Massive remobilization of permafrost carbon during post-glacial warming
| Parent link: | Nature Communications: open access journal.— , 2010- Vol. 7, article 13653.— 2016.— [10 р.] |
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| अन्य लेखक: | , , , , , , , , , , , |
| सारांश: | Title screen Recent hypotheses, based on atmospheric records and models, suggest that permafrost carbon (PF-C) accumulated during the last glaciation may have been an important source for the atmospheric CO2 rise during post-glacial warming. However, direct physical indications for such PF-C release have so far been absent. Here we use the Laptev Sea (Arctic Ocean) as an archive to investigate PF-C destabilization during the last glacial–interglacial period. Our results show evidence for massive supply of PF-C from Siberian soils as a result of severe active layer deepening in response to the warming. Thawing of PF-C must also have brought about an enhanced organic matter respiration and, thus, these findings suggest that PF-C may indeed have been an important source of CO2 across the extensive permafrost domain. The results challenge current paradigms on the post-glacial CO2 rise and, at the same time, serve as a harbinger for possible consequences of the present-day warming of PF-C soils. |
| भाषा: | अंग्रेज़ी |
| प्रकाशित: |
2016
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| विषय: | |
| ऑनलाइन पहुंच: | http://dx.doi.org/10.1038/ncomms13653 |
| स्वरूप: | इलेक्ट्रोनिक पुस्तक अध्याय |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=653175 |