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@ARTICLE{Wang:820882,
      author       = {Wang, Milan and Hu, Ronggui and Zhao, Jinsong and Kuzyakov,
                      Yakov and Liu, Shurong},
      title        = {{I}ron oxidation affects nitrous oxide emissions via
                      donating electrons to denitrification in paddy soils},
      journal      = {Geoderma},
      volume       = {271},
      issn         = {0016-7061},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2016-06146},
      pages        = {173 - 180},
      year         = {2016},
      abstract     = {Paddy soils are important source of nitrous oxide (N2O),
                      which production is mainly regulated through redox processes
                      and electron transfer. Ferrous iron [Fe(II)] oxidation
                      coupled to denitrification is ubiquitous in paddy soils,
                      which could affect N2O production via donating electrons to
                      denitrification. To clarify the effects of Fe(II) oxidation
                      on denitrification and N2O emissions, a flooding experiment
                      was conducted in two paddy soils with contrasting Fe(II)
                      levels. The soil with high Fe(II) concentration emitted less
                      N2O than did the other soil with low Fe(II) concentration.
                      Nitrate addition decreased Fe(II) concentration and
                      stimulated N2O production in both soils, suggesting that
                      Fe(II) oxidation is coupled to denitrification. The
                      stoichiometry of electron transfer between nitrate reduction
                      and Fe(II) oxidation demonstrated that the percentage of
                      electrons contributed by Fe(II) to denitrification accounted
                      for $16.2\%$ and $32.9\%,$ and the ratios of the electrons
                      donated by Fe(II) to the electrons accepted by nitrate for
                      N2O production were $43.7\%$ and $130.7\%$ in the two soils
                      with low and high Fe(II) concentration, respectively. The
                      ratio beyond $100\%$ implies that the electrons donated by
                      high Fe(II) concentration exceed the electron demand for N2O
                      production, which lead to the further reduction of N2O to
                      N2. In conclusion, Fe(II) oxidation coupled to
                      denitrification affects N2O emissions via electron donation,
                      and Fe(II) in a high concentration bears great potential for
                      efficient denitrification and low N2O emissions from paddy
                      soils.},
      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:000373541800019},
      doi          = {10.1016/j.geoderma.2016.02.022},
      url          = {https://juser.fz-juelich.de/record/820882},
}