Potential carbon emissions dominated by carbon dioxide from thawed permafrost soils

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F16%3A43890946" target="_blank" >RIV/60076658:12310/16:43890946 - isvavai.cz</a>

Result on the web

<a href="http://www.nature.com/nclimate/journal/v6/n10/full/nclimate3054.html" target="_blank" >http://www.nature.com/nclimate/journal/v6/n10/full/nclimate3054.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/NCLIMATE3054" target="_blank" >10.1038/NCLIMATE3054</a>

Result language

angličtina

Original language name

Potential carbon emissions dominated by carbon dioxide from thawed permafrost soils

Original language description

Increasing temperatures in northern high latitudes are causing permafrost to thaw(1), making large amounts of previously frozen organic matter vulnerable to microbial decomposition(2). Permafrost thaw also creates a fragmented landscape of drier and wetter soil conditions(3,4) that determine the amount and form (carbon dioxide (CO2), or methane (CH4)) of carbon (C) released to the atmosphere. The rate and form of C release control the magnitude of the permafrost C feedback, so their relative contribution with a warming climate remains unclear(5,6). We quantified the effect of increasing temperature and changes from aerobic to anaerobic soil conditions using 25 soil incubation studies from the permafrost zone. Here we show, using two separate meta-analyses, that a 10 degrees C increase in incubation temperature increased C release by a factor of 2.0 (95% confidence interval (CI), 1.8 to 2.2). Under aerobic incubation conditions, soils released 3.4 (95% CI, 2.2 to 5.2) times more C than under anaerobic conditions. Even when accounting for the higher heat trapping capacity of CH4, soils released 2.3 (95% CI, 1.5 to 3.4) times more C under aerobic conditions. These results imply that permafrost ecosystems thawing under aerobic conditions and releasing CO2 will strengthen the permafrost C feedback more than waterlogged systems releasing CO2 and CH4 for a given amount of C.

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EH - Ecology - communities

OECD FORD branch

—

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nature Climate Change

ISSN

1758-678X

e-ISSN

—

Volume of the periodical

6

Issue of the periodical within the volume

10

Country of publishing house

GB - UNITED KINGDOM

Number of pages

4

Pages from-to

950-953

UT code for WoS article

000388292800019

EID of the result in the Scopus database

—