Effects of Haloxylon aphyllum Planting on Soil Physico-Chemical Properties Abardej Region of Varamin

The research was carried out to find the effects of Haloxylon aphyllum plantation on soil properties in Abardej region of Varamin located in Tehran province. For this purpose, field survey was performed in planted site with saxaul and adjacent control site (without vegetation). Soil sampling was done based on randomized-systematic method. Three linear transects with a distance of 100 m from each other were considered and soil samples were taken from 0-20 and 20-80 cm depths along the transects crossing H. aphyllum individuals. Five H. aphyllum individuals were determined along each transect, so that a total number of 30 samples were gathered from the planted site. Also, 30 samples were taken from the control site. Soil texture, pH, EC, lime, gypsum, organic matter, K, Na, Ca, Mg, Cl and HCO3 were determined at the laboratory. T test was used to analyze the data and the results showed that although Haloxylon planting has had some effects on soil characteristics but appropirate management in establishment period of the mentioned plant could be resulted in positive changes in the soil. Subsequently, H. aphyllum will act as a pioneer plant in desert regions to provide better condition for presence of some other suitable plants.