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@ARTICLE{Hofmann:858641,
      author       = {Hofmann, Diana and Berns, Anne E. and Meyer, Nele and Bol,
                      Roland and Borchard, Nils and Abdelrahman, Hamada},
      title        = {{H}istorical charcoal additions alter water extractable,
                      particulate and bulk soil {C} composition and stabilization},
      journal      = {Journal of plant nutrition and soil science},
      volume       = {181},
      number       = {6},
      issn         = {0044-3263},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2018-07500},
      pages        = {809-817},
      year         = {2018},
      abstract     = {The objective of this work was to investigate the chemical
                      composition and thequantitative changes in soil organic
                      matter (SOM) fractions in response to multiple historical
                      inputs of charcoal that ceased >60 years ago. The topsoil
                      (0–5 cm) and subsoil(5–20 cm) samples of charcoal
                      enriched soils and the unamended reference soils
                      wereassessed for C and N contents in bulk soil, particulate
                      organic matter (POM) fractionsand water extractable organic
                      matter (WEOM). The SOM molecular characteristicswere
                      investigated in the solid phase by nuclear magnetic
                      resonance (NMR) and in theWEOM by Fourier transform ion
                      cyclotron resonance mass spectrometry (FT-ICR-MS).Formerly
                      added charcoal additions reduced the extracted amount of
                      WEOM and alteredPOM pattern: an increased proportion of C
                      and N stored in coarse, intermediate, andfine POM relative
                      to corresponding total C and N was found in subsoils. In
                      contrast, Cand N stored in the residual fraction (<20 μm)
                      decreased. NMR results revealed ahigher aromaticity of SOM
                      in charcoal enriched soils, while the FT-ICR-MS
                      resultsindicated an increased presence of lignin- and
                      tannin-like compounds in the WEOM ofthese soils. Former
                      charcoal additions enhanced soils capacity to retain and
                      stabilize Cand N. Particularly, the presence of charcoal
                      particles elevated C and N stored in largePOM fractions >20
                      μm, which presumably increases soil porosity and thus the
                      soils’capacity to retain water.},
      cin          = {IBG-3},
      ddc          = {640},
      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:000451906900001},
      doi          = {10.1002/jpln.201800261},
      url          = {https://juser.fz-juelich.de/record/858641},
}