气候变化领域集成服务门户(CCPortal): Carbonaceous matter in glacier at the headwaters of the Yangtze River: Concentration, sources and fractionation during the melting process

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DOI	10.1016/j.jes.2019.08.001
	Carbonaceous matter in glacier at the headwaters of the Yangtze River: Concentration, sources and fractionation during the melting process
	Hu, Zhaofu; Kang, Shichang; He, Xiaobo; Yan, Fangping; Zhang, Yulan; Chen, Pengfei; Li, Xiaofei; Gao, Shaopeng; Li, Chaoliu
通讯作者	Kang, SC (通讯作者)
发表日期	2020
ISSN	1001-0742
EISSN	1878-7320
起始页码	389
结束页码	397
卷号	87
英文摘要	Carbonaceous matter has an important impact on glacial retreat in the Tibetan Plateau, further affecting the water resource supply. However, the related studies on carbonaceous matter are still scarce in Geladaindong (GLDD) region, the source of the Yangtze River. Therefore, the concentration, source and variations of carbonaceous matter at Ganglongjiama (GLJM) glacier in GLDD region were investigated during the melting period in 2017, which could deepen our understanding on carbonaceous matter contribution to glacier melting. The results showed that dissolved organic carbon (DOC) concentration of snowpit samples (283 +/- 200 mu g/L) was much lower than that of precipitation samples (624 +/- 361 mu g/L), indicating that large parts of DOC could be rapidly leached from the snowpit during the melting process. In contrast, refractory black carbon (rBC) concentration measured by Single Particle Soot Photometer of snowpit samples (4.27 +/- 3.15 mu g/L) was much higher than that of precipitation samples (0.97 +/- 0.49 mu g/L). Similarly, DOC with high mass absorption cross-section measured at 365 nm value was also likely to enrich in snowpit during the melting process. In addition, it was found that both rBC and DOC with high light-absorbing ability began to leach from the snowpit when melting process became stronger. Therefore, rBC and DOC with high light-absorbing ability exhibited similar behavior during the melting process. Based on relationship among DOC, rBC and K+ in precipitation, the main source of carbonaceous matter in GLJM glacier was biomass burning during the study period. (c) 2019 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
关键词	DISSOLVED ORGANIC-CARBON LIGHT-ABSORBING IMPURITIES TIBETAN PLATEAU BLACK CARBON ABSORPTION CHARACTERISTICS ICE CORE ELEMENTAL CARBON REMOTE STATIONS SNOW AEROSOLS
英文关键词	Carbonaceous matter; Major ions; Melting process; Light absorption characteristic; Tibetan Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000499953500035
来源期刊	JOURNAL OF ENVIRONMENTAL SCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259812
推荐引用方式 GB/T 7714	Hu, Zhaofu,Kang, Shichang,He, Xiaobo,et al. Carbonaceous matter in glacier at the headwaters of the Yangtze River: Concentration, sources and fractionation during the melting process[J]. 中国科学院青藏高原研究所,2020,87.
APA	Hu, Zhaofu.,Kang, Shichang.,He, Xiaobo.,Yan, Fangping.,Zhang, Yulan.,...&Li, Chaoliu.(2020).Carbonaceous matter in glacier at the headwaters of the Yangtze River: Concentration, sources and fractionation during the melting process.JOURNAL OF ENVIRONMENTAL SCIENCES,87.
MLA	Hu, Zhaofu,et al."Carbonaceous matter in glacier at the headwaters of the Yangtze River: Concentration, sources and fractionation during the melting process".JOURNAL OF ENVIRONMENTAL SCIENCES 87(2020).