Overview of inert tracer experiments in key Belgian soil types

Relation between transport and soil morphological and hydraulic properties

J. Vanderborght, M. Vanclooster, A. Timmerman, P. Seuntjens, D. Mallants, Dong Ju Kim, D. Jacques, L. Hubrechts, C. Gonzalez, J. Feyen, J. Diels, J. Deckers

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

To investigate relations between solute transport, soil properties, and experimental conditions, we summarize results from leaching experiments that we carried out in a range of soils, at different scales (column (0.3-1.0 m ID, 1.0 m length) and field plot scale), and using different leaching rates (0.5-30 cm d-1). The lateral mixing regime and longitudinal dispersion were derived from time series of tracer concentrations at several depths in the soil. Field- and column-scale transport were similar in loam and silt loam soils. The mixing regime was related to soil morphological features, such as vertical tongues, stratification, macropores, and a water-repellent layer. The dispersion increased in all soils more than linearly with increasing leaching rate, implying that the dispersivity is not an intrinsic soil characteristic. The change of dispersivity with leaching rate was linked to the unsaturated hydraulic conductivity using a multidomain conceptualization of the pore space.

Original languageEnglish
Pages (from-to)2873-2888
Number of pages16
JournalWater Resources Research
Volume37
Issue number12
DOIs
Publication statusPublished - 2001 Dec 1
Externally publishedYes

Fingerprint

hydraulic property
soil type
tracer techniques
soil types
leaching
fluid mechanics
tracer
Hydraulics
Soils
Leaching
soil
soil morphological features
dispersivity
experiment
Experiments
loam
unsaturated hydraulic conductivity
soil transport processes
macropores
silt loam soils

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Aquatic Science
  • Water Science and Technology

Cite this

Overview of inert tracer experiments in key Belgian soil types : Relation between transport and soil morphological and hydraulic properties. / Vanderborght, J.; Vanclooster, M.; Timmerman, A.; Seuntjens, P.; Mallants, D.; Kim, Dong Ju; Jacques, D.; Hubrechts, L.; Gonzalez, C.; Feyen, J.; Diels, J.; Deckers, J.

In: Water Resources Research, Vol. 37, No. 12, 01.12.2001, p. 2873-2888.

Research output: Contribution to journalArticle

Vanderborght, J, Vanclooster, M, Timmerman, A, Seuntjens, P, Mallants, D, Kim, DJ, Jacques, D, Hubrechts, L, Gonzalez, C, Feyen, J, Diels, J & Deckers, J 2001, 'Overview of inert tracer experiments in key Belgian soil types: Relation between transport and soil morphological and hydraulic properties', Water Resources Research, vol. 37, no. 12, pp. 2873-2888. https://doi.org/10.1029/2000WR000110
Vanderborght, J. ; Vanclooster, M. ; Timmerman, A. ; Seuntjens, P. ; Mallants, D. ; Kim, Dong Ju ; Jacques, D. ; Hubrechts, L. ; Gonzalez, C. ; Feyen, J. ; Diels, J. ; Deckers, J. / Overview of inert tracer experiments in key Belgian soil types : Relation between transport and soil morphological and hydraulic properties. In: Water Resources Research. 2001 ; Vol. 37, No. 12. pp. 2873-2888.
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