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Evaluation of pedotransfer functions for predicting soil water retention in portuguese soils
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Estimates of soil water retention characteristics using pedotransfer functions (PTFs) are useful in many studies, such as hydrological modelling and soil
mapping. Also reliable information about soil hydraulic properties like water retention characteristic and conductivity functions often constitutes an essential
precondition to adequately apply protection and remediation techniques to soil related problems in forest ecology.
The determination of the parameters for these functions can be obtained from direct laboratory and field measurements. However, these measurements are
time consuming which makes it costly to characterize an extensive area of a land. As an alternative, the existing databases of measured soil hydraulic data
may be used to obtained hydraulic parameters by fitting the water retention functions or to develop PTFs from easily measured properties, such as texture, bulk
density and soil organic matter content. Pedotransfer functions (PTFs) are being applied worldwide in global climate modelling exercises, regardless of their
textural and regional validity. The objective was to evaluate four published PTFs (Rawls – Brakensiek, Vereecken, Mayr – Jarvis e Campbell) to estimate the
parameters of soil water retention functions for Portuguese soils.
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Ribeiro, A.C. (2010). Evaluation of pedotransfer functions for predicting soil water retention in portuguese soils. In Azevedo, João; Feliciano, Manuel; Castro, José; Pinto, Maria Alice (Eds.) IUFRO Landscape Ecology Working Group International Conference: Forest Landscapes and Global Change ‐ New Frontiers in Management, Conservation and Restoration. Bragança: IPB, IUFRO