Heterogeneous solute flow in a sandy soil under a pine forest: Evaluation of a modeling concept

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Markus Deurer
  • Wilhelmus H.M. Duijnisveld
  • Jürgen Böttcher
  • Gunther Klump

Externe Organisationen

  • Bundesanstalt für Geowissenschaften und Rohstoffe (BGR)
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Seiten (von - bis)601-610
Seitenumfang10
FachzeitschriftJournal of Plant Nutrition and Soil Science
Jahrgang164
Ausgabenummer6
PublikationsstatusVeröffentlicht - Dez. 2001

Abstract

This study investigated the heterogeneous water characteristic functions and hydraulic conductivities for a gleyic podzol under a coniferous forest 40 km northeast of Hannover, Germany. The hydraulic properties were parameterized with the van Genuchten model. Reference functions and sets of scaling factors were derived for every horizon. The scaling factors showed correlation lengths of about 0.2 m. Along a 10 m long transect the spatially variable rain throughfall as the upper boundary and the groundwater level as the lower boundary was measured. A tracer experiment was conducted for the period of main groundwater recharge. Using the independent measurements of heterogeneous hydraulic properties, we simulated the solute transport for this period with a conventional model that solves the Richards' equation for water flow and the convective dispersive equation for solute transport. We found qualitative agreement between some features of the measured and modeled solute transport such as its channel-like structure. However, the partly preferential flow of solutes and the correspondingly large dispersivities could not be modeled.

ASJC Scopus Sachgebiete

Zitieren

Heterogeneous solute flow in a sandy soil under a pine forest: Evaluation of a modeling concept. / Deurer, Markus; Duijnisveld, Wilhelmus H.M.; Böttcher, Jürgen et al.
in: Journal of Plant Nutrition and Soil Science, Jahrgang 164, Nr. 6, 12.2001, S. 601-610.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Deurer M, Duijnisveld WHM, Böttcher J, Klump G. Heterogeneous solute flow in a sandy soil under a pine forest: Evaluation of a modeling concept. Journal of Plant Nutrition and Soil Science. 2001 Dez;164(6):601-610. doi: 10.1002/1522-2624(200112)164:6<601::AID-JPLN601>3.0.CO;2-Q
Deurer, Markus ; Duijnisveld, Wilhelmus H.M. ; Böttcher, Jürgen et al. / Heterogeneous solute flow in a sandy soil under a pine forest : Evaluation of a modeling concept. in: Journal of Plant Nutrition and Soil Science. 2001 ; Jahrgang 164, Nr. 6. S. 601-610.
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T1 - Heterogeneous solute flow in a sandy soil under a pine forest

T2 - Evaluation of a modeling concept

AU - Deurer, Markus

AU - Duijnisveld, Wilhelmus H.M.

AU - Böttcher, Jürgen

AU - Klump, Gunther

N1 - Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

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N2 - This study investigated the heterogeneous water characteristic functions and hydraulic conductivities for a gleyic podzol under a coniferous forest 40 km northeast of Hannover, Germany. The hydraulic properties were parameterized with the van Genuchten model. Reference functions and sets of scaling factors were derived for every horizon. The scaling factors showed correlation lengths of about 0.2 m. Along a 10 m long transect the spatially variable rain throughfall as the upper boundary and the groundwater level as the lower boundary was measured. A tracer experiment was conducted for the period of main groundwater recharge. Using the independent measurements of heterogeneous hydraulic properties, we simulated the solute transport for this period with a conventional model that solves the Richards' equation for water flow and the convective dispersive equation for solute transport. We found qualitative agreement between some features of the measured and modeled solute transport such as its channel-like structure. However, the partly preferential flow of solutes and the correspondingly large dispersivities could not be modeled.

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