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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
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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