Coupling published pedotransfer functions for the estimation of bulk density and saturated hydraulic conductivity in stony soils
Nasri B.; Fouche O.; Torri D., 2015, Coupling published pedotransfer functions for the estimation of bulk density and saturated hydraulic conductivity in stony soils,
Catena (Cremling.) 131 (2015): 99–108. doi_10.1016/j.catena.2015.03.018,
URL: http://www.cnr.it/prodotto/i/340292
Saturated hydraulic conductivity (Ks) is one of the key parameters in the design of engineering and environmental structures built in the unsaturated zone for infiltration purpose. Unfortunately, its field determination is laborious and expensive and suffers non-uniqueness. Besides, pedotransfer functions (PTFs) have been established to translate some measured soil matrix properties such as bulk density, organic matter and soil texture into Ks. Especially when the soil is heterogeneous, these PTFs may exhibit large differences between the matrix-predicted and in situ measured Ks. Moreover, there is no published PTF to predict Ks in stony soils. In this study, the objective is to estimate Ks in heterogeneous stony soils by combining already published PTFs. A methodology has been developed to evaluate the performance of the combinations of ten published PTFs predicting Ks from bulk density in fine soil matrix (BD
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