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@ARTICLE{Wang:874667,
      author       = {Wang, Yi and Wu, Bei and Berns, Anne E. and Bol, Roland and
                      Wombacher, Frank and Ellmer, Frank and Amelung, Wulf},
      title        = {{A} century of liming affects the {M}g isotopic composition
                      of the soil and crops in a long-term agricultural field at
                      {B}erlin-{D}ahlem, {G}ermany},
      journal      = {European journal of soil science},
      volume       = {72},
      number       = {1},
      issn         = {1351-0754},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {FZJ-2020-01583},
      pages        = {300-312},
      year         = {2021},
      abstract     = {Liming is widely used to alleviate soil acidity in western
                      and central Europe, but its role in the cycling of magnesium
                      (Mg) in arable soil–plant systems is still ambiguous.
                      Here, we systematically analysed Mg concentrations and the
                      natural Mg stable isotope compositions (δ26Mg) of two Mg
                      pools in soil profiles and a major crop (winter rye) in a
                      long‐term German agricultural experimental field that has
                      been managed with and without liming since 1923. The results
                      showed that the δ26Mg signatures of the bulk soil Mg pool
                      in the studied Albic Luvisol displayed limited variation
                      with depth and between the liming treatments. In contrast,
                      the exchangeable soil Mg pool exhibited an increase in
                      δ26Mg values with depth down to 50 cm, which was more
                      pronounced in the limed plots. We attributed this enrichment
                      of light Mg isotopes in upper layers to the Mg addition from
                      “Dolokorn 90” lime, as well as to the removal of heavy
                      Mg isotopes by plant uptake. The subsequent use of a simple
                      isotope‐mixing model suggested that only $25\%$ of the
                      remaining Mg in the soil exchangeable pool stemmed from the
                      last liming practice. The other parts of the exchangeable
                      soil Mg pool had either interacted with the bulk soil matrix
                      or had been utilized by the plants. Almost 100 years of
                      liming enhanced Mg uptake by the vegetation, probably via
                      elevated Mg contents in the grain, and reflected by the
                      stronger depletion of heavy Mg isotopes in the soil
                      exchangeable Mg pool relative to non‐limed plots. Whole
                      winter rye plants were enriched in heavy Mg isotopes but
                      they displayed similar Mg isotope compositions among plant
                      organs in all plots, indicating identical Mg uptake and
                      translocation strategies in the different trials. Tracing
                      the stable isotope compositions of soil and plant Mg thus
                      opens novel opportunities to evaluate soil management
                      impacts on the cycling and fate of this essential nutrient
                      in agricultural systems.},
      cin          = {IBG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {2173 - Agro-biogeosystems: controls, feedbacks and impact
                      (POF4-217)},
      pid          = {G:(DE-HGF)POF4-2173},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000521455400001},
      doi          = {10.1111/ejss.12951},
      url          = {https://juser.fz-juelich.de/record/874667},
}