AbstractSoybean is one of most important dicotyledonous food crops and is widely planted in Hunan Province, China. However, mining activity causes contamination of the soil in which soybean grows. To assess the impact of mining‐induced soil contamination on soybean plants, a geoaccumulation index (Igeo) was used to evaluate 20 soil samples from the mining and smelting areas of southern Hunan Province. The results indicated that Zn ranged from uncontaminated to a moderately contaminated level (Igeo < 1), Pb was at a strongly contaminated l...