GREENHOUSE-GAS EMISSIONS
; PERMAFROST THAW
; ORGANIC-CARBON
; METAL CONCENTRATION
; MAJOR ELEMENTS
; METHANE
; CO2
; DIOXIDE
; WATERS
; VARIABILITY
WOS学科分类:
Multidisciplinary Sciences
WOS研究方向:
Science & Technology - Other Topics
英文摘要:
The Western Siberia Lowland (WSL), the world's largest permafrost peatland, is of importance for understanding the high-latitude carbon (C) cycle and its response to climate change. Warming temperatures increase permafrost thaw and production of greenhouse gases. Also, permafrost thaw leads to the formation of lakes which are hotspots for atmospheric C emissions. Although lakes occupy similar to 6% of WSL, lake C emissions from WSL remain poorly quantified. Here we show high C emissions from lakes across all permafrost zones of WSL. The C emissions were especially high in shoulder seasons and in colder permafrost-rich regions. The total C emission from permafrost-affected lakes of WSL equals similar to 12 +/- 2.6 Tg C yr(-1) and is 2-times greater than region's C export to the Arctic coast. The results show that C emission from WSL lakes is a significant component in the high-latitude C cycle, but also suggest that C emission may decrease with warming.
1.Umea Univ, CIRC, Dept Ecol & Environm Sci, Linnaeus Vag 6, S-90187 Umea, Sweden 2.Univ Toulouse, CNRS, Geosci & Environm, GET UMR 5563, 14 Ave Edouard Belin, F-31400 Toulouse, France 3.Swedish Univ Agr Sci, Dept Forest Ecol & Management, S-90183 Umea, Sweden 4.Tomsk State Univ, BIOGEO CLIM Lab, Lenina 36, Tomsk 634050, Russia 5.Russian Acad Sci, IEPS, N Laverov Fed Ctr Integrated Arctic Res, Nab Severnoi Dviny 23, Arkhangelsk 163000, Russia
Recommended Citation:
Serikova, S.,Pokrovsky, O. S.,Laudon, H.,et al. High carbon emissions from thermokarst lakes of Western Siberia[J]. NATURE COMMUNICATIONS,2019-01-01,10