Methane Fluxes Into Atmosphere from Fennoskandian Lakes
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The experimental data on methane fluxes into the atmosphere from Fennoscandian lakes is analyzed. The contribution made by the lake network of this northern region to the atmospheric methane budget is estimated as 320 ± 23 KtCH4 per year. From 16 to 37% of the annual methane emission from Fennoscandian lakes is carried out by methane produced during the ice cover period. The methane fluxe rate from studied lakes is estimated as 2.6 ± 0.2 gCH4m–2 yr–1. Among lakes of the region, small lakes (area <0.1 km2) are the most intensive sources of atmospheric methane per unit area.
Keywords:methane fluxes lakes natural zones Fennoskandia
We thank V.S. Kazantsev for his help in processing information about the lake areas and the personnel at Paanajarvi National Park for their assistance in our field research. This work was supported by the Russian Foundation of Basic Research (project no. 14-05-91764) and by the state assignment.
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