【作者】 郝春明；

【导师】 何绪文；

【作者基本信息】 中国矿业大学（北京） ， 环境工程， 2010， 博士

【摘要】 利用质量平衡理论评估浙江平湖农田土壤重金属污染状况,并利用成壤时间序列,分析了近1000年来滨海农田土壤重金属元素演化规律。研究结论为该地区农田土壤明显受到了人为污染,除了5.6%的农田土壤受到了元素Hg中度人为污染外,其余均为轻微人为污染。重金属元素质量变化才是判断污染的标准,因为元素含量高并不一定是人为作用影响,也可能为自然风化的结果。近1000年成壤过程中,重金属元素Hg率先受到人为活动干扰,其质量逐渐增大；自然演化下元素Cd含量值越来越低,而其余重金属元素含量值越来越高。更多还原

【Abstract】 Using mass balance theory, heavy metal elements pollution in farmland soil was evaluated. At the same time, heavy metal elements concentration evolution rules were analysised based on nearly 1000 years soil evolution time. The research results were that the farmland soil was artificially polluted.Expect 5.6 percent was moderately polluted by Hg, the others were slightly artificially polluted. Bacause heavy metal elements concentration was controlled by human action and natural weathering.process, its quality was the only polluted standards to discriminate. Heavy metal element Hg was firstly influenced by human action, its quality was higher and higher; Except for Cd concentration varied lower and lower, others heavy metal element concentration would become higher and higher under natural evolution.更多还原