Regional atmospheric cooling and wetting effect of permafrost thaw-induced boreal forest loss
نویسندگان
چکیده
منابع مشابه
Forests on thawing permafrost: fragmentation, edge effects, and net forest loss.
Much of the world's boreal forest occurs on permafrost (perennially cryotic ground). As such, changes in permafrost conditions have implications for forest function and, within the zone of discontinuous permafrost (30-80% permafrost in areal extent), distribution. Here, forested peat plateaus underlain by permafrost are elevated above the surrounding permafrost-free wetlands; as permafrost thaw...
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Recent fire activity throughout Alaska has increased the need to understand postfire impacts on soils and permafrost vulnerability. Our study utilized data and modeling from a permafrost and ecosystem gradient to develop a mechanistic understanding of the shortand long-term impacts of tundra and boreal forest fires on soil thermal dynamics. Fires influenced a variety of factors that altered the...
متن کاملLong-term CO2 production following permafrost thaw
Thawing permafrost represents a poorly understood feedback mechanism of climate change in the Arctic, but with a potential impact owing to stored carbon being mobilized1–5. We have quantified the long-term loss of carbon (C) from thawing permafrost in Northeast Greenland from 1996 to 2008 by combining repeated sediment sampling to assess changes in C stock and >12 years of CO2 production in inc...
متن کاملModelling atmospheric OH-reactivity in a boreal forest ecosystem
We have modelled the total atmospheric OHreactivity in a boreal forest and investigated the individual contributions from gas phase inorganic species, isoprene, monoterpenes, and methane along with other important VOCs. Daily and seasonal variation in OH-reactivity for the year 2008 was examined as well as the vertical OHreactivity profile. We have used SOSA; a one dimensional vertical chemistr...
متن کاملThe role of watershed characteristics, permafrost thaw, and wildfire
Introduction Conclusions References
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ژورنال
عنوان ژورنال: Global Change Biology
سال: 2016
ISSN: 1354-1013
DOI: 10.1111/gcb.13348