Till sidans topp

Sidansvarig: Webbredaktion
Sidan uppdaterades: 2012-09-11 15:12

Tipsa en vän
Utskriftsversion

Nitrous oxide production … - Göteborgs universitet Till startsida
Webbkarta
Till innehåll Läs mer om hur kakor används på gu.se

Nitrous oxide production in a forest soil at low temperatures - processes and environmental controls

Artikel i vetenskaplig tidskrift
Författare M. G. Oquist
M. Nilsson
Fred Sörensson
Åsa Kasimir Klemedtsson
T. Persson
Per Weslien
Leif Klemedtsson
Publicerad i Fems Microbiology Ecology
Volym 49
Nummer/häfte 3
Sidor 371-378
ISSN 0168-6496
Publiceringsår 2004
Publicerad vid Institutionen för cell- och molekylärbiologi
Botaniska institutionen
Sidor 371-378
Språk en
Länkar dx.doi.org/10.1016/j.femsec.2004.04...
Ämnesord denitrification, low-temperature, nitrous oxide emission, soil nitrogen, transformation, FREE AMINO ACIDS, N2O PRODUCTION, FROZEN SOILS, SEASONAL VARIABILITY, ARABLE SOILS, FREEZE-THAW, EMISSIONS, DENITRIFICATION, NITRIFICATION, INHIBITION
Ämneskategorier Biologiska vetenskaper

Sammanfattning

Recent investigations have highlighted the relative importance of the winter season for emissions of N2O from boreal soils. However, our understanding of the processes and environmental controls regulating these emissions is fragmentary. Therefore, we investigated the potential for, and relative importance of, N2O formation at temperatures below 0 degreesC in laboratory experiments involving incubations of a Swedish boreal forest soil. Our results show that frozen soils have a high potential for N2O formation and subsequent emission. Net N2O production rates at -4 degreesC equaled those observed at +10 to +15 degreesC at moisture contents >60% of the soil's water-holding capacity. The source of this N2O was found to be denitrification occurring in anoxic microsites in the frozen soil and temperature per se did not control the denitrification rates at temperatures around 0 degreesC. Furthermore, both net nitrogen-mineralisation and nitrification were observed in the frozen soil samples. Based on these findings we propose a conceptual model for the temperature response of N2O formation in soils at low temperatures. (C) 2004 Federation of European Microbiological Societies. Published by Elsevier B.V. All rights reserved.

Sidansvarig: Webbredaktion|Sidan uppdaterades: 2012-09-11
Dela:

På Göteborgs universitet använder vi kakor (cookies) för att webbplatsen ska fungera på ett bra sätt för dig. Genom att surfa vidare godkänner du att vi använder kakor.  Vad är kakor?