Volume 14, Issue 51 (spring 2010)
jwss 2010, 14(51): 71-86 |
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Nael M, Jalalian1 A, Khademi H, Kalbasi M, Sotohian F, Schulin R. Effect of Geopedological Conditions on Content and Distribution of Selected Major and Trace Elements in Forest Soils of Fuman-Masule Region . jwss 2010; 14 (51) :71-86
URL: http://jstnar.iut.ac.ir/article-1-1210-en.html
URL: http://jstnar.iut.ac.ir/article-1-1210-en.html
, jalalian@cc.iut.ac.ir
Abstract: (29415 Views)
Geologic and pedologic controls are the main factors determining the behavior of elements in natural soil environments. In order to assess the role of these factors on content and distribution of selected major and trace elements in soil, six parent materials including: phyllite, tonalite, periditite, dolerite, shale and limestone were selected in Fuman-Masule region. Soil genesis and development of representive residual pedons were studied for each parent material and the total content of Si, Al, Ca, Mg, Fe, Ti, Mn, Ni, Co, Cr, Cu, Pb, V and Zn were compared among them. Enrichment/depletion patters of trace elements were assessed using Ti as reference element. Generally, Cr, Ni, Co and V are highest in soils derived from peridotite (984, 285, 53 and 204 mg/kg, respectively) and dolerite (1023, 176, 39 and 185 mg/kg, respectively). In the same way, Si and Al exhibit the features of parent materials in the sense that the lowest content was observed in soils developed on peridotite, dolerite and limestone. Zinc and Pb are highest in soils derived from shale (106 and 27 mg/kg, respectively). In a given pedon, different elements exhibited different enrichment/depletion patterns moreover, a given element may behave differently not only in soils with different parent materials but also, in some cases, in soils developed on similar lithology. Lead, Zn, Cu and Mn have been generally enriched in most pedons, except in some acidic and strongly leached soils, whereas Co, Cr, Fe, Ni and V have been leached, especially from Dystrudepts and Eutrudepts. The latter elements, however, showed enrichment trend in Hapludalfs and Argiudolls parallel to the development of illuvial B horizons.
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