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.
Arya L. M., Farrell D. A., Blake G. R., A Field Study of Soil Water Depletion Patterns in Presence of Growing Soybean Roots: I. Determination of Hydraulic Properties of the Soil1, 10.2136/sssaj1975.03615995003900030021x
Bear, Dynamics of Fluids in Porous Media (1972)
Bouma J., Influence of Soil Macroporosity on Environmental Quality, Advances in Agronomy (1991) ISBN:9780120007462 p.1-37, 10.1016/s0065-2113(08)60577-5
Bouma J., Belmans C., Dekker L. W., Jeurissen W. J. M., Assessing the Suitability of Soils With Macropores for Subsurface Liquid Waste Disposal1, 10.2134/jeq1983.00472425001200030002x
Butters Greg L., Jury William A., Field scale transport of bromide in an unsaturated soil: 2. Dispersion modeling, 10.1029/wr025i007p01583
Chen C., Wagenet R.J., Simulation of water and chemicals in macropore soils Part 1. Representation of the equivalent macropore influence and its effect on soilwater flow, 10.1016/0022-1694(92)90106-6
Coats K.H., Smith B.D., Dead-End Pore Volume and Dispersion in Porous Media, 10.2118/647-pa
Dagan G., Stochastic modeling of groundwater flow by unconditional and conditional probabilities: 2. The solute transport, 10.1029/wr018i004p00835
Dagan Gedeon, Flow and Transport in Porous Formations, ISBN:9783540510987, 10.1007/978-3-642-75015-1
De Smedt F., Wierenga P. J., Approximate Analytical Solution for Solute Flow During Infiltration and Redistribution1, 10.2136/sssaj1978.03615995004200030006x
De Smedt F., Wauters F., Sevilla J., Study of tracer movement through unsaturated sand, 10.1016/0022-1694(86)90083-1
Durner Wolfgang, Hydraulic conductivity estimation for soils with heterogeneous pore structure, 10.1029/93wr02676
Durner W., Flühler H., Multi-domain model for pore-size dependent transport of solutes in soils, 10.1016/0016-7061(95)00083-6
Dyson J.S., White R.E., The effect of irrigation rate on solute transport in soil during steady water flow, 10.1016/0022-1694(89)90047-4
Einstein A., Über die von der molekularkinetischen Theorie der Wärme geforderte Bewegung von in ruhenden Flüssigkeiten suspendierten Teilchen, 10.1002/andp.19053220806
Flühler H., Durner W., Flury M., Lateral solute mixing processes — A key for understanding field-scale transport of water and solutes, 10.1016/0016-7061(95)00079-8
Flury Markus, Flühler Hannes, Jury William A., Leuenberger Jörg, Susceptibility of soils to preferential flow of water: A field study, 10.1029/94wr00871
Food and Agriculture Organization World Reference Base for Soil Resources Rome 1998
Gähwiller , P. Strukturen im Kleinbereich-Röntgentomographisches Bild der räumlichen Struktur eines marmorierten Braunerde-Pseudogley-Bodens in Rafz Switzerland 1997
GARDNER W. R., SOME STEADY-STATE SOLUTIONS OF THE UNSATURATED MOISTURE FLOW EQUATION WITH APPLICATION TO EVAPORATION FROM A WATER TABLE : , 10.1097/00010694-195804000-00006
Gerke H. H., van Genuchten M. T., A dual-porosity model for simulating the preferential movement of water and solutes in structured porous media, 10.1029/92wr02339
Gwo J.P., Jardine P.M., Wilson G.V., Yeh G.T., A multiple-pore-region concept to modeling mass transfer in subsurface media, 10.1016/0022-1694(94)02555-p
Jacques D., Vanderborght J., Mallants D., Kim D.-J., Vereecken H., Feyen J., Comparison of three stream tube models predicting field-scale solute transport, 10.5194/hess-1-873-1997
Jacques Diederik, Kim Dong-Ju, Diels Jan, Vanderborght Jan, Vereecken Harry, Feyen Jan, Analysis of steady state chloride transport through two heterogeneous field soils, 10.1029/98wr01873
JARVIS N. J., JANSSON P-E., DIK P. E., MESSING I., Modelling water and solute transport in macroporous soil. I. Model description and sensitivity analysis, 10.1111/j.1365-2389.1991.tb00091.x
Jury William A., Simulation of solute transport using a transfer function model, 10.1029/wr018i002p00363
Jury William A., Flühler Hannes, Transport of Chemicals Through Soil: Mechanisms, Models, and Field Applications, Advances in Agronomy (1992) ISBN:9780120007479 p.141-201, 10.1016/s0065-2113(08)60490-3
Jury, Transfer Functions and Solute Movement Through Soil: Theory and Application (1990)
Jury William A., Sposito Garrison, Field Calibration and Validation of Solute Transport Models for the Unsaturated Zone1, 10.2136/sssaj1985.03615995004900060002x
Kasteel , R. Solute transport in an unsaturated field soil: Describing heterogeneous flow fields using spatial distribution of hydraulic properties Switzerland 1997
