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DOI	10.1016/j.jes.2021.06.016
	Vertical distribution characteristics of soil mercury and its formation mechanism in permafrost regions: A case study of the Qinghai-Tibetan Plateau
	Liu, Yali; Wang, Junfeng; Guo, Junming; Wang, Luyang; Wu, Qingbai
通讯作者	Wang, JF ; Wu, QB (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China.
发表日期	2022
ISSN	1001-0742
EISSN	1878-7320
起始页码	311
结束页码	321
卷号	113
英文摘要	Continuing permafrost degradation is increasing the risk of mercury (Hg) exposure in the permafrost regions on the Qinghai-Tibetan Plateau (QTP), but related studies are still limited, especially the ones on the detailed Hg migration processes in permafrost. The vertical distribution characteristics of soil Hg were investigated in three ecosystems in the Beiluhe area on the QTP, and its influencing factors and formation mechanism were investigated. The results indicate that the total soil mercury (THg) concentration in the Beiluhe area remains at an extremely low level (6.33 +/- 2.45 ng/g). In the vertical profile, the THg concentration of the shallow soil layer (0-50 cm) (5.96 +/- 2.22 ng/g) is significantly lower than that of the deep layer (50-400 cm) (7.44 +/- 2.71 ng/g) ( p < 0.05). Within the upper 50 cm, the THg concentration decreases with soil depth, and the peak THg concentration occurs at 100-300 cm on the entire profile. Although the THg concentration is slightly affected by the organic matter in the shallow soil layer, in general, the soil parent material is the dominant factor affecting the THg concentration. Intense weathering results in a low THg concentration in the shallow soil layer because the soil Hg is carried downward with the soil moisture. To a certain depth, the impermeable frozen soil layer intercepts the flow of the soil Hg, and it forms a Hg enrichment layer. This paper presents the distinctive pattern of the soil Hg distribution in the permafrost regions of the QTP. (c) 2021 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
关键词	ACTIVE-LAYER ELEMENTAL MERCURY ATMOSPHERIC DEPOSITION WET DEPOSITION TRACE-ELEMENTS FOREST SOILS REMOTE SITE SPECIATION ADSORPTION TEMPERATURE
英文关键词	Total soil mercury; Alpine ecosystems; Permafrost; Mercury migration; Qinghai-Tibetan Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000740506000010
来源期刊	JOURNAL OF ENVIRONMENTAL SCIENCES
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/253760
作者单位	[Liu, Yali; Wang, Junfeng; Wang, Luyang; Wu, Qingbai] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Liu, Yali; Wang, Luyang] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Guo, Junming] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yali,Wang, Junfeng,Guo, Junming,et al. Vertical distribution characteristics of soil mercury and its formation mechanism in permafrost regions: A case study of the Qinghai-Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2022,113.
APA	Liu, Yali,Wang, Junfeng,Guo, Junming,Wang, Luyang,&Wu, Qingbai.(2022).Vertical distribution characteristics of soil mercury and its formation mechanism in permafrost regions: A case study of the Qinghai-Tibetan Plateau.JOURNAL OF ENVIRONMENTAL SCIENCES,113.
MLA	Liu, Yali,et al."Vertical distribution characteristics of soil mercury and its formation mechanism in permafrost regions: A case study of the Qinghai-Tibetan Plateau".JOURNAL OF ENVIRONMENTAL SCIENCES 113(2022).