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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.identifier | Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols] | |
dc.contributor.author | CHRISTINA, Mathias | |
hal.structure.identifier | Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols] | |
dc.contributor.author | LE MAIRE, Guerric | |
hal.structure.identifier | Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols] | |
dc.contributor.author | NOUVELLON, Yann | |
hal.structure.identifier | Fonctionnement et conduite des systèmes de culture tropicaux et méditerranéens [UMR SYSTEM] | |
hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
dc.contributor.author | VEZY, Rémi | |
hal.structure.identifier | Universidade Federal de São Paulo | |
dc.contributor.author | BORDON, B. | |
hal.structure.identifier | Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols] | |
hal.structure.identifier | Centro de Energia Nuclear na Agricultura [CENA ] | |
dc.contributor.author | BATTIE-LACLAU, Patricia | |
hal.structure.identifier | Universidade Federal de São Paulo | |
dc.contributor.author | GONÇALVES, J.L.M. | |
hal.structure.identifier | Universidade Federal de São Paulo | |
dc.contributor.author | DELGADO-ROJAS, J.S. | |
hal.structure.identifier | Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols] | |
hal.structure.identifier | Universidade Federal de São Paulo | |
dc.contributor.author | BOUILLET, Jean-Pierre | |
hal.structure.identifier | Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols] | |
hal.structure.identifier | Universidade Federal de São Paulo | |
hal.structure.identifier | Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University [UNESP] | |
dc.contributor.author | LACLAU, Jean-Paul | |
dc.date.accessioned | 2024-04-08T12:03:46Z | |
dc.date.available | 2024-04-08T12:03:46Z | |
dc.date.issued | 2018 | |
dc.identifier.issn | 0378-1127 | |
dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/196283 | |
dc.description.abstractEn | Although 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.sponsorship | Modélisation pour l'accompagnement des ACteurs, vers l'Adaptation des Couverts pérennes ou agroforestiers aux Changements globaux | |
dc.description.sponsorship | Agricultural Sciences for sustainable Development - ANR-10-LABX-0001 | |
dc.language.iso | en | |
dc.publisher | Elsevier | |
dc.subject | nutrients | |
dc.subject.en | water resources | |
dc.subject.en | groundwater | |
dc.subject.en | Brazil | |
dc.subject.en | eucalyptus | |
dc.subject.en | deep roots | |
dc.title.en | 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 | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1016/j.foreco.2017.12.048 | |
dc.subject.hal | Sciences du Vivant [q-bio] | |
dc.subject.hal | Sciences de l'environnement | |
bordeaux.journal | Forest Ecology and Management | |
bordeaux.page | 4-14 | |
bordeaux.volume | 418 | |
bordeaux.hal.laboratories | Interactions Soil Plant Atmosphere (ISPA) - UMR 1391 | * |
bordeaux.institution | Bordeaux Sciences Agro | |
bordeaux.institution | INRAE | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-02628550 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-02628550v1 | |
bordeaux.COinS | ctx_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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