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Simulating the effects of different potassium and water supply regimes on soil water content and water table depth over a rotation of a tropical Eucalyptus grandis plantation

hal.structure.identifierEcologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
dc.contributor.authorCHRISTINA, Mathias
hal.structure.identifierEcologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
dc.contributor.authorLE MAIRE, Guerric
hal.structure.identifierEcologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
dc.contributor.authorNOUVELLON, Yann
hal.structure.identifierFonctionnement et conduite des systèmes de culture tropicaux et méditerranéens [UMR SYSTEM]
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorVEZY, Rémi
hal.structure.identifierUniversidade Federal de São Paulo
dc.contributor.authorBORDON, B.
hal.structure.identifierEcologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
hal.structure.identifierCentro de Energia Nuclear na Agricultura [CENA]
dc.contributor.authorBATTIE-LACLAU, Patricia
hal.structure.identifierUniversidade Federal de São Paulo
dc.contributor.authorGONÇALVES, J.L.M.
hal.structure.identifierUniversidade Federal de São Paulo
dc.contributor.authorDELGADO-ROJAS, J.S.
hal.structure.identifierEcologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
hal.structure.identifierUniversidade Federal de São Paulo
dc.contributor.authorBOUILLET, Jean-Pierre
hal.structure.identifierEcologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
hal.structure.identifierUniversidade Federal de São Paulo
hal.structure.identifierUniversidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University [UNESP]
dc.contributor.authorLACLAU, Jean-Paul
dc.date.accessioned2024-04-08T12:03:46Z
dc.date.available2024-04-08T12:03:46Z
dc.date.issued2018
dc.identifier.issn0378-1127
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196283
dc.description.abstractEnAlthough large amounts of potassium (K) are applied in tropical crops and planted forests, little is known about the interaction between K nutrition and water supply regimes on water resources in tropical regions. This interaction is a major issue because climate change is expected to increase the length of drought periods in many tropical regions and soil water availability in deep soil layers is likely to have a major influence on tree growth during dry periods in tropical planted forests. A process-based model (MAESPA) was parameterized in a throughfall exclusion experiment in Brazil to gain insight into the combined effects of K deficiency and rainfall reduction (37% throughfall exclusion) on the water used by the trees, soil water storage and water table fluctuations over the first 4.5 years after planting Eucalyptus grandis trees. A comparison of canopy transpiration in each plot with the values predicted for the same soil with the water content maintained at field capacity, made it possible to calculate a soil-driven tree water stress index for each treatment. Compared to K-fertilized trees with undisturbed rainfall (+K+W), canopy transpiration was 40% lower for K deficiency (-K+W), 20% lower for W deficit (+K - W) and 36% lower for combined K deficiency and W deficit (- K - W) on average. Water was withdrawn in deeper soil layers for -W than for + W, particularly over dry seasons. Under contrasted K availability, water withdrawal was more superficial for -K than for +K. Mean soil water content down to 18 m below surface (mbs) was 24% higher for - K+ W than for +K+W from 2 years after planting (after canopy closure), while it was 24% lower for +K-W and 12% lower for -K W than for +K+W. The soil-driven tree water stress index was 166% higher over the first 4.5 years after planting for - W than for +W, 76% lower for -K than for +K, and 14% lower for -K -W than for +K+W. Over the study period, deep seepage was higher by 371 mm yr(-1) (+122%) for -K than for +K and lower by 200 mm yr(-1) (- 66%) for -W than for +W. Deep seepage was lower by 44% for -K- W than for +K+ W. At the end of the study period, the model predicted a higher water table for -K (10 mbs for -K+W and 16 mbs for -K-W) than for +K (16 mbs for +K+W and 18 mbs for +K-W). Our study suggests that flexible fertilization regimes could contribute to adjusting the local trade-off between wood production and demand for soil water resources in planted forests.
dc.description.sponsorshipModélisation pour l'accompagnement des ACteurs, vers l'Adaptation des Couverts pérennes ou agroforestiers aux Changements globaux - ANR-13-AGRO-0005
dc.description.sponsorshipAgricultural Sciences for sustainable Development - ANR-10-LABX-0001
dc.language.isoen
dc.publisherElsevier
dc.subjectnutrients
dc.subject.enwater resources
dc.subject.engroundwater
dc.subject.enBrazil
dc.subject.eneucalyptus
dc.subject.endeep roots
dc.title.enSimulating the effects of different potassium and water supply regimes on soil water content and water table depth over a rotation of a tropical Eucalyptus grandis plantation
dc.typeArticle de revue
dc.identifier.doi10.1016/j.foreco.2017.12.048
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences de l'environnement
bordeaux.journalForest Ecology and Management
bordeaux.page4-14
bordeaux.volume418
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02628550
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02628550v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Forest%20Ecology%20and%20Management&rft.date=2018&rft.volume=418&rft.spage=4-14&rft.epage=4-14&rft.eissn=0378-1127&rft.issn=0378-1127&rft.au=CHRISTINA,%20Mathias&LE%20MAIRE,%20Guerric&NOUVELLON,%20Yann&VEZY,%20R%C3%A9mi&BORDON,%20B.&rft.genre=article


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