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@ARTICLE{Amelung:838405,
      author       = {Amelung, Wulf and Cade-Menun, Barbara J. and Bol, Roland
                      and Willbold, Sabine and Cao, Zhihong and Klumpp, Erwin and
                      Jiang, Xiaoqian},
      title        = {{S}oil organic phosphorus transformations during 2000 years
                      of paddy-rice and non-paddy management in the {Y}angtze
                      {R}iver {D}elta, {C}hina},
      journal      = {Scientific reports},
      volume       = {7},
      number       = {1},
      issn         = {2045-2322},
      address      = {London},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2017-07017},
      pages        = {10818},
      year         = {2017},
      abstract     = {The contents and properties of soil organic phosphorus (Po)
                      largely drive ecosystem productivity with increasing
                      development of natural soil. We hypothesized that soil Po
                      would initially increase with paddy management and then
                      would persist under steady-state conditions. We analyzed
                      soils from a 2000-year chronosequence of a rice-wheat
                      rotation and an adjacent non-paddy 700-year chronosequence
                      in Bay of Hangzhou (China) for their Po composition using
                      solution 31P-NMR after NaOH-EDTA extraction. Land
                      reclamation promoted Po accumulation in both paddy and
                      non-paddy topsoils (depths ≤ 18 cm) until
                      steady-state equilibria were reached within 200 years of
                      land use. Greater Po concentrations were found, however, in
                      the non-paddy subsoils than in those under paddy management.
                      Apparently, the formation of a dense paddy plough pan
                      hindered long-term Po accumulation in the paddy subsoil. The
                      surface soils showed higher proportions of orthophosphate
                      diesters under paddy than under non-paddy management, likely
                      reflecting suppressed decomposition of crop residues despite
                      elevated microbial P compounds stocks under anaerobic
                      paddy-rice management. Intriguingly, the composition of Po
                      was remarkably stable after 194-years of paddy management
                      and 144-years of non-paddy management, suggesting novel
                      steady-state equilibria of P dynamics had been reached in
                      these man-made ecosystems after less than two centuries.},
      cin          = {IBG-3 / ZEA-3},
      ddc          = {000},
      cid          = {I:(DE-Juel1)IBG-3-20101118 / I:(DE-Juel1)ZEA-3-20090406},
      pnm          = {255 - Terrestrial Systems: From Observation to Prediction
                      (POF3-255)},
      pid          = {G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:28883643},
      UT           = {WOS:000409561800069},
      doi          = {10.1038/s41598-017-10071-0},
      url          = {https://juser.fz-juelich.de/record/838405},
}