An influence of changing the humic acids content on soil water repellency and saturated hydraulic conductivity

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Title:An influence of changing the humic acids content on soil water repellency and saturated hydraulic conductivity
Creators:
Babejová, Natália; babejova at uh dot savba dot sk; Institute of Hydrology, Slovak Academy of Sciences, Račianska 75, P.O.Box 94, Bratislava, Slovak Republic
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 49, 5, pp. 291-300
Uncontrolled Keywords:Water Repellency, Saturated Hydraulic Conductivity, Humic Acids

Abstract

An influence of changing the humic acids content on soil water repellency and saturated hydraulic conductivity was studied on soil samples of Mollic Gleysol from Čiližská Radvaň in the Danubian Lowland. Water repellency was measured with the water drop penetration time (WDPT) test on original soil samples and on soil samples with increased humic acids content. Saturated hydraulic conductivity coefficient was measured on the above-mentioned samples with falling head permeameter. From the results of measuring it follows that an increasing of humic acids content in soil resulted in an decreasing of the coefficient of saturated hydraulic conductivity of the soil under study. Original soil was non-water reppelent soil. Already a small increasing of humic acids content in soil (in 17.9 % at original amount) caused that the soil became slightly or strongly water repellent in the average of soil moisture 15-30 %. At soil moisture less than 15 % time of penetration decreased probably as a result of shrinking and cracking of the soil. Water repellency of soil samples from horizon 0 - 5 cm was usually higher than water repellency of soil samples from horizon 5 - 10 cm both in case of humic acids extracted from peat and in case of humic acids extracted from the same soil from Čiližská Radvaň.

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Title:An influence of changing the humic acids content on soil water repellency and saturated hydraulic conductivity
Translated title:Vplyv zmeny obsahu humínových kyselín na vodoodpudivosť a nasýtenú hydraulickú vodivosť
Creators:
Babejová, Natália; babejova at uh dot savba dot sk; Institute of Hydrology, Slovak Academy of Sciences, Račianska 75, P.O.Box 94, Bratislava, Slovak Republic
Uncontrolled Keywords:Water Repellency, Saturated Hydraulic Conductivity, Humic Acids
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:49
Number:5
Page Range:pp. 291-300
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:6167
Item Type:Article
Deposited On:30 Jun 2010 16:21
Last Modified:30 Jun 2010 14:21

Citation

Babejová, Natália (2001) An influence of changing the humic acids content on soil water repellency and saturated hydraulic conductivity. Journal of Hydrology and Hydromechanics, 49 (5). pp. 291-300. ISSN 0042-790X

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