The aim of this study was to assess the performance of Robinia pseudoacacia (black locust tree) to accumulation some of heavy metals and compared with the concentration of these metals in falling dust Yazd highway green belt. In order to an experiment was conducted as factorial based on completely randomized design with four replications. The results showed that the concentration of, iron, manganese, zinc, lead and cadmium metals in falling dust were the highest to the lowest, respectively. The distance from the highway in the concentration of heavy metals in leaves and bark of the black locust tree showed significant results (P<0.01). Also, the effect of heavy metals in the leaves of this tree was higher than that of bark. Concentrations of manganese, cobalt, nickel and cadmium metals increased with increasing distance from the highway due to multi-directional winds and the presence of other contaminants. The Pearson correlation analysis between heavy metals found in the falling dust and Robinia pseudoacacia showed that the input and controlling factors of these metals in the black locust tree are probably the same as the dust. The results showed that the leavesof Robinia pseudoacacia with the amount of metal accumulation index of 4438 mg/kg has more ability to simultaneously absorb different metals. As a result, since this green belt surrounds Yazd urban area, it is hoped that a significant amount of heavy metals will be absorbed by these trees. تفاصيل المقالة

Mohammad Hossein Hakimi Meibody was born in 1963 in Meibod, Yazd province. He gets his diploma in Meibod and then for higher education, he went to Isfahan university and exceeded direction of plant science for 4 years and graduated in 1989 with excellent grade. Then, he went to Tehran university and passed course of Plant Systematic in Biology department of faculty of science since 1996 with excellent grade in this year ‌(1996) he accepted as faculty member of Natural Recourse of Yazd university. He trained many students at yazd university since 2003. Then he gets a scholarship from ministry of science research and technology in 2003 and went to Puna university of India and completed his higher education in Mycology up to PhD degree.In coming back to Iran, he selected as chairman of Natural Recourse faculty of Ardakan city in 2004. Then he printed some bulletins and 3 book about Range Plants and many research program presented by him in period of 2004 to 2017. He supervised many Msc students and also published 30 articles in scientific journal. He loved nature and many of his times spent visiting and sampling of range plants with complete herbarium of natural recourse faculty of Yazd and Ardakan university. he was died on December 2017 and it was very suddenly for all of his colleagues and also for hid students. تفاصيل المقالة