Details
| Translated title of the contribution | Wettability related to the degree of humiflcation of soil organic matter and its impact on infiltration and soil water retention curves |
|---|---|
| Original language | German |
| Pages (from-to) | 190-196 |
| Number of pages | 7 |
| Journal | Zeitschrift fur Kulturtechnik und Landentwicklung |
| Volume | 37 |
| Issue number | 5 |
| Publication status | Published - 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.
ASJC Scopus subject areas
- Social Sciences(all)
- Geography, Planning and Development
- Environmental Science(all)
- Water Science and Technology
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In: Zeitschrift fur Kulturtechnik und Landentwicklung, Vol. 37, No. 5, 1996, p. 190-196.
Research output: Contribution to journal › Article › Research › peer review
}
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.
KW - Contact angle
KW - Degree of humification
KW - Hydraulic properties
UR - http://www.scopus.com/inward/record.url?scp=0001113270&partnerID=8YFLogxK
M3 - Artikel
AN - SCOPUS:0001113270
VL - 37
SP - 190
EP - 196
JO - Zeitschrift fur Kulturtechnik und Landentwicklung
JF - Zeitschrift fur Kulturtechnik und Landentwicklung
SN - 0934-666X
IS - 5
ER -