The Cumulative Ability Of Acacia Cyanophylla Trees For Some Heavy Metals in Shahat Forest, Libya

Abstract

This experiment was conducted  in the Shahat Forest to evaluate A. Cyanophylla  ability to accumulate heavy metals to absorb them from contaminated soil, with potentially to those heavy metals and rebuild ecosystems. Heavy metals which include (Zn, Fe, Cd & Pb) were measured in A. Cyanophylla tissues (aerial parts,  roots parts) in the soil to a depth of 0-40 cm. Results showed the concentrations of heavy metals did not exceed the permissible limits of World Heath Organization (WHO). And A. Cyanophylla was efficient in pulling and accumulating heavy metals within its tissues where Bio Accumulation Factor (BAF) of  (Zn, Fe, Cd and Pb) was (2.2, 6.7, 2.1 and 1.6) respectively , and Bio Concentration Factor (BCF) of heavy metals was in root parts more than aerial parts at all elements, and Translocation Factor (TF) was less than 1 at all elements too, that mean A. Cyanophylla can be considered as a potential bioaccumulator with phytostabilization strategy .The results of statistical analysis (p <0.05) revealed  significant differences concentrations between the different  parts of plant.