Through investigation and sampling Carya cathayensis kernels and soil of plantations, the heavy metals, Se, organic matter and other indicators in soil were analyzed, and the pollution degrees of heavy metals in soil were evaluated with risk screening values as the criteria. The content of heavy metals, Se, Ge and other trace components in kernels was analyzed, and the relationship between soil and kernels was discussed. The results show that the average values of Cu, Pb, Zn, Ni, Cr, Cd, As, Hg and Se in the soil of Carya cathayensis plantations are higher than those of the average soil of China, especially Cd is 5.6 times that of the average soil of China. Local soil Cd and As in the study area have reached the pollution level while the ecological risk of other heavy metals is slight. Carya cathayensis kernels have low Cd, Hg, Pb, As and other heavy metals content, no excessive heavy metal elements, low ecological risk, and high zinc content, with the potential to develop zinc-rich health food. Carya cathayensis has a significant difference in the absorption capacity of different heavy metals. The absorption capacity of zinc and copper is much greater than that of Cd, Cr and Hg.
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