<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Stony soils are composed of two fractions (rock fragments and fine soil) with different hydrophysical characteristics. Although stony soils are abundant in many catchments, their properties are still not well understood. This manuscript presents an application of the simple methodology for deriving water retention properties of stony soils, taking into account a correction for the soil stoniness. Variations in the water retention of the fine soil fraction and its impact on both the soil water storage and the bottom boundary fluxes are studied as well. The deterministic water flow model HYDRUS-1D is used in the study. The results indicate that the presence of rock fragments in a moderate-to-high stony soil can decrease the soil water storage by 23% or more and affect the soil water dynamics. Simulated bottom fluxes increased or decreased faster, and their maxima during the wet period were larger in the stony soil compared to the non-stony one.</p></abstract>

Stony soils are composed of two fractions (rock fragments and fine soil) with different hydrophysical characteristics. Although stony soils are abundant in many catchments, their properties are still not well understood. This manuscript presents an application of the simple methodology for deriving water retention properties of stony soils, taking into account a correction for the soil stoniness. Variations in the water retention of the fine soil fraction and its impact on both the soil water storage and the bottom boundary fluxes are studied as well. The deterministic water flow model HYDRUS-1D is used in the study. The results indicate that the presence of rock fragments in a moderate-to-high stony soil can decrease the soil water storage by 23% or more and affect the soil water dynamics. Simulated bottom fluxes increased or decreased faster, and their maxima during the wet period were larger in the stony soil compared to the non-stony one.

The influence of stony soil properties on water dynamics modeled by the HYDRUS model

Institute of Hydrology, Slovak Academy of Sciences

Journal of Hydrology and Hydromechanics

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Stony soils are composed of two fractions (rock fragments and fine soil) with different hydrophysical characteristics. Although stony soils are abundant in...

The influence of stony soil properties on water dynamics modeled by the HYDRUS model

Pubblicato online: 06 feb 2018

Pagine: 181 - 188

Ricevuto: 11 mag 2017

Accettato: 17 ago 2017

DOI: https://doi.org/10.1515/johh-2017-0052

Parole chiave
Rock fragments, Soil water retention, Water storage, Outflow, Numerical modeling, HYDRUS-1D

© 2018 Hana Hlaváčiková et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The influence of stony soil properties on water dynamics modeled by the HYDRUS model

Pubblicato online: 06 feb 2018

Pagine: 181 - 188

Ricevuto: 11 mag 2017

Accettato: 17 ago 2017

DOI: https://doi.org/10.1515/johh-2017-0052

Parole chiaveRock fragments, Soil water retention, Water storage, Outflow, Numerical modeling, HYDRUS-1D

© 2018 Hana Hlaváčiková et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Parole chiave
Rock fragments, Soil water retention, Water storage, Outflow, Numerical modeling, HYDRUS-1D