Pedotransfer functions
Pedotransfer functions to estimate bulk density from soil properties and
... such as the Rio Doce basin in southeastern Brazil, is indirect estimation from less costly covari- ates using pedotransfer functions (PTF). This study primarily aims to develop region-specific PTFs for ρ b ...
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ASSESSMENT OF PEDOTRANSFER FUNCTIONS FOR ESTIMATING SOIL WATER RETENTION CURVES FOR THE AMAZON REGION
... W.G. Pedotransfer functions for the estimation of moisture retention characteristics of Ferralsols and related ...hydraulic functions of unsaturated ...
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PEDOTRANSFER FUNCTIONS FOR WATER RETENTION IN THE MAIN SOILS FROM THE BRAZILIAN COASTAL PLAINS Funções de pedotransferência para retenção de água nos principais solos dos tabuleiros costeiros brasileiros
... Pedotransfer functions (PTFs) are equations used to estimate soil characteristics difficult to determine from other easily obtained ones. Water retention in soil is used in several agronomic and ...
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PEDOTRANSFER FUNCTIONS FOR WATER RETENTION IN DIFFERENT SOIL CLASSES FROM THE CENTER-SOUTHERN RIO GRANDE DO SUL STATE
... Water retention in soil is used in many agronomic and environmental applications, but its direct measurement is time- consuming and expensive. Therefore, pedotransfer functions (PTFs) are alternatives to ...
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REVISITING FIELD CAPACITY (FC): VARIATION OF DEFINITION OF FC AND ITS ESTIMATION FROM PEDOTRANSFER FUNCTIONS
... Taking into account the nature of the hydrological processes involved in in situ measurement of Field Capacity (FC), this study proposes a variation of the definition of FC aiming not only at minimizing the inadequacies ...
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The use of Pedotransfer functions and the estimation of carbon stock in the Central
... Pedotransfer functions (PTFs) are predictive mod- els of certain soil properties using data from soil surveys (Bouma, ...These functions fill the gap between the available soil data and the ...
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ABSTRACT: The aim of this study was to evaluate the performance of pedotransfer functions
... Pedotransfer functions (PTFs) (Bouma, 1989) have been widely used for estimating ρb using soil properties which are easier to measure and are available in most da- ...
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Pedotransfer functions for Irish soils – estimation of bulk density (<i>ρ</i><sub>b</sub>) per horizon type
... However, bulk density has been found to vary with depth (Leonaviˇciut˙e, 2000) and soil type (Manrique and Jones, 1991), while the use of generic pedotransfer functions can result in large errors in the ...
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Functional test of pedotransfer functions to predict water flow and solute transport with the dual-permeability model MACRO
... tion procedures – referred to here as “parameter estimation algorithms” – are generally called “pedotransfer functions” (PTFs) when they concern soil properties. The survey data used to obtain ...
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PEDOTRANSFER FUNCTIONS RELATED TO SPATIAL VARIABILITY OF WATER RETENTION ATTRIBUTES FOR LOWLAND SOILS
... The estimation of non available soil variables through the knowledge of other related measured variables can be achieved through pedotransfer functions (PTF) mainly saving time and reducing cost. Great ...
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Deriving pedotransfer functions for soil quartz fraction in southern France from reverse modeling
... Abstract. The quartz fraction in soils is a key parameter of soil thermal conductivity models. Because it is dif- ficult to measure the quartz fraction in soils, this information is usually unavailable. This source of ...
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PEDOTRANSFER FUNCTIONS TO ESTIMATE RETENTION AND AVAILABILITY OF WATER IN SOILS OF THE STATE OF SANTA CATARINA, BRAZIL
... Studies on water retention and availability are scarce for subtropical or humid temperate climate regions of the southern hemisphere. The aims of this study were to evaluate the relations of the soil physical, chemical, ...
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PEDOTRANSFER FUNCTIONS TO PREDICT WATER RETENTION FOR SOILS OF THE HUMID TROPICS: A REVIEW
... called pedotransfer functions (PTFs) have been widely used by soil scientists in temperate regions in response to the lack of measured soil property ...term pedotransfer function as “translating data ...
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PEDOTRANSFER FUNCTIONS TO ESTIMATE WATER RETENTION PARAMETERS OF SOILS IN NORTHEASTERN BRAZIL
... van den BERG, M.; KLAMT, E.; van REEUWIJK, L.P. & SOMBROEK, W.G. Pedotransfer functions for the estimation of moisture retention characteristics of Ferralsols and related soils. Geoderma, 78:161-180, ...
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Research Note:<br>Determination of soil hydraulic properties using pedotransfer functions in a semi-arid basin, Turkey
... In this study, for a loamy soil, field measurements of volumetric water content with respect to pressure head were obtained from a soil moisture probe with its data log[r] ...
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Funções de pedotransferência de propriedades hídricas do solo para estimar o Índice S
... needed. Pedotransfer functions have been proposed for this purpose and they can be point or parametric when estimating the water retention ...of pedotransfer functions for soil water retention ...
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Braz. J. Geol. vol.45 número2
... alternative, pedotransfer functions (PTFs) are often used to estimate K-values indirectly, based on soil attributes such as texture, morphological structure, organic matter content and density (Bouma & ...
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THE EFFICIENCY OF DIFFERENT ESTIMATION METHODS OF HYDRO-PHYSICAL LIMITS
... The soil water available to crops is defined by specific values of water potential limits. Underlying the estimation of hydro-physical limits, identified as permanent wilting point (PWP) and field capacity (FC), is the ...
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ESTIMATION OF WATER RETENTION AND AVAILABILITY IN SOILS OF RIO GRANDE DO SUL
... Due to the existence of soil variables in the RS soil database with direct and indirect relationships to water retention, it was possible to estimate water retention by pedotransfer functions (Table 4), as ...
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Revista Brasileira de Engenharia Agrícola e Ambiental
... of pedotransfer functions (PTFs) to predict θ for different Ψm values according to other physical attributes, such as the bulk density (BD), total porosity (TP), macroporosity (Ma), microporosity (Mi), and ...
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