The potential ecological risk index (RI) and geological acumination index(Igeo), as the quantitative diagnostic tools, were used to evaluate the pollution degree of various heavy metals in the sediments.

• 利用潜在生态风险指数(RI)和地质积累指数(Igeo)两种指标相结合的方法对表层底泥中重金属污染程度进行评价.