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	Identification of traffic-related metals and the effects of different environments on their enrichment in roadside soils along the Qinghai-Tibet highway
	Zhang H.; Wang, Z. F.; Zhang, Y. L.; Ding, M. J.; Li, L. H.
	2015
关键词	Qinghai-Tibet highway Road transportation Soil pollution Tibetan Plateau Traffic-related metals heavy-metals background concentrations aromatic-hydrocarbons trace-elements lead china contamination pollution urban accumulation
英文摘要	The road transportation could affect roadside soils environment detrimentally, including heavy metal enrichment. In order to identify and evaluate the enrichment of heavy metals resulted from road transportation on the Tibetan Plateau, the 11 heavy metals (V, Cr, Co, Ni, Cu, Zn, As, Cd, Rb, Pb and Tl) in the topsoil (0-10 cm depth) from four sites along the Qinghai-Tibet highway were discussed in this study. Our results indicate that heavy metals such as Cr, Cu, Zn, As, Cd and Pb are related to road transportation. The content of most of these heavy metals in roadside soils decreased exponentially with the distance from the road, as did some of the Nemero Synthesis Indexes (PN values). The contamination factor for the traffic-related metals ranged from 0.56 (no pollution) to 5.67 (considerable pollution) and the Nemero Synthesis Indexes of these heavy metals ranged from 0.80 (no pollution) to 4.49 (severe pollution). Cd was of priority concern as it had the highest contamination factor. The highest PN value for these traffic-related heavy metals was found in soils at site TTH (alpine steppe). Although transportation contributed to the high contents of these traffic-related metals in roadside environments, regional differences such as wind and the terrain also had significant relationship with their enrichment in these roadside soils. The roadside distance at which there is a potential risk to livestock and wildlife from the contamination of soils by heavy metals should be determined scientifically along the Qinghai-Tibet highway, based on the different natural environments found in the region. (C) 2015 Elsevier B.V. All rights reserved.
出处	Science of the Total Environment
卷	521
页	160-172
收录类别	SCI
语种	英语
ISSN号	0048-9697
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/39051]
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.,Wang, Z. F.,Zhang, Y. L.,et al. Identification of traffic-related metals and the effects of different environments on their enrichment in roadside soils along the Qinghai-Tibet highway. 2015.

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