期刊
LIMNOLOGY AND OCEANOGRAPHY LETTERS
卷 3, 期 3, 页码 156-167出版社
WILEY
DOI: 10.1002/lol2.10061
关键词
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资金
- Knut and Alice Wallenberg foundation [KAW 2013.0091]
- Swedish research council FORMAS [214-2009-872]
- Swedish research council VR [2012-00048, 201604829]
- SKB
- ERC [725546]
- Carlsberg Foundation
- FORMAS [2015-1559]
- Swedish Research Council (VR)
- Swedish Environmental Protection Agency
- Swedish Agency for Marine and Water Management
- Swedish Energy Agency
- European Research Council (ERC) [725546] Funding Source: European Research Council (ERC)
- Formas [2012-00048] Funding Source: Formas
- Swedish Research Council [2012-00048] Funding Source: Swedish Research Council
Low-order streams are suggested to dominate the atmospheric CO2 source of all inland waters. Yet, many large-scale stream estimates suffer from methods not designed for gas emission determination and rarely include other greenhouse gases such as CH4. Here, we present a compilation of directly measured CO2 and CH4 concentration data from Swedish low-order streams (> 1600 observations across > 500 streams) covering large climatological and land-use gradients. These data were combined with an empirically derived gas transfer model and the characteristics of a ca. 400,000 km stream network covering the entire country. The total stream CO2 and CH4 emission corresponded to 2.7 Tg C yr(-1) (95% confidence interval: 2.0-3.7) of which the CH4 accounted for 0.7% (0.02 Tg C yr(-1)). The study highlights the importance of low-order streams, as well as the critical need to better represent variability in emissions and stream areal extent to constrain future stream C emission estimates.
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