Heavy metal enrichment in the soil along the Delhi-Ulan section of the Qinghai-Tibet railway in China
文献类型：SCI/SSCI论文
| 作者 | Zhang H. ; Zhang Y. L. ; Wang Z. F. ; Ding M. J. |
| 发表日期 | 2013 |
| 关键词 | Qinghai-Tibet Railway Soil heavy metals Spatial distribution Tibetan Plateau polycyclic aromatic-hydrocarbons road-deposited sediments contaminated soils emissions pollution fertilizers environment phosphorus pollutants highways |
| 英文摘要 | The pollutants that are discharged from roads and traffic have attracted much attention recently. Nonetheless, most studies have mainly focused on highways and seldom on railways. In this study, soil samples were selected at the embankment and perpendicularly at different distances (2, 5, 10, 20, 30, 50, 60, 70, 80, 100, and 150 m) from the embankment bottom of the Qinghai-Tibet railway. Furthermore, soils were selected at four soil depths (5, 10, 20, and 30 cm) of each sample at the flat. The enrichment of nine heavy metals (V, Cr, Co, Ni, Cu, Zn, Rb, Cd, and Pb) in soils along the Delhi-Ulan section of the Qinghai-Tibet railway was studied. The results indicated that the mean concentrations of Cr, Ni, Cu, Zn, Pb, and Cd were highest at the embankment. The Cu concentrations in soils decreased by an S-curve-shaped function with increasing distance from the embankment, while Cd, Pb, and Zn decreased by inverse functions (p < 0.0001). The concentrations of other studied metal did not show significant changes with increasing distance. After performing a statistical analysis, Pb, Cd, and Zn in soils were considered to be influenced by railway operations. However, the influence was weak and only spanned less than 5 m from the bottom of the embankment horizontally and 10 cm from the surface vertically. The mean concentrations of heavy metals in soils along the Delhi-Ulan section of the Qinghai-Tibet railway were considered lower compared with those along other railways. |
| 出处 | Environmental Monitoring and Assessment |
| 卷 | 185 |
| 期 | 7 |
| 页 | 5435-5447 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0167-6369 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/30054]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Zhang H.,Zhang Y. L.,Wang Z. F.,et al. Heavy metal enrichment in the soil along the Delhi-Ulan section of the Qinghai-Tibet railway in China. 2013. |
入库方式： OAI收割
来源：地理科学与资源研究所
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