摘要
[目的]确定吸收各种重金属的植物种类,建立人工湿地生态系统。[方法]以潼关县废弃金矿周围土壤为研究对象,测定土壤受重金属污染的种类、程度。[结果]不同距离不同深度的土壤样品中As、Hg、Cd等3种重金属含量均超过国家土壤重金属含量的最高限值;重金属Pb在土壤表层中的含量较高,而在深层土壤中含量较低;金属元素Zn和Cr的含量均在国家土壤重金属含量的允许范围内;在不同距离不同深度的土壤样品中均检测到放射性元素Rb,其含量在78～88 mg/kg波动。[结论]在进行矿区的植物修复时,As、Hg、Cd是需要重点考虑的重金属元素,主要考虑土壤表层Pb的吸收,不需要重点考虑Zn、Cr。
[ Objective ] The research aimed to determine the plant species that could absorb all sorts of heavy metal and establish the man-made wetland ecosystem. [ Method]The soil of abandoned gold mine around Tongguan County was chosen as the research object,and the type and tbdegree of the heavy metal in polluted soil were determined. [ Result] For the soil samples with different distance and different depth,the content of heavy metal As Hg, Cd were more than the highest value of content standard of the heavy metal in the soil. The content of the heavy metal Pb in the surface soil was higher, and lower in deep soil. Metal dements of Zn and Cr were within the permitted content of the heavy metal in the soil. The radioactive elements Rb in the soil samples with different distance and different depth was detected, whose content was 78 -88 mg/kg. [ Conclusion] The heavy metal element must be considered for the ecological restoration in mining area. The absorption of Pb in surface soil should be mainly focused on. The inftuence of Zn＇ and Cr could be nel^lected.
出处
《安徽农业科学》
CAS
2012年第2期825-827,共3页
Journal of Anhui Agricultural Sciences
基金
陕西省教育厅项目(11JK0763)
渭南师范学院科研基金资助项目(10YKS002)
关键词
重金属
植物修复
矿区
Heavy metals
Phytoremediation
Mine
