气候变化领域集成服务门户(CCPortal): Distribution and vertical migration of polycyclic aromatic hydrocarbons in forest soil pits of southeastern Tibet

CCPortal

DOI	10.1007/s10653-017-9969-7
	Distribution and vertical migration of polycyclic aromatic hydrocarbons in forest soil pits of southeastern Tibet
	Xue, Yonggang; Wang, Xiaoping; Gong, Ping; Yao, Tandong
发表日期	2018
ISSN	0269-4042
EISSN	1573-2983
卷号	40 期号:5
英文摘要	PAHs could be transported to Tibetan Plateau in accompany with atmospheric circulation. The forest regions were found be an important sink for PAHs, while their distributions and migrations in forest are still uncertain. In this study, soil profile samples were collected in southeastern Tibet and the concentrations, distributions, and migration of PAHs in forest region were investigated. The PAHs levels in the forest soils were at the low end of remote sites, ranged from 27.4 to 120.3 ng g(-1) on a dry weight based. Due to low ambient temperature and high organic carbon content, enrichment of PAHs was found in higher altitude on north side. According to the soil profiles, the vertical distributions of PAHs in organic layers were mainly influenced by pedogenesis, while the vertical distributions in mineral layers were dominated by downward leaching effect. Enrich factor (EF) of PAHs was estimated, and the values in organic layers were positively correlated with the octanol-air partition coefficients (K-OA), but EFs in mineral layers decreased with the K-OA values. PAHs in the surface soils on the north side of forest were relatively stable, while the migration of PAHs on the south sides and other clearing sites was more active. The leaching rates of PAHs in clearing site ranged between 1.42 and 29.3%. The results from this study are valuable on the characterization of PAHs in Tibetan Plateau.
关键词	PAHs Forest soil Southeastern Tibet Vertical migration
学科领域	Engineering; Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Water Resources
语种	英语
WOS研究方向	Engineering, Environmental ; Environmental Sciences ; Public, Environmental & Occupational Health ; Water Resources
来源期刊	ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111976
作者单位	Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Xue, Yonggang,Wang, Xiaoping,Gong, Ping,et al. Distribution and vertical migration of polycyclic aromatic hydrocarbons in forest soil pits of southeastern Tibet[J]. 中国科学院西北生态环境资源研究院,2018,40(5).
APA	Xue, Yonggang,Wang, Xiaoping,Gong, Ping,&Yao, Tandong.(2018).Distribution and vertical migration of polycyclic aromatic hydrocarbons in forest soil pits of southeastern Tibet.ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,40(5).
MLA	Xue, Yonggang,et al."Distribution and vertical migration of polycyclic aromatic hydrocarbons in forest soil pits of southeastern Tibet".ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 40.5(2018).