scholarly journals Pedotransfer functions for converting laser diffraction particle-size data to conventional values

2017 ◽  
Vol 68 (5) ◽  
pp. 769-782 ◽  
Author(s):  
A. Makó ◽  
G. Tóth ◽  
M. Weynants ◽  
K. Rajkai ◽  
T. Hermann ◽  
...  
Keyword(s):  
Particle Size ◽  
Laser Diffraction ◽  
Pedotransfer Functions ◽  
Particle Size Data ◽  
Size Data

The Australian soil texture boomerang: a comparison of the Australian and USDA/FAO soil particle-size classification systems

Soil Research ◽  
2001 ◽  
Vol 39 (6) ◽  
pp. 1443 ◽  
Author(s):  
Budiman Minasny ◽  
Alex. B. McBratney
Keyword(s):  
Particle Size ◽  
International System ◽  
Classification Systems ◽  
Pedotransfer Functions ◽  
Particle Size Fractions ◽  
Particle Size Data ◽  
Size Limits ◽  
Australian Soil ◽  
Size Data

The different classification of particle-size fractions used in Australia compared with other countries presents a problem for the immediate adoption of the exotic pedotransfer functions. Australia adopted the international system which defined silt as particles with diameters in the range 2–20 m, while the USDA/FAO define it as 2–50 m. We present empirical equations to convert between the two systems. The USDA/FAO textural classes were also plotted in the International system’s coordinate. The USDA/FAO classes in the International system had a ‘boomerang’ shape and only occupy 60% of the triangle. Particle-size data showed that the data are evenly distributed in the USDA/FAO triangle, while most data are concentrated in the boomerang in the International system. We therefore suggest that it would seem wise for most countries to consider adopting the particle-size limits and texture classes of the USDA/FAO system.

scholarly journals Estimation of spatial covariance of log conductivity from particle size data

2014 ◽  
Vol 50 (6) ◽  
pp. 5298-5308 ◽  
Author(s):  
Monica Riva ◽  
Xavier Sanchez-Vila ◽  
Alberto Guadagnini
Keyword(s):  
Particle Size ◽  
Spatial Covariance ◽  
Particle Size Data ◽  
Size Data

Statistics of Particle Size Data

1992 ◽  
Vol 41 (1) ◽  
pp. 127 ◽  
Author(s):  
N. R. J. Fieller ◽  
E. C. Flenley ◽  
W. Olbricht
Keyword(s):  
Particle Size ◽  
Particle Size Data ◽  
Size Data

scholarly journals Particle Size Distribution of Natural Clayey Soils: A Discussion on the Use of Laser Diffraction Analysis (LDA)

Geosciences ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 55
Author(s):  
Aleksandra Gorączko ◽  
Szymon Topoliński
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Diffraction Analysis ◽  
Size Distribution ◽  
Clay Fraction ◽  
Laser Diffraction ◽  
Pedotransfer Functions ◽  
Clayey Soils ◽  
Selection Of

Particle size distribution is one of the most significant factors determining physical soil properties. Laser diffraction analysis (LDA) is an alternative method to the traditional hydrometric methods (HM) used to determine particle size distribution in soils. However, significant differences in fraction content are found in relation to the applied methods of a particle size test. Above all, measurements performed by LDA for clayey soils usually produce different results to those based on Stokes’ equation. Methodical problems, such as an appropriate method of dispersing the sample and the selection of LDA calculation theory, also play a significant role in fine soils. This paper contains the results of analyses of Neogene clays from Poland, which are characterized by differentiation with regard to the content of clay fraction particles. In this article, the validity of using laser diffraction analysis (LDA) for the identification and characterization of clayey sediments with common genesis is assessed. The possibility of finding reliable pedotransfer functions to the convert LDA results to a hydrometric analysis is discussed.

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