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Solid Earth An interactive open-access journal of the European Geosciences Union

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https://doi.org/10.5194/se-2017-84
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
10 Oct 2017
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Solid Earth (SE).
On soil textural classifications and soil texture-based estimations
Miguel Ángel Martín1, Yakov A. Pachepsky2, Carlos García-Gutiérrez1, and Miguel Reyes1 1Universidad Politécnica de Madrid, Madrid, Spain
2USDA-ARS Environmental Microbial and Food Safety Laboratory
Abstract. The soil texture representation with the standard textural fraction triplet 'sand-silt-clay' is commonly used to estimate soil properties. The objective of this work was to test the hypothesis that other fraction sizes in the triplets may provide better representation of soil texture for estimating some soil parameters. We estimated the cumulative particle size distribution and bulk density from entropy-based representation of the textural triplet with experimental data for 6300 soil samples. Results supported the hypothesis. For example, simulated distributions were not significantly different from the original ones in 25 and 85 % of cases when the 'sand-silt-sand' and 'very coarse+coarse + medium sand – fine +very fine sand – silt+clay', were used, respectively. When the same standard and modified triplets were used to estimate the average bulk density, the coefficients of determination were 0.001 and 0.967, respectively. Overall, the textural triplet selection appears to be application- and data-specific.

Citation: Martín, M. Á., Pachepsky, Y. A., García-Gutiérrez, C., and Reyes, M.: On soil textural classifications and soil texture-based estimations, Solid Earth Discuss., https://doi.org/10.5194/se-2017-84, in review, 2017.
Miguel Ángel Martín et al.
Miguel Ángel Martín et al.
Miguel Ángel Martín et al.

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Short summary
The soil texture representation with the standard textural fraction triplet ’sand-silt-clay’ is commonly used to estimate soil properties. The objective of this work was to test the hypothesis that other fraction sizes in the triplets may provide better representation of soil texture for the reconstruction of the particle-size distribution and for estimating some soil properties with soil texture as a predictor. Results supported the hypothesis.
The soil texture representation with the standard textural fraction triplet ’sand-silt-clay’...
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