Articles | Volume 29, issue 6
https://doi.org/10.5194/hess-29-1759-2025
https://doi.org/10.5194/hess-29-1759-2025
Research article
 | 
28 Mar 2025
Research article |  | 28 Mar 2025

From hydraulic root architecture models to efficient macroscopic sink terms including perirhizal resistance: quantifying accuracy and computational speed

Daniel Leitner, Andrea Schnepf, and Jan Vanderborght

Model code and software

Plant-Root-Soil-Interactions-Modelling/dumux-rosi: Leitner2025_HESS_upscaling (Version Publication2025) D. Leitner et al. https://doi.org/10.5281/zenodo.14732324

Plant-Root-Soil-Interactions-Modelling/CPlantBox: Leitner2025_HESS_upscaling (Version Publication2025) D. Leitner et al. https://doi.org/10.5281/zenodo.14732319

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Short summary
Root water uptake strongly affects plant development and soil water balance. We use novel upscaling methods to develop land surface and crop models from detailed mechanistic models. We examine the mathematics behind this upscaling, pinpointing where errors occur. By simulating different crops and soils, we found that the accuracy loss varies based on root architecture and soil type. Our findings offer insights into balancing model complexity and accuracy for better predictions in agriculture.
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