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Evaluation of Pedotransfer Functions for Predicting the Soil Moisture Retention Curve

Wim M. Cornelisa, Jan Ronsynb, Marc Van Meirvennea and Roger Hartmanna

a Ghent University, Dep. Soil Management and Soil Care, Coupure links 653, B-9000 Gent, Belgium
b Belgian Nuclear Research Centre, Boeretang 200, B-2400 Mol, Belgium



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Fig. 1. Clay (0–2 µm), silt (2–50 µm), and sand (50–2000 µm) content of the evaluation data set

 


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Fig. 2. Measured, fitted, and predicted moisture retention curves (MRCs) of a sandy loam soil

 


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Fig. 3. Measured vs. predicted soil moisture contents at matric potentials {psi} of -0.3, -3, and -10 kPa

 


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Fig. 4. Measured vs. predicted soil moisture contents at matric potentials {psi} of -31, -98, and -1500 kPa

 


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Fig. 5. Root of mean squared difference (RMSD) as a function of (a) organic matter content and (b) bulk density for the Vereecken et al. (1989) pedotransfer function

 





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