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Mineralogy and aggregate stability of soils in the arid region of Southeastern Iran


Moghimi, Abolhassan and Jol, Hamdan and Jusop, Shamsuddin and Abd. Wahid, Samsuri and Abtahi, Ali (2012) Mineralogy and aggregate stability of soils in the arid region of Southeastern Iran. African Journal of Agricultural Research, 7 (11). art. no. 79DCD6239243. pp. 1639-1649. ISSN 1991-637X


The stability of arid soils can be affected by their chemical and mineralogical properties. A study was conducted to investigate the influence of soil chemical and mineralogical properties on soil stability indices in the Shamil-Ashkara Catchment area of Iran. Eight soil profiles were dug and all the soils were classified as Entisols. These soils are calcareous in nature with high amounts of basic cations. There was a significant positive correlation between water-stable aggregates (WSA) and organic carbon (OC), exchangeable Ca2+ and kaolinite contents with r-values of 0.70, 0.45, and 0.62, respectively. Soil pH affects stability indices the most as indicated by the highest significant correlation between pH and WDC (r = 0. 87). Among the minerals present, palygorskite significantly influences the WSA (r = -0.46) and WDC (r = 0.68) the most, while chlorite has the least significant effect. The results indicated that the significant positive factors affecting WDC are in the order of: pH > Fe2O3 > CEC > palygorskite > Na+ > SAR > Mg2+ and the positive factors affecting WSA are: OC > kaolinite > Ca2+, respectively.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
DOI Number: https://doi.org/10.5897/AJAR11.750
Publisher: Academic Journals
Keywords: Mineralogical properties; Aggregate stability; Arid region soils; Soil properties
Depositing User: Nur Farahin Ramli
Date Deposited: 08 Nov 2013 02:30
Last Modified: 08 Nov 2017 08:09
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.5897/AJAR11.750
URI: http://psasir.upm.edu.my/id/eprint/23844
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