摘要
通过对沪宁高速公路南京段沥青路面两侧土壤进行取样分析,结果表明:在距离公路中心线10～120 m范围内,由公路行运产生的重金属Cd、Ni、Pb、Zn对土壤造成了不同程度污染,污染程度由高到低依次为Ni、Cd、Zn、Pb;在10-40 m范围内,Cr、Pb、Zn的浓度均随着水平距离的增加而呈现明显的减小趋势。同时,根据单因子指数法对污染物污染程度评价的结果表明,镍(Ni)的污染程度最重,最大污染指数达21.9,其次是Cd,最大污染指数达到11,Zn最大污染指数达到2.9,Pb最大污染指数达到1.4。
Analysis of soil sampling collected from either side of the Shanghai - Nanjing expressway asphalt pavement at Nanjing section showed that in the space ranging 10 ~ 120 m from the expressway center line, the soil was polluted to various extents by heavy metals from the road transport such as Cd, Ni, Pb, Zn, and the pollution degree from high to low was Ni, Cd, Zn, Pb. In the space ranging 10 -40 m, the concentrations of Cr, Pb and Zn showed an obvious decreasing trend with the increasing of horizontal distance. Meanwhile, according to the single factor index method, the assessment of pollution results indicated that nickel （Ni） pollution was the most serious one with the maximum pollution index reached to 21.9. The second was Cd with the maximum pollution index 11. The maximum pollution index of Zn was 2. 9 and that of Pb was 1.4.
出处
《森林工程》
2010年第4期59-63,共5页
Forest Engineering
基金
南京林业大学科技创新基金项目(163050024)
关键词
高速公路
土壤特性
评价
expressway
soil characteristics
assessment
