Taking the Caragana korshinskii which is the main planted tree species in Jinchuan Tailings Bank as the plant material and local main heavy metal element Ni,Cu as the research object,the study on the heavy metals' contamination of Caragana korshinskii and soil in Jinchuan Tailings Bank indicated that the soil there was not only extremely barren,but had a high content of heavy metals as well,The contents of Ni and Cu in the soil were beyond grade three of national standards for environment quality,and the so...