The necessity and urgency of remediating soil polluted with heavy metals have been recognized both politically and socially at the global level. Phytoremediation is a sustainable technology to remove or stabilize heavy metals in soil at former mine sites. The aim of this study was to clarify the ability of the tree species Koelreuteria bipinnata to phytoremediate heavy metal (Mn, Zn, Pb, and Cd)-contaminated soils. Concentrations of the four heavy metals were measured in soils from an un-remediated plot and from three K. bipinnata stands of different ages at the former Xiangtan manganese (Mn) ...
