The concentrations of heavy metals in soils from different riparian wetlands are presented in Table 2. As shown in Table 1 and 2, the concentrations of heavy metals in soils were far higher than those in water and showed enrichment of metals in the riparian soils. The metal concentrations in soils were higher than the thresholds of Class I regulated in the Environmental Quality Standard for Soils in China (EQSS) [33] which was set to represent the natural background levels of soils. Whereas most of metal concentrations were lower than the class II threshold which was set for general agricultural and grazing land and the soil quality pose no harm to the plants and environment. However, the amounts of Cd were significant higher than the values of class II and obvious contaminated in soils.