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Effects of mixing tree species and water availability on soil organic carbon stocks are depth dependent in a temperate podzol

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorFANIN, Nicolas
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierCentre d'Etude de la Forêt [Faculté de foresterie, de géographie et de géomatique]
dc.contributor.authorMAXWELL, Tania
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorALTINALMAZIS‐KONDYLIS, Andreas
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorBON, Lucie
hal.structure.identifierUnité expérimentale Forêt Pierroton [UEFP]
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorMEREDIEU, Céline
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorJACTEL, Hervé
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorBAKKER, Mark
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorAUGUSTO, Laurent
dc.date.issued2021
dc.identifier.issn1351-0754
dc.description.abstractEnMixing tree species is a forest management strategy put forward to increase and stabilize primary productivity. Yet, little is known about soil organic carbon (SOC) storage in mixed species forests, particularly under water shortage. In this study, we used a tree diversity experiment in southwestern France to assess the interactive effects of water availability (via irrigation) and mixing tree species (monocultures of pine (Pinus pinaster) and birch (Betula pendula) versus mixed plots of pine-birch and pine-birch-oak (Quercus robur)) on SOC stocks in the forest floor and across five mineral soil layers (0-5, 5-15, 15-30, 30-60 and 60-90 cm deep). We found that SOC stocks were negatively affected by irrigation in the forest floor due to an increase in decomposition rates. However, SOC stocks were positively influenced by both the mixing of tree species and irrigation in the mineral soil, particularly at the 15-30-cm soil depth. This is because root niche partitioning in mixed plots and an increase in tree biomass in irrigated plots may have resulted in greater organic matter inputs through rhizodeposition and the incorporation of microbially-derived compounds. These preliminary results indicate that SOC dynamics and its response to biotic and abiotic factors are strongly dependent on soil depth. Our data further highlight that the positive effect of mixing trees on SOC stocks was higher in irrigated plots, thereby contradicting the idea that tree mixture effects are expected to be greater when environmental conditions are harsher. We conclude that mixing tree species can increase SOC stocks in the short term in temperate forests, even if the exact mechanisms remain to be identified.
dc.description.sponsorshipDiversité et Productivité des forêTs impactées par le Changement Climatique - ANR-16-CE32-0003
dc.description.sponsorshipCARbone, Traits fonctionnels associés, et leur OptimisatioN - ANR-19-CE32-0006
dc.language.isoen
dc.publisherWiley
dc.subject.enaboveground-belowground linkages
dc.subject.endrought
dc.subject.enforest carbon sequestration
dc.subject.enplant-soil interactions
dc.subject.entree species identity
dc.title.enEffects of mixing tree species and water availability on soil organic carbon stocks are depth dependent in a temperate podzol
dc.typeArticle de revue
dc.identifier.doi10.1111/ejss.13133
dc.subject.halSciences de l'environnement
bordeaux.journalEuropean Journal of Soil Science
bordeaux.page1-9
bordeaux.peerReviewedoui
hal.identifierhal-03256070
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03256070v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=European%20Journal%20of%20Soil%20Science&rft.date=2021&rft.spage=1-9&rft.epage=1-9&rft.eissn=1351-0754&rft.issn=1351-0754&rft.au=FANIN,%20Nicolas&MAXWELL,%20Tania&ALTINALMAZIS%E2%80%90KONDYLIS,%20Andreas&BON,%20Lucie&MEREDIEU,%20C%C3%A9line&rft.genre=article


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