Validité de l’estimation des propriétés de rétention en eau de sols syriens à partir de fonctions et classes de pédotransfert développées pour des sols français

Abstract : To address the lack of data on water retention properties of the Syrian soils, continuous and class pedotransfer functions (FPT and CPT, respectively) established for soils of the French territory were tested on soils originating from four regions of Syria. The samples were collected when the soil water content was near field capacity in winter. The composition of the samples and their water content at seven water potentials were determined. The prediction bias is calculated using the average prediction error (EMP), the precision using the standard error of prediction (ETP) and global quality of the prediction with the mean quadratic error (EQM). The results show that the best prediction was recorded with the FPT established with the water content at field capacity, in particular when they were established after stratification by texture class. This improvement in prediction after stratification by texture class is linked to the fact that the shape of the water retention curve varies with texture, a point of the curve not bringing the same information according to the class of texture. The values of the prediction bias and precision recorded with the FPT and CPT studied are close to those recorded when these FPT and CPT were tested on soils originating from the French territory. Finally, such results are encouraging and support the use pedotransfer.
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Hassan Al Majou, R Kaba, W Almesber, Ary Bruand. Validité de l’estimation des propriétés de rétention en eau de sols syriens à partir de fonctions et classes de pédotransfert développées pour des sols français. Etude et Gestion des Sols, Association française pour l'"étude des sols, 2016, 23, pp.112-123. ⟨insu-01365390⟩

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