Articles | Volume 27, issue 14
https://doi.org/10.5194/hess-27-2703-2023
https://doi.org/10.5194/hess-27-2703-2023
Research article
 | 
21 Jul 2023
Research article |  | 21 Jul 2023

Impacts of soil management and climate on saturated and near-saturated hydraulic conductivity: analyses of the Open Tension-disk Infiltrometer Meta-database (OTIM)

Guillaume Blanchy, Lukas Albrecht, Gilberto Bragato, Sarah Garré, Nicholas Jarvis, and John Koestel

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Cited articles

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Alletto, L., Pot, V., Giuliano, S., Costes, M., Perdrieux, F., and Justes, E.: Temporal variation in soil physical properties improves the water dynamics modeling in a conventionally-tilled soil, Geoderma, 243–244, 18–28, https://doi.org/10.1016/j.geoderma.2014.12.006, 2015. 
Angulo-Jaramillo, R., Vandervaere, J. P., Roulier, S., Thony, J. L., Gaudet, J. P., and Vauclin, M.: Field measurement of soil surface hydraulic properties by disc and ring infiltrometers - A review and recent developments, Soil Till. Res., 55, 1–29, 2000. 
Ankeny, M. D., Ahmed, M., Kaspar, T. C., and Horton, R.: Simple field method for determining unsaturated hydraulic conductivity, Soil Sci. Soc. Am. J., 55, 467–470, 1991. 
Bagarello, V., Baiamonte, G., Castellini, M., Di Prima, S., and Iovino, M.: A comparison between the single ring pressure infiltrometer and simplified falling head techniques, Hydrol. Process., 28, 4843–4853, https://doi.org/10.1002/hyp.9980, 2014. 
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Short summary
We collated the Open Tension-disk Infiltrometer Meta-database (OTIM). We analysed topsoil hydraulic conductivities at supply tensions between 0 and 100 mm of 466 data entries. We found indications of different flow mechanisms at saturation and at tensions >20 mm. Climate factors were better correlated with near-saturated hydraulic conductivities than soil properties. Land use, tillage system, soil compaction and experimenter bias significantly influenced K to a similar degree to soil properties.
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