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000018204 0247_ $$2DOI$$a10.1007/s11104-010-0639-0
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000018204 084__ $$2WoS$$aAgronomy
000018204 084__ $$2WoS$$aPlant Sciences
000018204 084__ $$2WoS$$aSoil Science
000018204 1001_ $$0P:(DE-HGF)0$$aJanott, M.$$b0
000018204 245__ $$aA one-dimensional model of water flow in soil-plant systems based on plant architecture
000018204 260__ $$aDordrecht [u.a.]$$bSpringer Science + Business Media B.V$$c2011
000018204 300__ $$a233 - 256
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000018204 440_0 $$09161$$aPlant and Soil$$v341$$x0032-079X$$y1-2
000018204 500__ $$3POF3_Assignment on 2016-02-29
000018204 500__ $$aWe are grateful to the Deutsche Forschungsgemeinschaft which funded this study within the frame of Forschergruppe 788 'Competitive mechanisms of water and nitrogen partitioning in beech-dominated deciduous forests'. We also want to thank an anonymous reviewer whose comments helped to considerably improve the manuscript and we thank Sebastian Bittner for his help during the revision of the manuscript.
000018204 520__ $$aThe estimation of root water uptake and water flow in plants is crucial to quantify transpiration and hence the water exchange between land surface and atmosphere. In particular the soil water extraction by plant roots which provides the water supply of plants is a highly dynamic and non-linear process interacting with soil transport processes that are mainly determined by the natural soil variability at different scales. To better consider this root-soil interaction we extended and further developed a finite element tree hydro-dynamics model based on the one-dimensional (1D) porous media equation. This is achieved by including in addition to the explicit three-dimensional (3D) architectural representation of the tree crown a corresponding 3D characterisation of the root system. This 1D xylem water flow model was then coupled to a soil water flow model derived also from the 1D porous media equation. We apply the new model to conduct sensitivity analysis of root water uptake and transpiration dynamics and compare the results to simulation results obtained by using a 3D model of soil water flow and root water uptake. Based on data from lysimeter experiments with young European beech trees (Fagus silvatica L.) is shown, that the model is able to correctly describe transpiration and soil water flow. In conclusion, compared to a fully 3D model the 1D porous media approach provides a computationally efficient alternative, able to reproduce the main mechanisms of plant hydro-dynamics including root water uptake from soil.
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000018204 65320 $$2Author$$aTranspiration
000018204 65320 $$2Author$$aPlant hydro-dynamics model
000018204 65320 $$2Author$$aRoot water uptake
000018204 65320 $$2Author$$aEuropean beech
000018204 65320 $$2Author$$aPorous media equation
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000018204 7001_ $$0P:(DE-HGF)0$$aGayler, S.$$b1
000018204 7001_ $$0P:(DE-HGF)0$$aGessler, A.$$b2
000018204 7001_ $$0P:(DE-Juel1)129477$$aJavaux, M.$$b3$$uFZJ
000018204 7001_ $$0P:(DE-HGF)0$$aKlier, C.$$b4
000018204 7001_ $$0P:(DE-HGF)0$$aPriesack, E.$$b5
000018204 773__ $$0PERI:(DE-600)1478535-3$$a10.1007/s11104-010-0639-0$$gVol. 341, p. 233 - 256$$p233 - 256$$q341<233 - 256$$tPlant and soil$$v341$$x0032-079X$$y2011
000018204 8567_ $$uhttp://dx.doi.org/10.1007/s11104-010-0639-0
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