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Functional evaluation of pedotransfer functions for the estimation of soil hydraulic properties

Abstract:

Functional evaluations of pedotransfer functions (PTFs) were performed. In a first sample problem, the influence of uncertainty in the PTF was examined on the basis of two functional criteria: the moisture supply capacity (MSC) and the downward flux below the root zone (DFR). In a second sample problem the effect of the uncertainty in the PTFs and the variability in soil properties within a map unit were analyzed. It was found that an improved estimate to the hydraulic properties, obtained by calibrating PTFs using detailed textural information, did not substantially reduce the dispersion of the MSC and DFR distributions. Results from the second sample problem indicated that >90% of the variation in the simulated MSC was caused by estimation errors in the hydraulic properties, overwhelming the map unit variability. -from Authors

Año de publicación:

1992

Keywords:

    Fuente:

    googlegoogle
    scopusscopus

    Tipo de documento:

    Article

    Estado:

    Acceso restringido

    Áreas de conocimiento:

    • Fertilidad del suelo
    • Mecánica de suelos

    Áreas temáticas:

    • Técnicas, equipos y materiales
    • Agricultura y tecnologías afines
    • Ingeniería sanitaria

    Contribuidores:

    Jan Jozef Albert FeyenJan Jozef Albert Feyen
    Bouma J.Bouma J.
    Diels J.Diels J.
    Vereecken H.Vereecken H.
    Van orshoven J.Van orshoven J.