Khan Anwar Ul-Hassan, Jury William A., A laboratory study of the dispersion scale effect in column outflow experiments, 10.1016/0169-7722(90)90001-w
Klotz D., Seiler K.-P., Moser H., Neumaier F., Dispersivity and velocity relationship from laboratory and field experiments, 10.1016/0022-1694(80)90018-9
Koch Sabine, Flühler Hannes, Lateral solute mixing in homogeneous and layered sand columns, 10.1016/0016-7061(94)90001-9
Kung K-J.S., Preferential flow in a sandy vadose zone: 2. Mechanism and implications, 10.1016/0016-7061(90)90007-v
Maraqa, J. Hydrol., 25, 199 (1997)
Neter, Applied Linear Statistical Models: Regression, Analysis of Variance, and Experimental Designs (1990)
Parker J. C., van Genuchten M. Th., Flux-Averaged and Volume-Averaged Concentrations in Continuum Approaches to Solute Transport, 10.1029/wr020i007p00866
Ritsema Coen J., Dekker Louis W., Distribution Flow: A General Process in the Top Layer of Water Repellent Soils, 10.1029/94wr02979
Ritsema Coen J., Dekker Louis W., Nieber John L., Steenhuis Tammo S., Modeling and field evidence of finger formation and finger recurrence in a water repellent sandy soil, 10.1029/97wr02407
Roth Kurt, Hammel Klaus, Transport of conservative chemical through an unsaturated two-dimensional Miller-similar medium with steady state flow, 10.1029/96wr00756
Roth K., Jury W. A., Flühler H., Attinger W., Transport of Chloride Through an Unsaturated Field Soil, 10.1029/91wr01771
Russo David, On the Velocity Covariance and Transport Modeling in Heterogeneous Anisotropic Porous Formations: 1. Saturated Flow, 10.1029/94wr01783
Russo David, On the Velocity Covariance and Transport Modeling in Heterogeneous Anisotropic Porous Formations: 2. Unsaturated Flow, 10.1029/94wr01784
Saffman P. G., Dispersion due to molecular diffusion and macroscopic mixing in flow through a network of capillaries, 10.1017/s0022112060001432
Seuntjens, Modelling of Transport Processes in Soils at Various Scales in Time and Space: Proceedings of the International Workshop of EurAgEng's Field of Interest on Soil and Water, 24-26 November 1999, Leuven, Belgium, 284 (1999)
Simmons C. S., A stochastic-convective transport representation of dispersion in one-dimensional porous media systems, 10.1029/wr018i004p01193
Steenhuis T.S., Parlance J.-Y., Andreini M.S., A numerical model for preferential solute movement in structured soils, 10.1016/0016-7061(90)90015-2
Taylor, Proc. London Math. Soc., A20, 196 (1921)
Taylor G., Dispersion of Soluble Matter in Solvent Flowing Slowly through a Tube, 10.1098/rspa.1953.0139
van Dam J. C., Stricker J. N. M., Droogers P., Inverse Method to Determine Soil Hydraulic Functions from Multistep Outflow Experiments, 10.2136/sssaj1994.03615995005800030002x
Vanderborght J., Vanclooster M., Mallants D., Feyen J., Gonzalez C., Effects of Soil Type and Water Flux on Solute Transport, 10.2136/sssaj1997.03615995006100020004x
Vanderborght J., Jacques D., Mallants D., Tseng P.-H., Feyen J., Comparison between field measurements and numerical simulation of steady-state solute transport in a heterogeneous soil profile, 10.5194/hess-1-853-1997
Vanderborght J., Timmerman A., Feyen J., Solute Transport for Steady-State and Transient Flow in Soils with and without Macropores, 10.2136/sssaj2000.6441305x
Vanderborght J., Jacques D., Feyen J., Deriving Transport Parameters from Transient Flow Leaching Experiments by Approximate Steady-State Flow Convection–Dispersion Models, 10.2136/sssaj2000.6441317x
Vervoort R. W., Radcliffe D. E., West L. T., Soil structure development and preferential solute flow, 10.1029/98wr02289
Wang Zhi, Feyen Jan, Ritsema Coen J., Susceptibility and predictability of conditions for preferential flow, 10.1029/98wr01761
Ward A. L., Kachanoski R. G., von Bertoldi A. P., Elrick D. E., Field and Undisturbed-Column Measurements for Predicting Transport in Unsaturated Layered Soil, 10.2136/sssaj1995.03615995005900010008x
White R. E., The Influence of Macropores on the Transport of Dissolved and Suspended Matter Through Soil, Advances in Soil Science (1985) ISBN:9781461295594 p.95-120, 10.1007/978-1-4612-5090-6_3
Zurmühl Torsten, Durner Wolfgang, Modeling Transient Water and Solute Transport in a Biporous Soil, 10.1029/95wr01678
Bibliographic reference
Vanderborght, J. ; Vanclooster, Marnik ; Timmerman, A ; Seuntjens, P ; Mallants, D ; et. al. Overview of inert tracer experiments in key Belgian soil types: Relation between transport and soil morphological and hydraulic properties. In: Water Resources Research, Vol. 37, no. 12, p. 2873-2888 (2001)