Vertical Distribution of Heavy Metals in Soil of Ningdong Mining Area
GAO Yu;DU Liang-liang;HAI Long;Land and resources survey and monitoring institute of Ningxia;China University of Geosciences(Beijing);
Ningdong Mining Area is an area of about 3500 square kilometers of coal-rich area, which mainly includes Yuanyang Lake, Lingwu and Hengcheng three mining areas. This study shows that the average soil cadmium content in the soil surface is 0.085 mg/kg. The special external factors and the soil environment, the preliminary study found that it is mainly related to the capillary action of the soil in the area and the surface sedimentation of cadmium in the mining area.