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A one-parameter model for the soil water characteristic

By: Gregson, K.
Contributor(s): Hector, D.J [coaut.] | McGowan, M [coaut.].
Material type: materialTypeLabelArticlePublisher: 1987Subject(s): Measurement | Models | Soil chemicophysical properties AGROVOC | Soil water content | Soil water potential | Statistical analysis In: Journal of Soil Science v. 38, no. 3, p. 483-486617548Summary: The two parameter model lnpsiliterature as providing a good fit to the soil moisture characteristic for a wide variety of soil types. This model is examined and it is shown that the parameters a and b are not independent, and hence that the SMC may be represented by a one-parameter model with little loss of accuracy. Thus it is possible to define the SMC from one paired measurement of soil water content against potential. Because this single paired measurement is all that is required it also avoids the necessity of classification of the soil type - indeed it may provide an additional means of soil identification.Collection: Reprints Collection
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Article CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

Reprints Collection REP-4215 (Browse shelf) 1 Available 617548
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Tables, graphs, references p. 486

The two parameter model lnpsiliterature as providing a good fit to the soil moisture characteristic for a wide variety of soil types. This model is examined and it is shown that the parameters a and b are not independent, and hence that the SMC may be represented by a one-parameter model with little loss of accuracy. Thus it is possible to define the SMC from one paired measurement of soil water content against potential. Because this single paired measurement is all that is required it also avoids the necessity of classification of the soil type - indeed it may provide an additional means of soil identification.

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