摘要
Abstract
The content of Cr, Cd, Pb, Zn, Cu and Hg in apple orchard soil in Tianshui City was determined and their distribution law was analyzed in our paper. The results showed that the apple orchard soil in Tianshui City was not polluted by Hg,Pb and Cd, while Zn content was beyond soil background value; the variation coefficient of Cd, Hg, Cu and Pb was higher,while Cu and Cr had lower variation coefficient,and it revealed that there was great difference of (Cd, Hg. Cu and Pb pollution in different sampling points;there was significant correlation among Hg, Cu and Pb, and the correlation coefficient of Cu and Pb was highest (0.764 7);the maximum value of heavy metal content occurred most frequently in Qin'an County, while the occurrence frequency of minimum value was highest in Qinzhou District and Maiji District.关键词
土壤/重金属/分布规律Key words
soil/ Heavy metal/ Distribution law分类
资源环境
