气候变化领域集成服务门户(CCPortal): Dissolved Iron Supply from Asian Glaciers: Local Controls and a Regional Perspective

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DOI	10.1029/2018GB006113
	Dissolved Iron Supply from Asian Glaciers: Local Controls and a Regional Perspective
	Li X.; Ding Y.; Hood E.; Raiswell R.; Han T.; He X.; Kang S.; Wu Q.; Yu Z.; Mika S.; Liu S.; Li Q.
发表日期	2019
ISSN	0886-6236
EISSN	1944-9224
起始页码	1223
结束页码	1237
卷号	33 期号:10
英文摘要	Ice sheets have been shown to deliver large amounts of labile iron (Fe) to aquatic ecosystems; however, the role of glaciers distinct from ice sheets in supplying labile Fe to downstream ecosystems is less well understood despite their rapid volume loss globally. Direct and continuous measurements of Fe from glaciers throughout an entire melt season are very limited to date. Here we present extensive seasonal data on 0.45-μm-filtered Fe (dFe) from three glaciers in Asia. Concentrations of dFe are negatively correlated with glacier discharge, and dFe yields are closely related to specific discharge. Based on our study and previously published dFe data, we estimate the release of dFe from Asian glaciers to be 23.8±14.1 Gg/a. We further compile a global data set of dFe from more than 12 glaciers, which, when combined with data on glacier discharge, suggest that the release of dFe from glaciers globally is on the order of 185±172 Gg/a. This finding suggests that glaciers may provide a substantial, but largely unrecognized source of potentially labile Fe, and may become increasingly important for the Fe biogeochemical cycle in a warming climate. ©2019. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129707
作者单位	College of Hydrology and Water Resources/State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, China; State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China; State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China; University of Chinese Academy of Sciences, Beijing, China; Environmental Science and Geography Program, University of Alaska Southeast, Juneau, AK, United States; Cohen Biogeochemistry Laboratory, School of Earth and Environment, University of Leeds, Leeds, United Kingdom; Laboratory of Green Chemistry, School of Engineering Science, Lappeenranta University of Technology, Mikkeli, Finland; Hydrology and Water Resource Survey Bureau of Qinghai Province, Xining, China
推荐引用方式 GB/T 7714	Li X.,Ding Y.,Hood E.,et al. Dissolved Iron Supply from Asian Glaciers: Local Controls and a Regional Perspective[J],2019,33(10).
APA	Li X..,Ding Y..,Hood E..,Raiswell R..,Han T..,...&Li Q..(2019).Dissolved Iron Supply from Asian Glaciers: Local Controls and a Regional Perspective.Global Biogeochemical Cycles,33(10).
MLA	Li X.,et al."Dissolved Iron Supply from Asian Glaciers: Local Controls and a Regional Perspective".Global Biogeochemical Cycles 33.10(2019).