DOI: 10.1002/2015GL065075
论文题名: Recent decrease in DOC concentrations in Arctic lakes of southwest Greenland
作者: Saros J.E. ; Osburn C.L. ; Northington R.M. ; Birkel S.D. ; Auger J.D. ; Stedmon C.A. ; Anderson N.J.
刊名: Geophysical Research Letters
ISSN: 0094-9576
EISSN: 1944-9307
出版年: 2015
卷: 42, 期: 16 起始页码: 6703
结束页码: 6709
语种: 英语
英文关键词: Arctic
; carbon
; DOC
; lakes
Scopus关键词: Carbon
; Deposition
; Ionic strength
; Lakes
; Meteorological problems
; Organic carbon
; Sulfur compounds
; Arctic
; Atmospheric depositions
; Dissolved organic carbon
; DOC
; DOC concentrations
; Sulfate concentrations
; Sulfate deposition
; Terrestrial carbon cycle
; Surface waters
; atmospheric deposition
; carbon cycle
; concentration (composition)
; dissolved organic carbon
; lacustrine environment
; lake water
; permafrost
; sulfate
; surface water
; Arctic
; Greenland
; Kangerlussuaq Fjord
英文摘要: A key indicator of changes in the terrestrial carbon cycle is shifting dissolved organic carbon (DOC) concentrations in surface waters. Arctic permafrost holds twice as much C as the atmosphere, thus recent warming and changes in atmospheric deposition to the region raise the need for a better understanding of how DOC is changing in arctic surface waters. In Kangerlussuaq, Greenland, lakewater DOC concentrations declined by 14 to 55% (absolute changes of 1 to 24 mg L-1) between 2003 and 2013, without significant changes in quality. Lakewater sulfate concentrations, but not chloride or conductivity, increased. These results suggest that similar to processes that have occurred at northern midlatitudes, increases in soil ionic strength as a result of sulfate enrichment may be linked to declining surface water DOC concentrations. Such enrichment may be occurring with enhanced non-sea-salt sulfate deposition. Our results reveal that rapid changes are occurring in the carbon cycle of this region of southwest Greenland. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84941747136&doi=10.1002%2f2015GL065075&partnerID=40&md5=b50c00566f89b47a84967b1a4f4897dd
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9191
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Climate Change Institute, University of Maine, Orono, ME, United States
Recommended Citation:
Saros J.E.,Osburn C.L.,Northington R.M.,et al. Recent decrease in DOC concentrations in Arctic lakes of southwest Greenland[J]. Geophysical Research Letters,2015-01-01,42(16).