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Ensemble pedotransfer functions to derive hydraulic properties for New Zealand soils

CICHOTA, Rogerio ; VOGELER, Iris ; SNOW, Val O ; WEBB, Trevor H

Soil research (Collingwood, Vic.), 2013-01, Vol.51 (2), p.94-107 [Periódico revisado por pares]

Collingwood: CSIRO Publishing

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Título:
Ensemble pedotransfer functions to derive hydraulic properties for New Zealand soils
Autor: CICHOTA, Rogerio ; VOGELER, Iris ; SNOW, Val O ; WEBB, Trevor H
Assuntos: Agronomy. Soil science and plant productions ; Analysis ; Biological and medical sciences ; Earth sciences ; Earth, ocean, space ; Exact sciences and technology ; Fundamental and applied biological sciences. Psychology ; Hydrogeology ; Physical properties ; Physics, chemistry, biochemistry and biology of agricultural and forest soils ; Soil moisture ; Soil science ; Soils ; Surficial geology ; Toy industry ; Water and solute dynamics
É parte de: Soil research (Collingwood, Vic.), 2013-01, Vol.51 (2), p.94-107
Descrição: Modelling water and solute transport through soil requires the characterisation of the soil hydraulic functions; however, determining these functions based on measurements is time-consuming and costly. Pedotransfer functions (PTFs), which make use of easily measurable soil properties to predict the hydraulic functions, have been proposed as an alternative to measurements. The better known and more widely used PTFs were developed in the USA or Europe, where large datasets exist. No specific PTFs have been published for New Zealand soils. To address this gap, we evaluated a range of published PTFs against an available dataset comprising a range of different soils from New Zealand and selected the best PTFs to construct an ensemble PTF (ePTF). Assessment (and adjustment when required) of published PTFs was done by comparing measurements and estimates of soil water content and the hydraulic conductivity at selected matric suction values. For each point, the best two or three PTFs were chosen to compose the ePTF, with correcting constants if needed. The outputs of the ePTF are the hydraulic properties at selected matric suctions, akin to obtaining measurements, thus allowing the fit of different equations as well as combining any available measurements.
Editor: Collingwood: CSIRO Publishing
Idioma: Inglês

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Ensemble pedotransfer functions to derive hydraulic properties for New Zealand soils

CICHOTA, Rogerio ; VOGELER, Iris ; SNOW, Val O ; WEBB, Trevor H

Collingwood: CSIRO Publishing

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