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@ARTICLE{Liu:282911,
      author       = {Liu, Shurong and Herbst, Michael and Bol, Roland and
                      Gottselig, Nina and Pütz, Thomas and Weymann, Daniel and
                      Wiekenkamp, Inge and Vereecken, Harry and Brüggemann,
                      Nicolas},
      title        = {{T}he contribution of hydroxylamine content to spatial
                      variability of {N}2{O} formation in soil of a {N}orway
                      spruce forest},
      journal      = {Geochimica et cosmochimica acta},
      volume       = {178},
      issn         = {0016-7037},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2016-01650},
      pages        = {76 - 86},
      year         = {2016},
      abstract     = {Hydroxylamine (NH2OH), a reactive intermediate of several
                      microbial nitrogen turnover processes, is a potential
                      precursor of nitrous oxide (N2O) formation in the soil.
                      However, the contribution of soil NH2OH to soil N2O emission
                      rates in natural ecosystems is unclear. Here, we determined
                      the spatial variability of NH2OH content and potential N2O
                      emission rates of organic (Oh) and mineral (Ah) soil layers
                      of a Norway spruce forest, using a recently developed
                      analytical method for the determination of soil NH2OH
                      content, combined with a geostatistical Kriging approach.
                      Potential soil N2O emission rates were determined by
                      laboratory incubations under oxic conditions, followed by
                      gas chromatographic analysis and complemented by ancillary
                      measurements of soil characteristics. Stepwise multiple
                      regressions demonstrated that the potential N2O emission
                      rates, NH2OH and nitrate (NO3−) content were spatially
                      highly correlated, with hotspots for all three parameters
                      observed in the headwater of a small creek flowing through
                      the sampling area. In contrast, soil ammonium (NH4+) was
                      only weakly correlated with potential N2O emission rates,
                      and was excluded from the multiple regression models. While
                      soil NH2OH content explained the potential soil N2O emission
                      rates best for both layers, also NO3− and Mn content
                      turned out to be significant parameters explaining N2O
                      formation in both soil layers. The Kriging approach was
                      improved markedly by the addition of the co-variable
                      information of soil NH2OH and NO3− content. The results
                      indicate that determination of soil NH2OH content could
                      provide crucial information for the prediction of the
                      spatial variability of soil N2O emissions.},
      cin          = {IBG-3},
      ddc          = {550},
      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:000371332900005},
      doi          = {10.1016/j.gca.2016.01.026},
      url          = {https://juser.fz-juelich.de/record/282911},
}