Detailed Soil Survey and Land Classification of Mehrgan Research Station in Kermanshah Province.
2008
Fatehi, Shah Rokh | Eftekhari, Kamran | Qaderi, Jalal | Qoli Tabar, Hamid | Muemeni, A`ziz
Geopedologic approach was used for soil resource inventory and soil maping of Mehrgan research station. Study area covers about 200 ha and is located 19km far from north-west of Kermanshah provinencial capital. Climate is humid and cold in winter and moderately hot and dry in summer. Soil moisture and temperature regimes are Xeric and Mesic, respectively. Recognized soils mainly were formed on Quaternery age sediments. Two landscapes, two reliefs and four landforms separated and three soils including Vertisols, Inceptisols and Entisols were distinguished on the identified Geoforms. Parent material, climate, and topography are the main soil forming factors that controls the formation and development of the soils. Entisols were formed on the point bars and levees. Other developed soils including Inceptisols and Vertisols were formed on Upper terrace and low glacis. Soil map unit defined as consociation according to kind of observation and soils distribution. In low glacis, soil texture is heavy and ranges from clay or silty clay to silty clay loam. Their pH varies between7.35- 7.91, EC varies between 0.23-1.87(ds/m), soil OC varies between 0.65- 2.67% and the amount of CaCO3 varies between 10.3-38%. Soil texture is moderate and varies from silty clay loam or clay loam to silt loam and loam toward Razavar riverbed, in the Valey. Soil PH varies from 7.57 to 7.75, soil EC varies from 0.47 to 1.12(ds/m), soil organic carbon vaies from 1.2 to 2.21% the amount of CaCO3 varies between 10.3-38%, too. Statistical analysis showed that Geopedologic approach is a powerfule technique for providing soil maps with good quality.
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