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@ARTICLE{Kruse:887796,
      author       = {Kruse, Jens and Koch, Maximilian and Khoi, Chau Minh and
                      Braun, Gianna and Sebesvari, Zita and Amelung, Wulf},
      title        = {{L}and use change from permanent rice to alternating
                      rice-shrimp or permanent shrimp in the coastal {M}ekong
                      {D}elta, {V}ietnam: {C}hanges in the nutrient status and
                      binding forms},
      journal      = {The science of the total environment},
      volume       = {703},
      issn         = {0048-9697},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2020-04426},
      pages        = {134758 -},
      year         = {2020},
      abstract     = {Saline water intrusion has become a severe threat in the
                      coastal areas of Mekong delta of Vietnam, though offering
                      farmers the option to diversify their land use, and
                      switching, for instance, from permanent rice to alternating
                      rice-shrimp systems or even to permanent shrimp systems. The
                      objective of this study was to evaluate the respective
                      impacts on soil salinity, nutrient status and their binding
                      forms. Hence, we sampled the topsoils (cultivation layer,
                      0–15 cm) from 10 permanent rice systems and the rice
                      platforms of 10 alternating riceshrimp systems. Furthermore,
                      the sludges and the soils 10 cm underneath of the sludges
                      from the ditches of the alternating rice-shrimp as well as
                      from ponds of the permanent shrimp systems were sampled in
                      Bến Tre and Sóc Trăng provinces, Vietnam, respectively.
                      The samples were analyzed regarding their electric
                      conductivity, total and plant-available nutrient contents.
                      To reveal possible changes in nutrient binding forms,
                      sequential P and S extraction, 31P-nuclear magnetic
                      resonance spectroscopy, and S and P X-ray absorption near
                      edge structure spectroscopy were applied. The results showed
                      that permanent and alternating shrimp cultivation lead to
                      elevated salt concentrations but also improved the overall
                      nutrient status relative to the permanent rice management
                      and especially in the sludges relative to the soils
                      underneath. The continued deposition of shrimp and feed
                      debris promoted the accrual of stable, Ca- and Mg-associated
                      P forms as well as of P-monoesters, whereas the S forms were
                      depleted in thiophene S groups but enriched in sulfides
                      relative to permanent rice fields. As effects by alternating
                      rice-shrimp management were intermediate, this management
                      has more potential to serve as a no-regret strategy for
                      farmers to remain flexible in their response to climate
                      changes and concurrent salinity intrusion relative to
                      permanent shrimp production, which requires strict
                      maintenance of adequate salinity levels also during the
                      rainy season.},
      cin          = {IBG-3},
      ddc          = {610},
      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},
      pubmed       = {31767321},
      UT           = {WOS:000505924300098},
      doi          = {10.1016/j.scitotenv.2019.134758},
      url          = {https://juser.fz-juelich.de/record/887796},
}