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	Dissolved organic carbon in glaciers of the southeastern Tibetan Plateau: Insights into concentrations and possible sources
	Zhang, Yulan1,2; Kang, Shichang1,3,4; Li, Gang5; Gao, Tanguang6; Chen, Pengfei1; Li, Xiaofei1; Liu, Yajun1; Hu, Zhaofu1,3; Sun, Shiwei1,3; Guo, Junming1
刊名	PLOS ONE
	2018-10-11
卷号	13期号:10页码:21
ISSN号	1932-6203
DOI	10.1371/journal.pone.0205414
通讯作者	Kang, Shichang(shichang.kang@lzb.ac.cn)
英文摘要	Dissolved organic carbon (DOC) released from glaciers has an important role in the biogeochemistry of glacial ecosystems. This study focuses on DOC from glaciers of the southeastern Tibetan Plateau, where glaciers are experiencing rapid shrinkage. We found that concentrations of DOC in snowpits (0.16 +/- 0.054 mu g g(-1)), aged snow (0.16 +/- 0.048 mu g g(-1)), and bare ice (0.18 +/- 0.082 mu g g(-1)) were similar across the southeastern Tibetan Plateau, but were slightly lower than those in other glaciers on the Tibetan Plateau. Vertical variations of DOC, particulate organic carbon, black carbon, and total nitrate in snowpit showed no systematic variations in the studied glaciers, with high values of DOC occurring in the ice or dusty layers. We estimated the export of DOC and particulate organic carbon from glaciers to be 1.96 +/- 0.66 Gg yr(-1) and 5.88 +/- 2.15 Gg yr(-1) in this region, respectively, indicating that organic carbon released from glacier meltwater may be affecting downstream ecosystems. Potential sources of the air masses arriving at the southeastern Tibetan glaciers include South Asia, Central Asia, Middle East, and northwest China. Emissions from biomass burning of South Asia played an important role in the deposition of DOC to the glacier, which can be evidenced by backward trajectories and fire spot distributions from MODIS and CALIPSO images. Our findings suggest that anthropogenic aerosols contribute abundant DOC to glaciers on the southeastern Tibetan Plateau. The pronounced rate of glacial melting in the region may be delivering increased quantities of relic DOC to downstream rivers.
收录类别	SCI
WOS关键词	LIGHT-ABSORBING IMPURITIES ; GREENLAND ICE-SHEET ; BLACK CARBON ; CHEMICAL-COMPOSITION ; ALBEDO REDUCTION ; CLIMATE-CHANGE ; BROWN CLOUDS ; SNOW ; MATTER ; HIMALAYAS
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
语种	英语
出版者	PUBLIC LIBRARY SCIENCE
WOS记录号	WOS:000447173500072
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558280
专题	寒区旱区环境与工程研究所
通讯作者	Kang, Shichang
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou, Gansu, Peoples R China 2.Lappeenranta Univ Technol, Lab Green Chem, Mikkeli, Finland 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China 5.Lanzhou Meteorol Bur, Arid Meteorol Res Inst, Lanzhou, Gansu, Peoples R China 6.Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yulan,Kang, Shichang,Li, Gang,et al. Dissolved organic carbon in glaciers of the southeastern Tibetan Plateau: Insights into concentrations and possible sources[J]. PLOS ONE,2018,13(10):21.
APA	Zhang, Yulan.,Kang, Shichang.,Li, Gang.,Gao, Tanguang.,Chen, Pengfei.,...&Sillanpaa, Mika.(2018).Dissolved organic carbon in glaciers of the southeastern Tibetan Plateau: Insights into concentrations and possible sources.PLOS ONE,13(10),21.
MLA	Zhang, Yulan,et al."Dissolved organic carbon in glaciers of the southeastern Tibetan Plateau: Insights into concentrations and possible sources".PLOS ONE 13.10(2018):21.

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