Details
| Original language | English |
|---|---|
| Pages (from-to) | 601-610 |
| Number of pages | 10 |
| Journal | Journal of Plant Nutrition and Soil Science |
| Volume | 164 |
| Issue number | 6 |
| Publication status | Published - Dec 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.
Keywords
- Conditional simulation, Geostatistics, Preferential, Scaling
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Soil Science
- Agricultural and Biological Sciences(all)
- Plant Science
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In: Journal of Plant Nutrition and Soil Science, Vol. 164, No. 6, 12.2001, p. 601-610.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
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.
PY - 2001/12
Y1 - 2001/12
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.
AB - 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.
KW - Conditional simulation
KW - Geostatistics
KW - Preferential
KW - Scaling
UR - http://www.scopus.com/inward/record.url?scp=0013214823&partnerID=8YFLogxK
U2 - 10.1002/1522-2624(200112)164:6<601::AID-JPLN601>3.0.CO;2-Q
DO - 10.1002/1522-2624(200112)164:6<601::AID-JPLN601>3.0.CO;2-Q
M3 - Article
AN - SCOPUS:0013214823
VL - 164
SP - 601
EP - 610
JO - Journal of Plant Nutrition and Soil Science
JF - Journal of Plant Nutrition and Soil Science
SN - 1436-8730
IS - 6
ER -