Autor(es):
Ribeiro, A.C. 
Data: 2010
Identificador Persistente: http://hdl.handle.net/10198/7158
Origem: Biblioteca Digital do IPB
Detalhes do Documento
Evaluation of pedotransfer functions for predicting soil water retention in por...
Descrição
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.
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.
Tipo de Documento
Documento de conferência
Idioma Inglês
Idioma Inglês
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