The impact of vegetation on hydraulic conductivity of sandy soil
Result description
The objective of this study was to assess an impact of vegetation on the hydraulic conductivity of sandy soil at the locality Mláky II at Sekule (southwest Slovakia). It was found that the unsaturated hydraulic conductivity kr(?2 cm) reduced due to the soil water repellency increased in the same order: Forest soil < Glade soil Meadow soil < pure sand, as there decreased the water drop penetration time tp: Forest soil > Glade soil Meadow soil > Pure sand, which could refer to an inverse proportionality between the capillary suction and hydrophobic coating of soil particles. The saturated hydraulic conductivity Ks increased in the order as follows: Meadow soil < Glade soil Forest soil < Pure sand, and more than two-times higher Ks at both the Forest andGlade sites than that at the Meadow site could be a result of both the patchy growth of vegetation with some areas of bare soil at the Glade site and the macropores (dead roots) in more homogeneous humic top-layer at the Forest site.
Keywords
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
The impact of vegetation on hydraulic conductivity of sandy soil
Original language description
The objective of this study was to assess an impact of vegetation on the hydraulic conductivity of sandy soil at the locality Mláky II at Sekule (southwest Slovakia). It was found that the unsaturated hydraulic conductivity kr(?2 cm) reduced due to the soil water repellency increased in the same order: Forest soil < Glade soil Meadow soil < pure sand, as there decreased the water drop penetration time tp: Forest soil > Glade soil Meadow soil > Pure sand, which could refer to an inverse proportionality between the capillary suction and hydrophobic coating of soil particles. The saturated hydraulic conductivity Ks increased in the order as follows: Meadow soil < Glade soil Forest soil < Pure sand, and more than two-times higher Ks at both the Forest andGlade sites than that at the Meadow site could be a result of both the patchy growth of vegetation with some areas of bare soil at the Glade site and the macropores (dead roots) in more homogeneous humic top-layer at the Forest site.
Czech name
Vliv vegetace na hydraulickou vodivost písčité půdy
Czech description
Cílem této studie bylo vyhodnocení vlivu vegetace na hydraulickou vodivost v lokalitě Mláky II v Sekule (jihozápadní Slovensko). Zjistili jsme, že nenasycená hydraulická vodivost kr(-2 cm) redukovaná vodoodpudivostí roste v pořadí: Les < Holina Louka < Písek, protože klesal čas proniknutí vodní kapky tp: Les > Holina Louka > Písek, což je možné také popsat jako nepřímou úměrnost mezi kapilárním zdvihem a hydrofobním obalem půdních částic. Saturovaná hydraulická vodivost Ks roste v následujícím pořadí: Louka < Holina Les < Písek. Více než dvojnásobná hodnota Ks v Lese a na Holině může být výsledkem jak nepravidelného růstu vegetace na Mokřině s nepravidelnými holými oblastmi, tak makropóry (odumřelé kořeny) v homogennější humusové svrchní vrstvě v Lese.Obtokový podíl Br toku póry o průměru r větším než přibližně 0,5 mm klesá v pořadí: Les > Louka > Holina > Písek, což ukazuje přednostní tok makropóry v Lese a zanedbatelný podíl makropórů v Písku.
Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DA - Hydrology and limnology
OECD FORD branch
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Result continuities
Project
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2007
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Soil & Water Research
ISSN
1801-5395
e-ISSN
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Volume of the periodical
2
Issue of the periodical within the volume
2
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
8
Pages from-to
59-66
UT code for WoS article
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EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
DA - Hydrology and limnology
Year of implementation
2007