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学科主题: 地理学::自然地理学
题名: The role of melting alpine glaciers in mercury export and transport: An intensive sampling campaign in the Qugaqie Basin, inland Tibetan Plateau
作者: Sun, XJ (Sun, Xuejun)1, 4; Wang, K (Wang, Kang)1, 5; Kang, SC (Kang, Shichang)2, 3; Guo, JM (Guo, Junming)1, 4; Zhang, GS (Zhang, Guoshuai)1; Huang, J (Huang, Jie)1, 3; Cong, ZY (Cong, Zhiyuan)1, 3; Sun, SW (Sun, Shiwei)2, 4; Zhang, QG (Zhang, Qianggong)1, 3
通讯作者: Zhang, QG
关键词: NAM CO BASIN ; ATMOSPHERIC MERCURY ; SPRINGTIME DEPLETION ; SPATIAL-DISTRIBUTION ; ZHADANG GLACIER ; CLIMATE CHANGES ; ARCTIC-OCEAN ; RIVER-BASIN ; ICE CORE ; SNOW
刊名: ENVIRONMENTAL POLLUTION
发表日期: 2017
DOI: 10.1016/j.envpol.2016.10.079
卷: 220, 期:0, 页:936-945
收录类别: SCI
合作性质: 国内
文章类型: Article
类目[WOS]: Environmental Sciences ; Environmental Sciences & Ecology
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: Glaciers, particularly alpine glaciers, have been receding globally at an accelerated rate in recent decades. The glacial melt-induced release of pollutants (e.g., mercury) and its potential impact on the atmosphere and glacier-fed ecosystems has drawn increasing concerns. During 15th-20th August, 2011, an intensive sampling campaign was conducted in Qugaqie Basin (QB), a typical high mountain glacierized catchment in the inland Tibetan Plateau, to investigate the export and transport of mercury from glacier to runoff. The total mercury (THg) level in Zhadang (ZD) glacier ranged from <1 to 20.8 ng L-1, and was slightly higher than levels measured in glacier melt water and the glacier-fed river. Particulate Hg (PHg) was the predominant form of Hg in all sampled environmental matrices. Mercury concentration in Qugaqie River (QR) was characterized by a clear diurnal variation which is linked to glacier melt. The estimated annual Hg exports by ZD glacier, the upper river basin and the entire QB were 8.76, 7.3 and 157.85 g, respectively, with respective yields of 4.61, 0.99 and 2.74 mu g m(-2) yr(-1). Unique landforms and significant gradients from the glacier terminus to QB estuary might promote weathering and erosion, thereby controlling the transport of total suspended particulates (TSP) and PHg. In comparison with other glacier-fed rivers, QB has a small Hg export yet remarkably high Hg yield, underlining the significant impact of melting alpine glaciers on regional Hg biogeochemical cycles. Such impacts are expected to be enhanced in high altitude regions under the changing climate. (C) 2016 Elsevier Ltd. All rights reserved.
语种: 英语
WOS记录号: WOS:000390732300020
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/8405
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China.
2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China.
3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China.
4.Univ CAS, Beijing 100049, Peoples R China.
5.Univ Manitoba, Dept Geog & Environm, Ctr Earth Observat Sci, Winnipeg, MB R3T 2N2, Canada.

Recommended Citation:
Sun, XJ ,Wang, K ,Kang, SC ,et al. The role of melting alpine glaciers in mercury export and transport: An intensive sampling campaign in the Qugaqie Basin, inland Tibetan Plateau[J]. ENVIRONMENTAL POLLUTION,2017,220(0):936-945.
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