摘要
调查表明三峡库区淹没区土壤重金属含量均达到国家土壤环境标准3级以上,其中Cu含量范围为10.7～80.2mg/kg,均值为37.0 mg/kg;Pb含量范围为14.6～51.8 mg/kg,均值为29.3 mg/kg;Zn含量范围为47.5～93.3 mg/kg,均值为72.7 mg/kg;Cd含量范围为0.081～0.864mg/kg,均值为0.321 mg/kg;Hg含量范围为0.032～0.204mg/kg,均值为0.059 mg/kg;As含量范围为4.63～12.7 mg/kg,均值为8.65 mg/kg.重金属潜在生态危害评价显示三峡库区淹没区土壤重金属潜在生态危害处于轻微状态,主要生态危害元素为Cd.
The contents of soil heavy metals in the water - level - fluctuating zone of the Three - Gorges Reservoir Area were found to be above Grade Three of the National Standard for Soil Environment of China in an investigation. The contents of Cu, Pb, Zn, Cd, Hg and As ranged from 10.7 - 80.2, 14.6 - 51.8, 47.5 - 93.3, 0.081 - 0. 864, 0. 032 - 0. 204 and 4.63 - 12.7 mg/ka, respectively, averaging 37. 0, 29.3, 72.7, 0. 321, 0. 059 and 8.65 mg/kg. Potential ecological risk evaluation showed that the ecological risk is slight and Cd is the main element which serves as a hazard to the ecological environment.
出处
《西南农业大学学报（自然科学版）》
CSCD
北大核心
2005年第4期470-473,共4页
Journal of Southwest Agricultural University
基金
中意合作项目---三峡库区生态环境调查及评价
重庆市环保局资助项目(2000.1)
关键词
三峡库区
重金属
生态危害评价
the Three - Gorges Reservoir Area
soil heavy metal
ecological risk evaluation
