Have a personal or library account? Click to login
Comparison of alternative soil particle-size distribution models and their correlation with soil physical attributes Cover

Comparison of alternative soil particle-size distribution models and their correlation with soil physical attributes

Open Access
|Mar 2019

Abstract

Complete descriptions of the particle-size distribution (PSD) curve should provide more information about various soil properties as opposed to only the textural composition (sand, silt and clay (SSC) fractions). We evaluated the performance of 19 models describing PSD data of soils using a range of efficiency criteria. While different criteria produced different rankings of the models, six of the 19 models consistently performed the best. Mean errors of the six models were found to depend on the particle diameter, with larger error percentages occurring in the smaller size range. Neither SSC nor the geometric mean diameter and its standard deviation correlated significantly with the saturated hydraulic conductivity (Kfs); however, the parameters of several PSD models showed significant correlation with Kfs. Porosity, mean weight diameter of the aggregates, and bulk density also showed significant correlations with PSD model parameters. Results of this study are promising for developing more accurate pedotransfer functions.

DOI: https://doi.org/10.2478/johh-2018-0009 | Journal eISSN: 1338-4333 | Journal ISSN: 0042-790X
Language: English
Page range: 179 - 190
Submitted on: Jun 28, 2017
Accepted on: Oct 19, 2017
Published on: Mar 28, 2019
Published by: Slovak Academy of Sciences, Institute of Hydrology; Institute of Hydrodynamics, Czech Academy of Sciences, Prague
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2019 Fatemeh Afrasiabi, Habib Khodaverdiloo, Farrokh Asadzadeh, Martinus Th. van Genuchten, published by Slovak Academy of Sciences, Institute of Hydrology; Institute of Hydrodynamics, Czech Academy of Sciences, Prague
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.