Results 131 to 140 of about 646 (180)
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Development of pedotransfer functions in soil hydrology
Geoderma, 2006Developments in Soil Science Vol. 30. Edited by Ya. Pachepsky and W.J. Rawls. Elsevier, Amsterdam, Boston, 2004. 512 p. $196. ISBN 0‐444‐51705‐7. Hardcover. ISSN 0166‐2481 (series).
M. K. Shukla, T. W. Sammis
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Pedotransfer Functions for Brazilian Soils
2014The growing need for PTFs frequently leads to the use of inadequate PTFs and databases, especially when dealing with data from different regions or climates, such as in tropical and temperate climate zones. Most PTFs have been developed for soils from temperate climates, which tend to be very different from tropical soils.
Alexandre Hugo Cezar Barros +1 more
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Pedotransfer functions for tropical soils
2004Publisher Summary This chapter compares the performance of well-documented pedotransfer functions (PTFs) developed in tropical soils. The performance is examined in terms of their accuracy, reliability, and utility. The potential effects of bulk density, the selection of independent variables, and the methodology used for deriving the PTFs on their ...
J. Tomasella, M. Hodnett
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Evaluating pedotransfer functions of the Splintex model
European Journal of Soil Science, 2018The soil water retention curve (SWRC) is an essential hydraulic function for the understanding and modelling of soil hydraulic processes. Its direct determination is time consuming and sometimes expensive because it requires extensive sampling, especially when spatial and temporal variation of soil hydraulic ...
A. M. Huf Dos Reis +3 more
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Pedotransfer Functions and Soil Inference Systems
Progress in Soil Science, 2018The term pedotransfer function (PTF) was coined by Bouma (1989) as ‘translating data we have into what we need’. Pedotransfer functions are regression functions used to predict soil properties that would be otherwise infeasible to obtain. Typical reasons for this infeasibility include, but are not limited to, the cost, time, difficulty or hazard ...
JOSÉ Padarian +2 more
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Necessary meta-data for pedotransfer functions
Geoderma, 2011Abstract Although pedotransfer functions have been published for more than 25 years, most published functions have very little information on the functions themselves and where they can be used. In this paper, we recommend 3 tables to accompany every published PTF so that users can decide whether they can potentially use a published PTF on their data.
Alex B. McBratney +2 more
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Methods to evaluate pedotransfer functions
2004Publisher Summary This chapter presents procedures that can be used for pedotransfer functions (PTFs) evaluation. Model testing requires that both model inputs and measured data vs. model estimates must be carefully assessed to avoid a blind evaluation that would produce unreliable results.
M. Donatelli +2 more
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Pedotransfer functions for the United States
2004Publisher Summary This chapter presents pedotransfer functions (PTFs) that have been developed from national databases. The PTFs presented are for water retention and saturated hydraulic conductivity. PTFs for water retention take one of two forms: PTFs that predict water retention at specific matric potentials and PTFs that predict the parameters of
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Pedotransfer Functions for Estimating Ammonium Adsorption in Soils
Soil Science Society of America Journal, 2011Urine depositions by grazing animals induce high concentration of ammonium (NH 4 + ) in soils. The adsorption of NH 4 + in the soil plays an important role in the fate of the urine deposited N. However, adsorption
I. Vogeler +4 more
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Pedotransfer functions in soil electrical resistivity estimation
Geoderma, 2011Abstract Surface electrical resistivity tomography (ERT) is recognized as a powerful non-invasive soil survey and monitoring method. Relationships between electrical resistivity (ER) and soil water contents that are needed to infer the spatial distribution of soil moisture from the ERT results, are known to reflect soil properties.
Z.Z. Hadzick +3 more
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