List of Articles مواد مادری

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  1 - Influence of Heredity and Soil Forming Processes on the Distribution of Heavy Elements and Physical, Chemical Soil Properties
  Ali Afshari kamran moravej Parisa Alamdari
  10.22034/jest.2017.17667.2637
  Abstract Background and Objective: This research aimed to evaluate the physical and chemical properties and distribution of heavy metals in soils with different parent materials in the central part of Zanjan province. Method: In this study, 15 developed soil profiles More

  Abstract Background and Objective: This research aimed to evaluate the physical and chemical properties and distribution of heavy metals in soils with different parent materials in the central part of Zanjan province. Method: In this study, 15 developed soil profiles were excavated on Granite, Basalt, Andesite, Porphyrite, Volcanic tuff Limeston, Conglomerates, Shale, Phyllites, Sandstone, Dolomite and Alluvium parent materials. Then, Pedons were described according to the USDA Soil Conservation Services instruction and diagnostic horizons and their classification were conducted up to the great group category, in accordance with soil taxonomy (2014). Soils were classified in Mollisols, Inceptisols and Entisols orders. All of the genetic horizons of pedons and their bedrock (apart from alluvial deposits) were sampled. Also, whole of the laboratory analysis related to the physicaochemical properties of heavy elements was conducted by conventional and standard methods. Findings: The amount of CaCO3 (49.3%) and pH (0.8) in Calcareous soil, organic matter (1.6%), cation exchange capacity (26 cmol(+)kg soil-1), clay (24.4%) and silt (61.9%) was maximized in soils with Andesite, Porphyrite, Tuff and Dolomite parent materials, respectively. The average of nickel, lead and cadmium were the highest value (56, 74.1 and 0.23 mg/kg soil, respectively) in dolomite parent materials soils. Chromium and iron showed the highest value (41.3, 34800, 27.5 mg/kg soil, respectively) in soils formed from Shale parent materials. Copper also indicated the highest value (47.2, 130.3 and 28.3 mg/kg soil, respectively) in Porphyrite parent materials soil. Finally, zinc and cobalt were the highest value (47.2, 130.3 and 28.3 mg/kg soil, respectively) in basaltic parent material soils. Discussion and Conclusion: Cluster analysis algorithm was classified the pedogenic A and B soil horizons in three groups: the first group consists of soils formed from Conglomerate-Shale, Shale and Limestone parent materials. Second group includes Porphyrite, Basalt, and Andesite parent materials soils and the third group consists of soils formed from Tuff, Phyllites, and Alluvium parent materials. The results did not change by adding the parent material horizon (C and Cr). So, the amount of major elements in pedogenic soil horizons is largely controlled by soil heredity. Manuscript profile
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  2 - Spatial Distribution Patterns of Heavy Metals (Fe, Mn, Ni, Cr, Co, Pb, Zn, Cu and Cd) in the Central Area of Zanjan
  Ali Afshari Hossein Khademi
  Background and Objectives: Heavy metals are the most important environment pollutants, especially in high-density residential areas. The objective of this study was main purpose of this study was the determination of spatial distribution patterns of heavy metals (includ More

  Background and Objectives: Heavy metals are the most important environment pollutants, especially in high-density residential areas. The objective of this study was main purpose of this study was the determination of spatial distribution patterns of heavy metals (including Fe, Mn, Ni, Cr, Co, Pb, Zn, Cu and Cd) according to ordinary kriging method for the central parts of Zanjan province, Iran.  Methods: In this study the 241 of mixed samples of soil, picked up from 0 till 10 Cm depth based on Random Networking (Area of case study was around 2000 Km2). Inorder to, for investigating of the impacts of bedrocks on the heavy metals, we sampled of eleven bedrocks. We used of Nitric Acid (5N), Atomic Absorption Spectroscopy and ordinal kriging for extraction, detection and finally, preparation of maps, respectively. Findings:The result showed the best models are Spherical models for the spatial distribution of lead, zinc, nickel, cadmium, copper, cobalt, iron and exponential models for chromium and manganese respectively. The map of the spatial distribution of metals showed that the distribution of iron, manganese, nickel, cobalt and chromium depend on geological formations.While it seems the concentrations of Pb, Zn, Cu and Cd were depended domestic and industry areas. Discussion and Conclusion: The highest concentrations of the metals were naturally detected in basalt and shale context with analyzing of bedrocks. Manuscript profile
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  3 - Effects of topography and time sequences on soil genesis with calcareous parent materials under semi-arid conditions of Rajain, Miyaneh
  Naser Nazari
  Genesis, classification and morphological and physico-chemical characteristics of Rajain’s plain soils affected by topography, as a soil forming factor, under semiarid condition of East Azarbayejan province in northwest of Iran with calcareous parent materials wer More

  Genesis, classification and morphological and physico-chemical characteristics of Rajain’s plain soils affected by topography, as a soil forming factor, under semiarid condition of East Azarbayejan province in northwest of Iran with calcareous parent materials were studied. This plain with 42000 ha. is located in 35 th km southeast of Miyaneh in East Azarbayejan province. The soils of the studied area have “Xeric” moisture regime and “Mesic” temperature regime. The average plain elevation is 1290 m above sea level. The mean annual precipitation and temperature are 305.4 mm and 12.9ºC, respectively. Three physiographic units including plateaus, piedmont alluvial plains and river alluvial plains were identified. According to results of field observation and laboratory analysis, it seems that topography and time are the main factors affecting soil formation at the studied area. They caused differences among the soil characteristics in this area. Topographical variation from upper plateaus to lands of riversides and also rate of runoff, amount of water penetration into soil and vertical translocation of salts and materials within the soil profile have affected soil development and genesis. Entisols are observed in river alluvial plains and southern piedmont alluvial plains without distribution of secondary calcium carbonate and any development of profile and only with ochric epipedon. Inceptisols showed B horizon, calcic horizon and cambic horizon which are characteristic of an early stage of soil development. Manuscript profile
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  4 - Study of mineralogical characteristics in a toposequance of the Ragein region's siols in East Azerbaijan
  Naser Nazari
  In this study, mineralogical characteristics of Rajain’s plain soils located in East Azerbaijan province affected by various topography as a soil forming factor under semiarid condition with calcareous parent materials has been studied. The studied area with 42000 More

  In this study, mineralogical characteristics of Rajain’s plain soils located in East Azerbaijan province affected by various topography as a soil forming factor under semiarid condition with calcareous parent materials has been studied. The studied area with 42000 ha is located in 35th km of southeastern of Mianeh. The average plain elevation is 1290 m above mean sea level and the mean annual precipitation and temperature are 305.4 mm and 12.9º C respectively. Three physiographic units including including plateaus, piedmont alluvial plains and river alluvial plains were identified. In each physiographical unit, nine profiles were selected as control. According to the comperhensive soil classification system, USDA and FAO system, soils were classified up to family level. Jackson, Kitric and Hope Methods have been used for clay separation from the soil samples. Also, Mahra and Jackson Method has been used for mortar removing in aggregates including carbonates and gypsum soluble salts. The X-ray curves provided by simens5000 X-ray diffractometer with Fe-filtered copper Ka radiation cupper in 1.524 Ao length wave. the mineralogy was determined by X-ray diffraction with a and. X-ray diffractograms of clay fraction of representative soils showed that similar minerals were present, but differed in relative abundance. The relatively high amount of chlorite reveals that the soils are in young stage of development. Manuscript profile