The influence of stony soil properties on water dynamics modeled by the HYDRUS model
| Autor: | Michal Danko, Jozef Hlavčo, Hana Hlaváčiková, Viliam Novák, Zdeněk Kostka |
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| Rok vydání: | 2018 |
| Předmět: |
Fluid Flow and Transfer Processes
Hydrus Mechanical Engineering 0208 environmental biotechnology rock fragments water storage Soil science Hydraulic engineering 04 agricultural and veterinary sciences 02 engineering and technology outflow 020801 environmental engineering numerical modeling Water dynamics soil water retention hydrus-1d 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Soil properties TC1-978 Water Science and Technology |
| Zdroj: | Journal of Hydrology and Hydromechanics, Vol 66, Iss 2, Pp 181-188 (2018) |
| ISSN: | 0042-790X |
| DOI: | 10.1515/johh-2017-0052 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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