采用富集因子法评价了浙江慈溪地区不同成土时间表层土壤元素Hg的污染程度.结果表明,该地区成土过程中土壤重金属元素Hg污染程度一直增加,其中:成土前200年元素Hg污染程度缓慢增加,随后急剧上升,近1 000年时污染程度最高;表层土壤元素Hg质量是自然积累和人为污染叠加的结果,近1 000年表层土壤元素Hg人为污染量最多,约占Hg其总质量的83%.%The pollution degree of Hg in different age surface soil in Cixi City of Zhejiang Province was evaluated by enrichment factor method. The results showed that soil Hg pollution degree in this area was always increased in soil forming process, Hg pollution degree increased slowly in previous 200 years of soil forming process, and steep increased subsequently, Hg pollution degree reached the highest in recent 1 000 years. Hg mass in surface soil was the superimposed result of natural accumulation and artificial pollution, and the artificial pollution amount of Hg in surface soil was the most in recent 1 000 years, being 83% of total mass of Hg in surface soil.
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