DOI: 10.1002/2015GL066501
论文题名: Biased sampling of methane release from northern lakes: A problem for extrapolation
作者: Wik M. ; Thornton B.F. ; Bastviken D. ; Uhlbäck J. ; Crill P.M.
刊名: Geophysical Research Letters
ISSN: 0094-9412
EISSN: 1944-9143
出版年: 2016
卷: 43, 期: 3 起始页码: 1256
结束页码: 1262
语种: 英语
英文关键词: diffusion
; ebullition
; methane
; northern lakes
; sampling bias
; subarctic
Scopus关键词: Diffusion
; Lakes
; Distributed measurements
; Ebullition
; Emission potential
; Long-term sampling
; Sampling bias
; Stratified sampling
; Subarctic
; Temporal and spatial
; Methane
; biogeochemical cycle
; biogeochemistry
; data acquisition
; diffusion
; emission inventory
; estimation method
; flux measurement
; lacustrine environment
; methane
; sampling bias
; seasonality
; spatiotemporal analysis
; subarctic region
英文摘要: Methane emissions from lakes are widely thought to be highly irregular and difficult to quantify with anything other than numerous distributed measurement stations and long-term sampling campaigns. In spite of this, a large majority of the study sites north of 50°N have been measured over surprisingly short time periods of only one to a few days. Using long-term data from three intensively studied small subarctic lakes, we recommend that measurements of diffusive methane flux and ebullition should be made over at least 11 and 39 days scattered throughout the ice-free season using depth-stratified sampling at 3 and 11 or more locations, respectively. We further show that low temporal and spatial resolutions are unlikely to cause overestimates. Therefore, we argue that most sites measured previously are likely underestimated in terms of emission potential. Avoiding these biases seen in much of the contemporary data is crucial to further constrain large-scale methane emissions from northern lakes and ponds. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961286957&doi=10.1002%2f2015GL066501&partnerID=40&md5=2965f63ff6bf6105e54f70f161d9dd37
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10375
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: Department of Geological Sciences, Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
Recommended Citation:
Wik M.,Thornton B.F.,Bastviken D.,et al. Biased sampling of methane release from northern lakes: A problem for extrapolation[J]. Geophysical Research Letters,2016-01-01,43(3).