بررسی تاثیر برخی خصوصیات خاک بر استقرار گونه گز در سدهای باطله کارخانه فرآوری سنگ آهن در بافق

Understanding the relationship between vegetation and soil is one of the most important parameters to determine the proper location for reclamation and management of natural resource and ecosystem. To learn about the effect of soil properties on distribution of Tamarix ramossisima established in dams filled with wastes of processing factory in Iran Central Iron Ore Company of Bafgh, the information about the vegetation cover and plant density in three dams filled with wastes were collected after fulfilling the dehydrating. After drilling ۱۲ profiles (۴ profiles per dam) accidentally, distribution of soil grain (clay, silt, and sand) namely, organic carbon, lime, gypsum, pH, EC, Ca, Mg, Na, K, P, No۳, SAR, and total N were determined in the laboratory. The result of Kruskal Wallis Test demonstrated that three dams have significant differences at the first depth for No۳, Mg, Na, SAR, and EC and at the second depth for lime, Mg, Na, K, SAR, and EC. Principal components analysis (PCA) on ۳۲ variables indicated that the first axis included EC at the second depth, No۳ at the first and second depths, P at the second depth, sand and silt at the second depth, clay at the first depth, SAR at the second depth, gypsum at the first depth, Ca, Na, Mg, K at the second depth explain ۵۶.۶% of the variations and the second axis included EC at the first depth, P at the first depth, lime at the second depth, organic carbon at the first depth, total N at the second depth, silt at the first depth, clay at the second depth, and Ca, Mg, and K at the first depth explain ۴۳.۳% of the variations. The results show that more availability of calcium, silt, and organic carbon at the first depth and total N, lime at the second depth caused more establishment of Tamarix ramossisima. In addition, more availability of EC, P, Mg, and K at the first depth and clay at the second depth caused poor establishment of Tamarix ramossisima in waste dam of production plants.