EGU22-1962
https://doi.org/10.5194/egusphere-egu22-1962
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Modeling the translocation and transformation of chemicals in the soil-plant continuum: a dynamic plant uptake module for the HYDRUS model

Giuseppe Brunetti1, Jirka Šimůnek2, and Radka Kodešová3
Giuseppe Brunetti et al.
  • 1Institute for Soil Physics and Rural Water Management, University of Natural Resources and Life Sciences, Vienna, Austria (giuseppe.brunetti@boku.ac.at)
  • 2Department of Environmental Sciences, University of California, Riverside, USA (jsimunek@ucr.edu)
  • 3Department of Soil Science and Soil Protection, Czech University of Life Sciences, Czech Republic (kodesova@af.czu.cz)

Soil pollution from neutral and ionizable compounds poses a significant threat to water resources management and food production. The development of numerical models to describe their reactive transport in the soil-plant domain is of paramount importance to elaborate mitigation strategies. However, most existing models simplify the description of physicochemical processes in soil and plants, mass transfer processes between soil and plants and in plants, and transformation in plants. To fill this scientific gap, we first coupled the widely used hydrological model, HYDRUS, with a multi-compartment dynamic plant uptake model, which accounts for differentiated multiple metabolization pathways in plant’s tissues. The model, which is able to simulate the reactive transport of neutral compounds, has been successfully validated against experimental data, and integrated in the Graphical User Interface of the HYDRUS software suite. To further extend its domain of applicability, we have recently adapted its theoretical framework to simulate the translocation of ionizable compounds. The new modeling framework connects a biophysical multi-organelles model to describe processes at the cell level with a semi-mechanistic soil-plant model, and accounts for dissociation processes and electrical interactions with cell biomembranes. Validation against experimental data showed encouraging results and opens new perspectives for its use for predictive and explanatory purposes.

 

References

Šimůnek, J., G. Brunetti, and R. Kodešová, Modeling the translocation and transformation of chemicals in the soil-plant continuum: A dynamic plant uptake module for the HYDRUS model, AGU Annual Meeting, ID 810092, New Orleans, Louisiana, December 13-17, 2021.

How to cite: Brunetti, G., Šimůnek, J., and Kodešová, R.: Modeling the translocation and transformation of chemicals in the soil-plant continuum: a dynamic plant uptake module for the HYDRUS model, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-1962, https://doi.org/10.5194/egusphere-egu22-1962, 2022.