Chemical, physical, mineralogical and micromorphological properties of soils along a toposequence in Chelgerd region, Chaharmahal-vaBakhtiari, Iran
Journal Title: International Journal of Farming and Allied Sciences - Year 2018, Vol 7, Issue 2
Abstract
The optimum use of soil is possible with correct and complete understanding of its properties. The purpose of the present study was to enhance understanding of Vertisols in an area located on 35 km of Chelgerd region in Chaharmahal –va- Bakhtiari province, Iran. Soil temperature and moisture regimes of this region are mesic and xeric, respectively. Eight pedons located on a transect along the northern slope were sampled and described. The results showed that the soils of the area are Inceptisols and Vertisols according to the Taxonomy system, while in WRB system, they are named Cambisols, Calcisols and Vertisols. They are constituted mainly by smectites associated with some amount of illite, chlorite, kaolinite, quartz and illite- smectite as mixed minerals. Study of the thin sections revealed the presence of clay coating in the Btss and Btkss horizons. Also, calcite coating, calcite infilling and calcite accumulation with various forms such as calcite needle and calcite nodule in the Bk, Bkss and Btkss were also observed. The cause is the accumulation of calcite needle in the top of the slope due to highlands area, presence of enough moisture in the soil, the low salinity of soil and presence of biodegradable organic matter.
Authors and Affiliations
Sepideh Etedali, Seyed Ali Abtahi , Mohammad Hasan Salehi 2, Javad Givi , Mohammad Hadi Farpoor, Majid Baghernejad
Keywords
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