Skip to Main content Skip to Navigation
New interface
Journal articles

Use of class pedotransfer functions based on texture and bulk density of clods to generate water retention curves.

Abstract : Water retention properties of 219 horizons were measured in Cambisols, Luvisols and Fluvisols, mainly from the Paris basin. We derived class pedotransfer functions (class PTFs) based on texture alone and in a second stage class PTFs based on classes combining texture and clod bulk density. The performance of these two types of PTFs were discussed at –330 and –15000 hPa water potential on an independent set of 221 horizons. Results showed that PTFs based on sets grouped by texture and clod bulk density provide estimates with an accuracy that is (i) greater than with class PTFs based on texture alone, and (ii) similar to the estimation accuracy recorded with continuous PTFs. As a consequence, the lack of interest in class PTFs should be reconsidered to bridge the gap between the available basic soil data and hydraulic properties which are generally missing, particularly when pertinent soil characteristics can be derived from the data available in soil databases. The two types of class PTFs providing gravimetric water contents at seven water potentials ranging from –10 to –15 000 hPa were converted to volumetric water content using the soil bulk density. Finally, the parameters of van Genuchten‘s water retention curve model were computed for every class PTF.
Document type :
Journal articles
Complete list of metadata
Contributor : Nathalie POTHIER Connect in order to contact the contributor
Submitted on : Thursday, April 6, 2017 - 2:58:42 PM
Last modification on : Tuesday, October 19, 2021 - 6:59:12 PM
Long-term archiving on: : Friday, July 7, 2017 - 2:46:06 PM


Files produced by the author(s)


Distributed under a Creative Commons Attribution - NonCommercial - NoDerivatives 4.0 International License




Ary Bruand, P. Perez-Fernandez, Odile Duval. Use of class pedotransfer functions based on texture and bulk density of clods to generate water retention curves.. Soil Use and Management, 2003, 19, pp.232-242. ⟨10.1079/SUM2003196⟩. ⟨hal-00069364⟩



Record views


Files downloads