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|a Increased soil emissions of potent greenhouse gases under increased atmospheric CO2 |h [electronic resource]. |
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|a [S.l.] : |b Macmillan Publishers Limited, |c 2011-07-14. |
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|a Please contact the owning institution for licensing and permissions. It is the user's responsibility to ensure use does not violate any third party rights. |
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|a Increasing concentrations of atmospheric carbon dioxide (CO2) can
affect biotic and abiotic conditions in soil, such as microbial activity
and water content1,2. In turn, these changes might be expected to
alter the production and consumption of the important greenhouse
gases nitrous oxide (N2O) and methane (CH4) (refs 2, 3). However,
studies on fluxes of N2O and CH4 from soil under increased atmosphericCO2
have not been quantitatively synthesized.Hereweshow,
using meta-analysis, that increased CO2 (ranging from 463 to 780
parts per million by volume) stimulates both N2O emissions from
upland soils and CH4 emissions from rice paddies and natural
wetlands. Because enhanced greenhouse-gas emissions add to the
radiative forcing of terrestrial ecosystems, these emissions are
expected to negate at least 16.6 per cent of the climate change mitigation
potential previously predicted froman increase in the terrestrial
carbon sink under increased atmospheric CO2 concentrations4.
Our results therefore suggest that the capacity of land ecosystems to
slow climate warming has been overestimated. |
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|a Electronic reproduction. |c Florida International University, |d 2015. |f (dpSobek) |n Mode of access: World Wide Web. |n System requirements: Internet connectivity; Web browser software. |
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|a Kees Jan van Groenigen. |
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|a dpSobek |c Sea Level Rise |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15042538/00001 |y Click here for full text |
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|a http://dpanther.fiu.edu/sobek/content/FI/15/04/25/38/00001/FI15042538_thm.jpg |
