摘要
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。
The changes of heavy metal status in soil under intensive economical development were studied in Wuxian County of southern Jiangsu.The total content of Cu as well as Pb exceeds the background values determined in the earlier 1980s while that of Zn remains around this value.The available forms of these elements have increased to levels of plenty supply or in excess,and the contents of their available forms are higher under industrial impacts than under agricultural.The ratio of HCl extracted form to total,called activity index of heavy metals in soil environment,for these elements is shown to be as high as 35%,and is significantly higher under industrial impact than under agricultural.Pb could be also a sensitive indicator for tracing environmental stress on soil environment caused by intensive economical development in the time scale of 2～3 decades.
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
2000年第1期51-55,共5页
Resources and Environment in the Yangtze Basin
基金
教育部优秀年轻教师基金
江苏省青年科技基金
国家自然科学基金!重点项目 4 983 10 70
关键词
环境变化
重金属
吴县
土壤监测
soil environment
heavy metal
intensive economical development
