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通过整理近10 a来公开发表的有关胶州湾东部沉积物重金属的数据,对数据进行模糊处理,构建基于梯形模糊数的生态风险评价模型。结果表明各重金属的污染程度跨度较大,其中Zn的污染水平跨度最大;就生态风险而言,胶州湾东部除毒性系数较大的Hg和Cd处于低-高风险,海泊河口除Hg和Cd分别处于高-极高风险和高-很高风险外,其余重金属均为低风险;胶州湾东部和海泊河口沉积物重金属综合生态风险分别为为低-高风险和高-极高风险,分别隶属于中等风险和高风险的可能性最大。在进行重金属风险评价时,应重视Hg和Cd的风险。
By sorting out the data about the heavy metals in the sediments of the eastern Jiaozhou Bay in the past 10 years, the data were obfuscated and the ecological risk assessment model based on trapezoidal fuzzy numbers was constructed. The results showed that the pollution degree of each heavy metal spans to a large extent, and the pollution level of Zn has the largest span. In terms of ecological risk, the Hg and Cd with high detoxification coefficient in eastern Jiaozhou Bay are at low-high risk. The heavy metals are all low risk; the comprehensive ecological risk of heavy metals in the sediments of the eastern Jiaozhou Bay and the Haise estuary are low-high risk and high-high risk, respectively Most likely to be at medium and high risk. In the assessment of heavy metal risk, attention should be paid to the risks of Hg and Cd.