Estimation of the soil water retention curve (SWRC) using pedotransfer functions (PTFs)
2007
Matula, S.,Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Pedologie a Geologie | Mojrova, M.,Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Pedologie a Geologie | Spongrova, K.,Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Pedologie a Geologie
The aim of this study was to estimate soil water retention curve (SWRC) by applying Woesten's continuous pedotransfer functions to 140 SWRC measured in a selected locality in the Czech Republic, Tisice. Soil texture, bulk density and organic matter content were determined at the same time. Our own continuous pedotransfer functions were derived following the methodology used in continuous pedotransfer functions. Two types of fitting, 4-parameters and 3-parameters, were tested. The general equations of Woesten's pedotransfer functions were not very suitable to estimate the SWRC for the locality studied. However, the parameters of the same Woesten's equations which were calculated only from the data for each particular locality performed much better. The estimates can be improved if the value for the saturated soil water content is known, applied and not optimised (the case of the 3-parameter fitting).
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