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@ARTICLE{Li:902945,
      author       = {Li, Fayong and Zhang, Qian and Klumpp, Erwin and Bol,
                      Roland and Nischwitz, Volker and Ge, Zhuang and Liang,
                      Xinqiang},
      title        = {{O}rganic {C}arbon {L}inkage with {S}oil {C}olloidal
                      {P}hosphorus at {R}egional and {F}ield {S}cales: {I}nsights
                      from {S}ize {F}ractionation of {F}ine {P}articles},
      journal      = {Environmental science $\&$ technology},
      volume       = {55},
      number       = {9},
      issn         = {0013-936X},
      address      = {Columbus, Ohio},
      publisher    = {American Chemical Society},
      reportid     = {FZJ-2021-04698},
      pages        = {5815 - 5825},
      year         = {2021},
      abstract     = {Nano and colloidal particles (1–1000 nm) play important
                      roles in phosphorus (P) migration and loss from agricultural
                      soils; however, little is known about their relative
                      distribution in arable crop soils under varying agricultural
                      geolandscapes at the regional scale. Surface soils (0–20
                      cm depth) were collected from 15 agricultural fields,
                      including two sites with different carbon input strategies,
                      in Zhejiang Province, China, and water-dispersible
                      nanocolloids (0.6–25 nm), fine colloids (25–160 nm), and
                      medium colloids (160–500 nm) were separated and analyzed
                      using the asymmetrical flow field flow fractionation
                      technique. Three levels of fine-colloidal P content
                      (3583–6142, 859–2612, and 514–653 μg kg–1) were
                      identified at the regional scale. The nanocolloidal fraction
                      correlated with organic carbon (Corg) and calcium (Ca), and
                      the fine colloidal fraction with Corg, silicon (Si),
                      aluminum (Al), and iron (Fe). Significant linear
                      relationships existed between colloidal P and Corg, Si, Al,
                      Fe, and Ca and for nanocolloidal P with Ca. The organic
                      carbon controlled colloidal P saturation, which in turn
                      affected the P carrier ability of colloids. Field-scale
                      organic carbon inputs did not change the overall
                      morphological trends in size fractions of water-dispersible
                      colloids. However, they significantly affected the peak
                      concentration in each of the nano-, fine-, and
                      medium-colloidal P fractions. Application of chemical
                      fertilizer with carbon-based solid manure and/or modified
                      biochar reduced the soil nano-, fine-, and medium-colloidal
                      P content by $30–40\%;$ however,the application of
                      chemical fertilizer with biogas slurry boosted colloidal P
                      formation. This study provides a deep and novel
                      understanding of the forms and composition of colloidal P in
                      agricultural soils and highlights their spatial regulation
                      by soil characteristics and carbon inputs.},
      cin          = {IBG-3},
      ddc          = {333.7},
      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},
      pubmed       = {pmid:33856195},
      UT           = {WOS:000648515400022},
      doi          = {10.1021/acs.est.0c07709},
      url          = {https://juser.fz-juelich.de/record/902945},
}