Soil physiochemical properties of Tamarix ...

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1- MSc. student, Department of Forest Sciences, Faculty of Agriculture, University of Ilam, Ilam, Iran. 2- Assistant Professor, Department of Forest Sciences, ...
Soil physiochemical properties of Tamarix ramosissima in different sites of Ilam province Maryam Mohammadi1, Javad Mirzaei2*, Mostafa Moradi3 and Hamid Reza Naji4 1- MSc. student, Department of Forest Sciences, Faculty of Agriculture, University of Ilam, Ilam, Iran. 2- Assistant Professor, Department of Forest Sciences, Faculty of Agriculture, University of Ilam, Ilam, Iran. 3-Assistant Professor, Department of forestry, Faculty of Natural Resources and Environment, Behbahan Khatam Al-Anbia University of Technology. 4- Assistant Professor, Department of forest sciences, Faculty of Agriculture, University of Ilam, Ilam, Iran.

Abstract This research was done to evaluate the site demands of Tamarix romosissima in Ilam province, Iran. To this, different sites including: Zoheiri, Dar balut, Cham jangal, Pol saymereh, Banrooshan, Golan and Konjancham were selected. T. romosissima was a dominan species in the all sites. In each site, five soil samples were randomly taken from the depth of 0-30 cm and soil physiochemical properties like soil pH, electrical conductivity, organic carbon, total nitrogen, phosphorus, potassium, texture, moisture, bulk density, and particle density were determined. The results indicated that T. romosissima could tolerate 0.92 up to 9.03 ds/m salinity. Furthermore, soil pH, organic carbon, total nitrogen, phosphorus, potassium, and moisture ranged from 6.98-7.99, 0.09-3.33 %, 0-0.29 %, 17.17-23.14, 2.35-402.35 and 0.06-30.56 %, respectively. Statistical analysis revealed that sand, silt, clay, moisture content, electrical conductivity, pH, phosphorus, potassium, total nitrogen, and organic carbon were significantly different in the sites. The principal component analysis and TWINSPAN were used to determine the most important environmental parameters in T. romosissima establishment and distribution. These results revealed that distance from river, organic carbon, electrical conductivity, soil moisture, phosphorus and silt were among the most important factors affecting T. romosissima establishment and distribution. Key words: Principle Component Analysis, Environmental factors, Tamarix ramosissima, Saline regions

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