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	The effects of the Qinghai-Tibet railway on heavy metals enrichment in soils
	Zhang H. ; Wang Z. F. ; Zhang Y. L. ; Hu Z. J.
	2012
关键词	Soil pollution Railway Tibetan Plateau Heavy metal polycyclic aromatic-hydrocarbons contaminated soils roadside soils trace-elements hong-kong urban highway lead deposition pollution
英文摘要	The impact of land transportation on local soil environments is an important topic in environmental and ecological sciences. The rapid development of transportation infrastructure lends increasing importance to studies that identify and evaluate related heavy metal pollution. This paper discusses the effects of railways on soil heavy metal enrichments in the Tibetan plateau. At a representative area along the Haergai-Delingha railway, lead, cadmium, copper, zinc, chromium, nickel, cobalt, and vanadium were measured in 127 topsoil samples (0-10 cm depth). The results indicate that railway transport has a significant effect on the concentration of Zn, Cd and Pb in the soil, with levels of enrichment ranging from no pollution to significant pollution. The affected area was within 20 m of the railway. The soil at Delingha was the most contaminated soil with heavy metals, and the enrichment level of Cd in the soil was the highest along the Qinghai-Tibet railway. The horizontal distributions of the three heavy metals present different characteristics at different sampling sites, which may be due to discrepancies in terrain and vegetation types. Alkaline soils and guardrails along the railway might reduce the effect of soil pollution on local people and animals. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.
出处	Science of the Total Environment
卷	439
页	240-248
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/311030/30689]
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. The effects of the Qinghai-Tibet railway on heavy metals enrichment in soils. 2012.

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