中文摘要：

本文采用地积累指数法和富集因子法,对324国道塘头段两侧土壤重金属污染进行评价,结果表明：两种方法均能对人为污染行为做出较为科学的评价,且两种方法可得到相似的评价结果。评价中,采用地球化学背景值和福建省沿海土壤背景值,对土壤重金属污染程度进行对比分析,发现两种背景值对土壤重金属的污染程度,在分级上没有明显差异（重金属Cd除外）。土壤中Cd金属元素显著富集,人类活动的影响比较明显,而Cr、Zn元素均处于零级别污染。

英文摘要：

In this paper, Assessment of heavy-metal contamination in soil of Tangtou section on No. 324 main roads was conducted respectively by the method of index of geo-accumulation an d enrichment factor. The result revealed that both methods could make a scientific assessment of contamination caused by human and could gain similar assessing conclusion. During the assessment, a contrast an analysis of heavymetal contamination level is performed by respectively adopting the value of geo-chemistry background and the value of soil background of Fujian province; it showed that there was no distinct difference in grading between the two values （besides Cd）. Content of element Cd was obviously increased due to humans activities, but content of element Cr and Zn ranked in zero-level.