干旱区生态环境知识资源中心

This paper studied the transformation of copper fractions in rhizosphere and non-rhizosphere soils of Festuca arundinacea and Trifolium repens in deserted land of copper tailings. The results showed that the proportion of organic-bound or exchangeable contents to the total contents of copper in rhizosphere increased by 9.81 and 10.42%, while the contents of carbonate-bound or Fe-Mn oxides-bound decreased by 2.96 and 1.82%, respectively. The growth and absorption of F. arundinacea and T. repens accelerated the transformation of copper fractions in rhizosphere soils. The effect of root system of T. repens was prominently greater than that of F. arundinacea.