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@ARTICLE{Wei:828820,
      author       = {Wei, Jing and Amelung, Wulf and Lehndorff, Eva and
                      Schloter, Michael and Vereecken, Harry and Brüggemann,
                      Nicolas},
      title        = {{N}$_{2}${O} and {NO}$_{x}$ emissions by reactions of
                      nitrite with soil organic matter of a {N}orway spruce
                      forest},
      journal      = {Biogeochemistry},
      volume       = {132},
      number       = {3},
      issn         = {1573-515X},
      address      = {Dordrecht [u.a.]},
      publisher    = {Springer Science + Business Media B.V.},
      reportid     = {FZJ-2017-02674},
      pages        = {325 - 342},
      year         = {2017},
      abstract     = {Nitrite (NO2−) as an important intermediate of the
                      biological nitrogen cycle is particularly reactive in acidic
                      soils and acts as a source of N2O and NOx (NO and NO2).
                      However, abiotic and biotic pathways of NO2−-driven N2O
                      and NOx production in forest soil and the role of soil
                      organic matter (SOM) in these processes are still unclear.
                      In this study, NO2− was applied to both unsterile and
                      sterilized soil samples as well as to different SOM
                      fractions from a Norway spruce forest. Biotic and abiotic
                      N2O emission was measured with an infrared absorption
                      analyzer and gas chromatography, while NOx emission was
                      quantified with a chemiluminescence analyzer. Isotopic
                      signatures of N2O (δ15Nbulk, δ18O, and 15N-N2O site
                      preference) were analyzed with an isotope ratio mass
                      spectrometer. After NO2− addition, a large amount of NOx
                      was emitted immediately, while N2O emission occurred 15–60
                      min later and was much lower compared to NOx. Sterilization
                      of soil decreased N2O emission significantly, but not NOx
                      emission. The 15N site preference of N2O ranged from 7.98 to
                      11.58‰ for abiotic and 4.69–7.42‰ for biotic sources.
                      The fulvic acid fraction contributed the most to abiotic N2O
                      emission, while the fastest NO and N2O emission occurred
                      after NO2−application to the humin fraction, followed by
                      the humic acid fraction. These results are important for the
                      future understanding of NOx and N2O sources, as well as the
                      use of isotopic signatures for source-partitioning N2O
                      emission from soil.},
      cin          = {IBG-3},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {255 - Terrestrial Systems: From Observation to Prediction
                      (POF3-255)},
      pid          = {G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000396123500006},
      doi          = {10.1007/s10533-017-0306-0},
      url          = {https://juser.fz-juelich.de/record/828820},
}