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Nitrification contr...
Nitrification controls N2O production rates in a frozen boreal forest soil
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Oquist, M. G. (author)
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Petrone, K. (author)
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Nilsson, M. (author)
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- Klemedtsson, Leif, 1953 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för växt- och miljövetenskaper,Department of Plant and Environmental Sciences
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(creator_code:org_t)
- Elsevier BV, 2007
- 2007
- English.
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In: Soil Biology & Biochemistry. - : Elsevier BV. - 0038-0717. ; 39:7, s. 1809-1811
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https://doi.org/10.1...
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Abstract
Subject headings
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- The winter season has been identified as a significant contributor to N2O emissions from boreal soils, but our understanding of the processes regulating these emissions is fragmentary. We investigated potential N-sources and pathways involved in N2O formation in a frozen boreal forest soil by labeling soil samples with N-15-containing substrates, and measured rates of (N2O)-N-15/N-15(2) formation under both oxic and anoxic conditions. Our results showed that all N2O produced in the frozen samples originate from denitrification, but the rate-limiting factor is NO3- availability, which is largely governed by nitrification. This suggests that N2O formation in frozen boreal soils may be sustained for a prolonged period of time, but is governed by a delicate balance of the O-2 regime. (c) 2007 Elsevier Ltd. All rights reserved.
Subject headings
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Keyword
- denitrification
- low-temperature
- nitrification
- nitrous oxide emission
- MASS-SPECTROMETRY
- NITROUS-OXIDE
- DENITRIFICATION
- DINITROGEN
- CH4
- CO2
Publication and Content Type
- ref (subject category)
- art (subject category)
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