Benetzbarkeit im zusammenhang mit dem humifizierungsgrad der organischen substanz und ihr einfluß auf infiltration und wasserretentionskurven

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Translated title of the contributionWettability related to the degree of humiflcation of soil organic matter and its impact on infiltration and soil water retention curves
Original languageGerman
Pages (from-to)190-196
Number of pages7
JournalZeitschrift fur Kulturtechnik und Landentwicklung
Volume37
Issue number5
Publication statusPublished - 1996

Abstract

Degree of humification in soils with organic carbon contents of 1-5% was determined with the differential thermal analysis. Wetting angles on fine fraction material (63-100 μm) increased with the degree of humification and indicate severe water repellency for some of the soils. Results showed a considerable decrease of the infiltration rate of water into dry soils for contact angles >90 degrees. The lower water retention characteristics of the hydrophobic soils decreased the hydraulic conductivity at values near field capacity compared with soils which are only slightly water repellent. A method is proposed, by which the impact of the contact angle on water retention curves can be described in terms of the reversible work of adheasion. The effect of contact angle on soil hydraulic properties support the hypothesis, that wettability is an important property in dry and wet soils as well.

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Benetzbarkeit im zusammenhang mit dem humifizierungsgrad der organischen substanz und ihr einfluß auf infiltration und wasserretentionskurven. / Bachmann, J.
In: Zeitschrift fur Kulturtechnik und Landentwicklung, Vol. 37, No. 5, 1996, p. 190-196.

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abstract = "Degree of humification in soils with organic carbon contents of 1-5% was determined with the differential thermal analysis. Wetting angles on fine fraction material (63-100 μm) increased with the degree of humification and indicate severe water repellency for some of the soils. Results showed a considerable decrease of the infiltration rate of water into dry soils for contact angles >90 degrees. The lower water retention characteristics of the hydrophobic soils decreased the hydraulic conductivity at values near field capacity compared with soils which are only slightly water repellent. A method is proposed, by which the impact of the contact angle on water retention curves can be described in terms of the reversible work of adheasion. The effect of contact angle on soil hydraulic properties support the hypothesis, that wettability is an important property in dry and wet soils as well.",
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TY - JOUR

T1 - Benetzbarkeit im zusammenhang mit dem humifizierungsgrad der organischen substanz und ihr einfluß auf infiltration und wasserretentionskurven

AU - Bachmann, J.

N1 - Copyright: Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.

PY - 1996

Y1 - 1996

N2 - Degree of humification in soils with organic carbon contents of 1-5% was determined with the differential thermal analysis. Wetting angles on fine fraction material (63-100 μm) increased with the degree of humification and indicate severe water repellency for some of the soils. Results showed a considerable decrease of the infiltration rate of water into dry soils for contact angles >90 degrees. The lower water retention characteristics of the hydrophobic soils decreased the hydraulic conductivity at values near field capacity compared with soils which are only slightly water repellent. A method is proposed, by which the impact of the contact angle on water retention curves can be described in terms of the reversible work of adheasion. The effect of contact angle on soil hydraulic properties support the hypothesis, that wettability is an important property in dry and wet soils as well.

AB - Degree of humification in soils with organic carbon contents of 1-5% was determined with the differential thermal analysis. Wetting angles on fine fraction material (63-100 μm) increased with the degree of humification and indicate severe water repellency for some of the soils. Results showed a considerable decrease of the infiltration rate of water into dry soils for contact angles >90 degrees. The lower water retention characteristics of the hydrophobic soils decreased the hydraulic conductivity at values near field capacity compared with soils which are only slightly water repellent. A method is proposed, by which the impact of the contact angle on water retention curves can be described in terms of the reversible work of adheasion. The effect of contact angle on soil hydraulic properties support the hypothesis, that wettability is an important property in dry and wet soils as well.

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KW - Degree of humification

KW - Hydraulic properties

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VL - 37

SP - 190

EP - 196

JO - Zeitschrift fur Kulturtechnik und Landentwicklung

JF - Zeitschrift fur Kulturtechnik und Landentwicklung

SN - 0934-666X

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ER -

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