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A comparative assessment of the estimates of the saturated hydraulic conductivity of two anthropogenic soils and their impact on hydrological model simulations

Author

Listed:
  • Mouna Feki

    (Department of Civil and Environmental Engineering (D.I.C.A.), Politecnico di Milano, Milano, Italy)

  • Giovanni Ravazzani

    (Department of Civil and Environmental Engineering (D.I.C.A.), Politecnico di Milano, Milano, Italy)

  • Stefano Barontini

    (Dipartimento di Ingegneria Civile, Architettura, Territorio, Ambiente e di Matematica, Università degli Studi di Brescia, Brescia (BS), Italy)

  • Alessandro Ceppi

    (Department of Civil and Environmental Engineering (D.I.C.A.), Politecnico di Milano, Milano, Italy)

  • Marco Mancini

    (Department of Civil and Environmental Engineering (D.I.C.A.), Politecnico di Milano, Milano, Italy)

Abstract

In this study, different methods were compared in order to determine the soil hydraulic conductivity at the saturation (Ks) of two heavily anthropized soils in northern Italy: an irrigated field and a landfill cover. In situ, laboratory measurements (falling head and evaporation method) and pedotransfer functions (ROSETTA and HYPRES) were used for the Ks estimation. In accordance with scientific literature, the results have shown that Ks is largely dependent on the type of technique used in taking the measurements. The ROSETTA and HYPRES pedotransfer functions show quite similar performances, while their easiness and convenient use make them potential alternative techniques for the Ks estimation in comparison with the in situ and laboratory measurements. The Ks estimate is sensitive to the selected method and this sensitivity affects the hydrological model simulations. Therefore, none of the tested methods can be considered as a benchmark, but the results found in this study confirm that the applied method for the determination of Ks, may provide a first estimate of Ks to be subsequently optimised after the simulations.

Suggested Citation

  • Mouna Feki & Giovanni Ravazzani & Stefano Barontini & Alessandro Ceppi & Marco Mancini, 2020. "A comparative assessment of the estimates of the saturated hydraulic conductivity of two anthropogenic soils and their impact on hydrological model simulations," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 15(3), pages 135-147.
    • Handle: RePEc:caa:jnlswr:v:15:y:2020:i:3:id:33-2019-swr
    DOI: 10.17221/33/2019-SWR
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