气候变化领域集成服务门户(CCPortal): Dissolved organic carbon in glaciers of the southeastern Tibetan Plateau: Insights into concentrations and possible sources

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DOI	10.1371/journal.pone.0205414
	Dissolved organic carbon in glaciers of the southeastern Tibetan Plateau: Insights into concentrations and possible sources
	Zhang, Yulan; Kang, Shichang; Li, Gang; Gao, Tanguang; Chen, Pengfei; Li, Xiaofei; Liu, Yajun; Hu, Zhaofu; Sun, Shiwei; Guo, Junming; Wang, Kun; Chen, Xintong; Sillanpaa, Mika
发表日期	2018
ISSN	1932-6203
卷号	13 期号:10
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.
学科领域	Science & Technology - Other Topics
语种	英语
WOS研究方向	Multidisciplinary Sciences
来源期刊	PLOS ONE
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/111947
作者单位	Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, 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]. 中国科学院西北生态环境资源研究院,2018,13(10).
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).
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).