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@ARTICLE{Janott:18204,
      author       = {Janott, M. and Gayler, S. and Gessler, A. and Javaux, M.
                      and Klier, C. and Priesack, E.},
      title        = {{A} one-dimensional model of water flow in soil-plant
                      systems based on plant architecture},
      journal      = {Plant and soil},
      volume       = {341},
      issn         = {0032-079X},
      address      = {Dordrecht [u.a.]},
      publisher    = {Springer Science + Business Media B.V},
      reportid     = {PreJuSER-18204},
      pages        = {233 - 256},
      year         = {2011},
      note         = {We 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.},
      abstract     = {The 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.},
      keywords     = {J (WoSType)},
      cin          = {IBG-3},
      ddc          = {570},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Agronomy / Plant Sciences / Soil Science},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000288455300019},
      doi          = {10.1007/s11104-010-0639-0},
      url          = {https://juser.fz-juelich.de/record/18204},
}