthreemixedconiferousdeciduousforestsdominatedbykoreanpinepinuskoraiensisalongalatitudinalgradient
AT shenxing finerootturnoverlitterfallandsoilmicrobialcommunityofthreemixedconiferousdeciduousforestsdominatedbykoreanpinepinuskoraiensisalongalatitudinalgradient
AT janssensivana finerootturnoverlitterfallandsoilmicrobialcommunityofthreemixedconiferousdeciduousforestsdominatedbykoreanpinepinuskoraiensisalongalatitudinalgradient
AT guenetbertrand finerootturnoverlitterfallandsoilmicrobialcommunityofthreemixedconiferousdeciduousforestsdominatedbykoreanpinepinuskoraiensisalongalatitudinalgradient
AT xiaochunwang finerootturnoverlitterfallandsoilmicrobialcommunityofthreemixedconiferousdeciduousforestsdominatedbykoreanpinepinuskoraiensisalongalatitudinalgradient