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@ARTICLE{Nguyen:836749,
      author       = {Nguyen, Quan Van and Wu, Di and Kong, Xianwang and Bol,
                      Roland and Petersen, Søren O. and Jensen, Lars Stoumann and
                      Liu, Shurong and Brüggemann, Nicolas and Glud, Ronnie N.
                      and Larsen, Morten and Bruun, Sander},
      title        = {{E}ffects of cattle slurry and nitrification inhibitor
                      application on spatial soil {O} 2 dynamics and {N} 2 {O}
                      production pathways},
      journal      = {Soil biology $\&$ biochemistry},
      volume       = {114},
      issn         = {0038-0717},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2017-05802},
      pages        = {200 - 209},
      year         = {2017},
      abstract     = {Application of cattle slurry to grassland soil has
                      environmental impacts such as ammonia volatilization and
                      greenhouse gas emissions. The extent, however, depends on
                      application method and soil conditions through their effects
                      on infiltration and oxygen (O2) availability during
                      subsequent decomposition. Here, we applied O2 planar optode
                      and N2O isotopomer techniques to investigate the linkage
                      between soil O2 dynamics and N2O production pathways in
                      soils treated with cattle slurry (treatment CS) and tested
                      the effect of the nitrification inhibitor 3,4-dimethyl
                      pyrazole phosphate, DMPP (treatment CSD). Two-dimensional
                      planar optode images of soil O2 over time revealed that O2
                      depletion ultimately extended to 1.5 cm depth in CS, as
                      opposed to 1.0 cm in CSD. The 15N site preference (SP) and
                      δ18O of emitted N2O varied between 11-25‰ and 35–47‰,
                      respectively, indicating a mixture of production sources
                      during the incubation. An early peak of N2O emission
                      occurred in both manure treated soils by day 1, with the
                      highest SP values and δ18O-N2O indicating that fungal
                      denitrification of nitrate in the soil was the main
                      contributor to the early peak. During the first five days,
                      N2O fluxes in CS and CSD treatments were similar, and hence
                      nitrification did not influence N2O emissions for several
                      days under the experimental conditions of this study. The
                      second peak of N2O emission occurring only in CS peaking
                      around day 14, could be due to both nitrification and
                      bacterial denitrification of nitrate produced during
                      incubation. Over 18 days, the application of DMPP
                      substantially mitigated N2O emissions by $60\%$ compared to
                      untreated CS in the investigated system which in terms of
                      aeration status corresponded to wet or compacted grassland
                      soil. Using this novel combination of O2 planar optode
                      imaging and N2O isotopomer analysis, our results provide a
                      better understanding of the coupled O2 and N2O dynamics in
                      manure-amended soils, and they illustrate the roles of
                      bacterial and fungal denitrification in N2O production in
                      grassland soil under high soil water content.},
      cin          = {IBG-3},
      ddc          = {570},
      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:000411546600021},
      doi          = {10.1016/j.soilbio.2017.07.012},
      url          = {https://juser.fz-juelich.de/record/836749},
}