摘要
将兰州市分为商业区、工业区、文教区、农业区等4大功能区,在各功能区选择采集表层土壤样本共29个,用原子吸收光谱仪分析了Cu,Zn,Pb的全量,用综合污染指数法和聚类分析法对各功能区表层土壤重金属污染进行了评价,初步揭示了兰州市不同功能区Cu,Zn,Pb的污染特征．分析结果表明商业区表土重金属污染最严重;工业区、文教区、农业区污染程度较接近,其污染程度取决于交通运输、工业活动和农业活动;绿化带对重金属污染的影响也相当明显．
The city of Lanzhou was divided into four zones： commercial, industrial, educational and agricultural. The soil samples in each zone were randomly collected and analyzed by AAS. This article has assessed the pollution from heavy metals （Cu, Zn, Pb） which exist in top soils in Lanzhou with comprehensive index and cluster analysis methods. The results show that the pollution of heavy metals of top soil in the commercial zone is the severest, and the others are approximately even. Transportation, industrial and agricultural activities have played an important role in the heavy metal pollution of top soils. In addition, the positive impact of the green belt is quite obvious.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第1期24-28,共5页
Journal of Lanzhou University(Natural Sciences)
基金
教育部重点基金资助项(MOE105171)
关键词
兰州市
表层土壤
功能区
重金属
Lanzhou City
top soil
functional zone
heavy metal
