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3D FEM modeling of root uptake in a sandy soil

Author(s): S. Ferrarisfand & C.G. allot Abstract: The mathematical modeling of plant root uptake in soils is an open issue due, on the one hand, to the complexity of representing roots as mathemat- ical entities, and, on the other hand, to the degree of uncertainty connected to their distribution. Furthermore, a pointwise spatial and temporal knowl- edge of root uptake is not available, thus a modelization of root flow as a separate system is not expected to furnish reliable results. Roots' effects are accounted for in unsaturated flow models as source/sink terms for which a spatial multivariate distribution is here assumed. Within this context, we present the results obtained by three-dimensional simulations of root uptake in a heterogeneous sandy soil. The results are compared with three-dimensional field measurements in order t... Pages: 8 Size: 656 kb Paper DOI: 10.2495/CMWR980411

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Download the Full Article This article is part of the WIT OpenView scheme and you can download the full text Adobe PDF article for FREE by clicking the 'Openview' icon to the right.