TY - JOUR
T1 - Erodibility of waste (Loess) soils from construction sites under water and wind erosional forces
AU - Tanner, Smadar
AU - Katra, Itzhak
AU - Argaman, Eli
AU - Ben-Hur, Meni
N1 - Funding Information:
The study was supported by the Israeli Ministry of Agriculture and Rural Development (grant no. 44-01-0003 ). We thank Haim Tenaw and Din Danino for their assistance with the rainfall simulations and laboratory soil analyses, Nitzan Swet and Nadav Hanegbi for their assistance with the wind simulations, Noam Younger for soil collection and preparation for the experiments, Jenny Sayegh for her assistance with the slaking tests, and Ehud Roitman, the site engineer of the road 31 widening project, for his collaboration and assistance in supplying the soil samples used in this study.
Publisher Copyright:
© 2017 Elsevier B.V.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2018/3/1
Y1 - 2018/3/1
N2 - Excess soils from construction sites (waste soils) become a problem when exposed to soil erosion by water or wind. Understanding waste soil erodibility can contribute to its proper reuse for various surface applications. The general objective of the study was to provide a better understanding of the effects of soil properties on erodibility of waste soils excavated from various depths in a semiarid region under rainfall and wind erosive forces. Soil samples excavated from the topsoil (0–0.3 m) and subsoil layers (0.3–0.9 and > 1 m depths) were subjected to simulated rainfall and wind. Under rainfall erosive forces, the subsoils were more erodible than the topsoil, in contrast to the results obtained under wind erosive forces. Exchangeable sodium percentage was the main factor controlling soil erodibility (Ki) under rainfall, and a significant logarithmic regression line was found between these two parameters. In addition, a significant, linear regression was found between Ki and slaking values for the studied soil samples, suggesting that the former can be predicted from the latter. Soil erodibility under wind erosion force was controlled mainly by the dry aggregate characteristics (mean weight diameter and aggregate density): their higher values in the subsoil layers resulted in lower soil erodibility compared to the topsoil.
AB - Excess soils from construction sites (waste soils) become a problem when exposed to soil erosion by water or wind. Understanding waste soil erodibility can contribute to its proper reuse for various surface applications. The general objective of the study was to provide a better understanding of the effects of soil properties on erodibility of waste soils excavated from various depths in a semiarid region under rainfall and wind erosive forces. Soil samples excavated from the topsoil (0–0.3 m) and subsoil layers (0.3–0.9 and > 1 m depths) were subjected to simulated rainfall and wind. Under rainfall erosive forces, the subsoils were more erodible than the topsoil, in contrast to the results obtained under wind erosive forces. Exchangeable sodium percentage was the main factor controlling soil erodibility (Ki) under rainfall, and a significant logarithmic regression line was found between these two parameters. In addition, a significant, linear regression was found between Ki and slaking values for the studied soil samples, suggesting that the former can be predicted from the latter. Soil erodibility under wind erosion force was controlled mainly by the dry aggregate characteristics (mean weight diameter and aggregate density): their higher values in the subsoil layers resulted in lower soil erodibility compared to the topsoil.
KW - Aggregate density
KW - Aggregate stability
KW - Dust emission
KW - Exchangeable sodium percentage
KW - Slaking value
KW - Soil erodibility factor
UR - http://www.scopus.com/inward/record.url?scp=85031818691&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2017.10.161
DO - 10.1016/j.scitotenv.2017.10.161
M3 - Article
AN - SCOPUS:85031818691
VL - 616-617
SP - 1524
EP - 1532
JO - Science of the Total Environment
JF - Science of the Total Environment
SN - 0048-9697
ER -