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Heterogeneity of water flow in grassland soil during irrigation experiment

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    0436756 - ÚH 2015 RIV SK eng J - Článek v odborném periodiku
    Lichner, Ľ. - Dušek, J. - Tesař, Miroslav - Czachor, H. - Mészároš, I.
    Heterogeneity of water flow in grassland soil during irrigation experiment.
    Biologia. Roč. 69, č. 11 (2014), s. 1555-1561. ISSN 0006-3088. E-ISSN 1336-9563
    Grant CEP: GA TA ČR(CZ) TA0201451
    Grant ostatní: ERDF ITMS26240120004
    Institucionální podpora: RVO:67985874
    Klíčová slova: degree of preferential flow * effective cross section * infiltration experiment * radioactive tracer technique * sandy soil
    Kód oboru RIV: DA - Hydrologie a limnologie
    Impakt faktor: 0.827, rok: 2014

    The heterogeneity of water flow was evaluated in sandy loam soil covered by grass. The radioactive tracer infiltration experiment was performed at two parallel plots with different irrigation intensities. Effective cross section and degree of preferential flow parameters were used to evaluate flow regime during the experiment. For both plots, the heterogeneity of water flow increased with depth. The differences in irrigation intensity did not result in different values of the effective cross section and degree of preferential flow, indicating similar flow regime within the two experimental plots. The heterogeneity of water flow in shallower depths (0–50 cm) did not change with cumulative infiltration except for early times/small cumulative infiltrations, when the flow paths of preferential flow were formed. In deeper depths (60–70 cm) the flow paths of preferential flow were formed later, and therefore, the heterogeneity of water changed with cumulative infiltration.
    Trvalý link: http://hdl.handle.net/11104/0240440

     
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