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以江苏省吴县市农地为例,研究了高强度经济开发下土壤环境中重金属元素的变化。结果表明,除Zn接近背景值外,Cu、Pb全量已超过背景值;工业快速发展地区土壤中Pb已显著高于农业环境;它们的有效态含量已达到丰富或过多的供应水平,且工业环境中显著高于农业环境中;重金属元素的活化率显示工业发展对土壤环境重金属元素的强烈污染冲击。这种20～30a尺度的土壤环境变化对水环境及食物安全和环境安全的潜在影响必须引起科学家和决策者的密切注意。
Taking the farmland in Wuxian, Jiangsu Province as an example, the changes of heavy metal elements in soils under intensive economic development were studied. The results showed that the total amount of Cu and Pb exceeded the background value with the exception of Zn approaching the background value. Pb in soils in the fast-developing industrial areas was significantly higher than that in the agricultural environment; their effective content had reached a rich or excessive supply level, and the industrial The environment was significantly higher than the agricultural environment; the activation rate of heavy metal elements showed strong impact of industrial development on heavy metal pollution of soil environment. The potential impact of this 20-30-year-scale changes in soil environment on water environment, food safety and environmental safety must be closely watched by scientists and policymakers.