Počet záznamů: 1
Ponded infiltration in a grid of permanent single-ring infiltrometers: Spatial versus temporal variability
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SYSNO ASEP 0476340 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Ponded infiltration in a grid of permanent single-ring infiltrometers: Spatial versus temporal variability Tvůrce(i) Votrubová, J. (CZ)
Dohnal, M. (CZ)
Vogel, T. (CZ)
Tesař, Miroslav (UH-J) ORCID, SAI, RID
Jelínková, V. (CZ)
Cislerova, M. (CZ)Zdroj.dok. Journal of Hydrology and Hydromechanics. - : Ústav pro hydromechaniku AV ČR, v. v. i.. - : Ústav hydrológie SAV - ISSN 0042-790X
Roč. 65, č. 3 (2017), s. 244-253Poč.str. 10 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. SK - Slovensko Klíč. slova soil infiltrability ; infiltration instability ; infiltration modes ; burrowing animals ; preferential flow Vědní obor RIV DA - Hydrologie a limnologie Obor OECD Hydrology CEP GA16-05665S GA ČR - Grantová agentura ČR Institucionální podpora UH-J - RVO:67985874 UT WOS 000406362800005 EID SCOPUS 85010476897 DOI 10.1515/johh-2017-0015 Anotace Temporal variability of the soil hydraulic properties is still an open issue. The present study deals with results of ponded infiltration experiments performed annually in a grid of permanent measurement points (18 spatial and 14 temporal replicates). Single ring infiltrometers were installed in 2003 at a meadow site in the Bohemian Forest highlands, the Czech Republic. The soil at the plot is coarse sandy loam classified as oligotrophic Eutric Cambisol. Soil water flow below infiltration rings has distinctly preferential character.
The results are marked with substantial interannual changes of observed infiltration rates. Considering just the results from the initial four years of the study, the temporal variability did not exceed the spatial variability detected in individual years. In later years, a shift to extremely high infiltration rates was observed. We hypothesize that it is related to structural changes of the soil profile possibly related to combined effect of soil biota activity, climatic conditions and experimental procedure. Interestingly, the temporal changes can partly be described as fluctuations between seemingly stable infiltration modes. This phenomenon was detected in the majority of rings and was found independent of the initial soil moisture conditions.Pracoviště Ústav pro hydrodynamiku Kontakt Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Rok sběru 2018
Počet záznamů: 1