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Soil water regime in head water regions - observation, assessment and modelling
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SYSNO ASEP 0196162 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Soil water regime in head water regions - observation, assessment and modelling Author(s) Tesař, Miroslav (UH-J) ORCID, SAI, RID
Šír, Miloslav (UH-J) ORCID, RID, SAI
Syrovátka, Oldřich (ENTU-I)
Pražák, Josef (UT-L) RID
Lichner, Ľ. (SK)
Kubík, F. (CZ)Source Title Journal of Hydrology and Hydromechanics. - : Ústav pro hydromechaniku AV ČR, v. v. i.. - : Ústav hydrológie SAV - ISSN 0042-790X
Roč. 49, č. 6 (2001), s. 355-375Number of pages 6 s. Language eng - English Country CZ - Czech Republic Keywords soil water regime ; rainfall-runoff relationship ; evapotranspiration Subject RIV DA - Hydrology ; Limnology R&D Projects KSK3046108 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) Annotation The present article demonstrates the impact of water content in soil profile. The expample of the soil water regime during the vegetation season is applied to show two alternative types of soil water movement: the diffusion type flow (DTF) in drier soils and the instability-driven flow (IDF) in soils with a higher soil moisture content. This responds to two phases of soil water regime alternation - the precolation phase (IDF is taking place) and accumulation phase (DTF is taking place). In the course of the percolation phase, the infiltrating rain water flows through the soil without causing any considerable increment of water content in the soil profile. During the accumulation phase rain water accumulates in the soil,without practically flowing through the soil profile. The soil profile functions like a reservoir filled with rain water and emptied by the withdrawal of water for plant transpiration. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2002
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