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The fate of leaf-litter N under contrasting pedo-climatic conditions in south-western Siberia

hal.structure.identifierUnité de recherche Biogéochimie des Ecosystèmes Forestiers [BEF]
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorBRÉDOIRE, Félix
hal.structure.identifierUnité de recherche Biogéochimie des Ecosystèmes Forestiers [BEF]
dc.contributor.authorZELLER, Bernhard
hal.structure.identifierUniversity of Idaho [Moscow, USA]
dc.contributor.authorKAYLER, Zachary E.
hal.structure.identifierInstitute of Soil Science and Agrochemistry [RISSAC]
dc.contributor.authorBARSUKOV, Pavel A.
hal.structure.identifierUnité de recherche Biogéochimie des Ecosystèmes Forestiers [BEF]
hal.structure.identifierInstitute of Soil Science and Agrochemistry [RISSAC]
hal.structure.identifierTomsk State University [TSU]
dc.contributor.authorNIKITICH, Polina
hal.structure.identifierInstitute of Soil Science and Agrochemistry [RISSAC]
dc.contributor.authorRUSALIMOVA, Olga
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorBAKKER, Mark R.
hal.structure.identifierInstitute of Soil Science and Agrochemistry [RISSAC]
dc.contributor.authorBASHUK, Alexander
hal.structure.identifierUnité de recherche Biogéochimie des Ecosystèmes Forestiers [BEF]
dc.contributor.authorSAINTE-MARIE, Julien
hal.structure.identifierUnité de recherche Biogéochimie des Ecosystèmes Forestiers [BEF]
dc.contributor.authorDIDIER, Serge
hal.structure.identifierUnité de recherche Biogéochimie des Ecosystèmes Forestiers [BEF]
dc.contributor.authorLEGOUT, Arnaud
hal.structure.identifierUnité de recherche Biogéochimie des Ecosystèmes Forestiers [BEF]
dc.contributor.authorDERRIEN, Delphine
dc.date.accessioned2024-04-08T11:50:01Z
dc.date.available2024-04-08T11:50:01Z
dc.date.issued2019
dc.identifier.issn0038-0717
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195366
dc.description.abstractEnNitrogen (N) made available through the decomposition of organic matter is a major source for plants in terrestrial ecosystems. N cycling in Siberia is however poorly documented despite the region representing a substantial surface area of the globe.We studied the influence of pedo-climate (using two forest-steppe and two southern taiga sites) and vegetation type (aspen forest and grassland) on the redistribution of N released from decomposing N-15-labelled leaf-litter in south-western (SW) Siberia. A model of N dynamics was fit to field measurements that yielded estimates of N mean residence time (MRT) within litter and soil layers, as well as the proportion of N transferred from one layer to another.The release of N from the aspen litter was slower in the forest-steppe (MRT in litter: 2.9-4.6 years) than in the southern taiga (0.9-1.5 years), likely because winter soil freezing and summer drought slowed decomposition in the forest-steppe. In contrast, no difference between the bioclimatic zones was observed for the grass litter (MRT 1.2-1.6 years), suggesting litter chemistry outweighs pedo-climate in these zones. While most of the vertical transfer of N down the soil profile occurred during the vegetative season, important losses were observed after snow-melt. Over three years, the transfer of N within the soil profile was deeper in the southern taiga sites than in the forest-steppe, and in forest than in grassland. In the topsoil, the MRT of N was longer in grassland (4.9-9.4 years) than in forest (1.5-2.1 years) but there were no pronounced differences between bioclimatic zones.The detailed and quantitative view of current N cycling in SW Siberia provided in this study may serve as the basis for informing ecosystem models that anticipate future climate and land-use changes.
dc.description.sponsorshipRecherches Avancées sur l'Arbre et les Ecosytèmes Forestiers
dc.language.isoen
dc.publisherElsevier
dc.rights.urihttp://creativecommons.org/licenses/by-nc/
dc.subjectfacteur pédoclimatique
dc.subjectsteppe
dc.subjectforêt
dc.subjectcycle biogéochimique
dc.subjectsibérie
dc.subjectazote
dc.subjectlitière forestière
dc.subject.ensiberia
dc.subject.enSouth-western Siberia
dc.subject.enPedo-climate
dc.subject.enLeaf-litter decomposition
dc.subject.enNitrogen flow model
dc.subject.enNitrogen cycling
dc.subject.enforest litter
dc.subject.ennitrogen
dc.subject.enN-15-Labelled litter
dc.subject.enbiogeochemical cycle
dc.subject.enforest
dc.title.enThe fate of leaf-litter N under contrasting pedo-climatic conditions in south-western Siberia
dc.typeArticle de revue
dc.identifier.doi10.1016/j.soilbio.2019.05.022
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre
bordeaux.journalSoil Biology and Biochemistry
bordeaux.page331-342
bordeaux.volume135
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02265508
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02265508v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Soil%20Biology%20and%20Biochemistry&rft.date=2019&rft.volume=135&rft.spage=331-342&rft.epage=331-342&rft.eissn=0038-0717&rft.issn=0038-0717&rft.au=BR%C3%89DOIRE,%20F%C3%A9lix&ZELLER,%20Bernhard&KAYLER,%20Zachary%20E.&BARSUKOV,%20Pavel%20A.&NIKITICH,%20Polina&rft.genre=article


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