Articles | Volume 21, issue 6
Hydrol. Earth Syst. Sci., 21, 2725–2737, 2017
Hydrol. Earth Syst. Sci., 21, 2725–2737, 2017

Research article 09 Jun 2017

Research article | 09 Jun 2017

Saturated hydraulic conductivity model computed from bimodal water retention curves for a range of New Zealand soils

Joseph Alexander Paul Pollacco et al.

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Cited articles

Anderson, J. L. and Bouma, J.: Relationships between saturated hydraulic conductivity and morphometric data of an argillic horizon, Soil Sci. Soc. Am. J., 37, 408–413,, 1973.
Arya, L. M. and Paris, J. F.: A physicoempirical model to predict the soil moisture characteristic from particle-size distribution and bulk density data, Soil Sci. Soc. Am. J., 45, 1023–1030,, 1981.
Balland, V. and Pollacco, J. A. P.: Modeling soil hydraulic properties for a wide range of soil conditions, Ecol. Model., 219, 300–316, 2008.
Borgesen, C. D., Jacobsen, O. H., Hansen, S., and Schaap, M. G.: Soil hydraulic properties near saturation, an improved conductivity model, J. Hydrol., 324, 40–50,, 2006.
Brooks, R. H. and Corey, A. T.: Hydraulic properties of porous media, Hydrol. Pap., 3, 1964.
Short summary
Descriptions of soil hydraulic properties, such as soil moisture release curve, θ(h), and saturated hydraulic conductivities, Ks, are a prerequisite for hydrological models. Because it is usually more difficult to describe Ks than θ(h) from pedotransfer functions, we developed a physical unimodal model to compute Ks solely from hydraulic parameters derived from the Kosugi θ(h). We further adaptations to this model to adapt it to dual-porosity structural soils.