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@PHDTHESIS{Wagner:872979,
      author       = {Wagner, Katrin Xin Xin},
      title        = {{I}mpact {A}ssessment of {L}and-{U}se {C}hange and
                      {A}gricultural {T}reatments on {G}reenhouse {G}as
                      {E}missions from {W}etlands of {U}ganda and {T}anzania},
      volume       = {483},
      school       = {Universität Bonn},
      type         = {Dr.},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {FZJ-2020-00436},
      isbn         = {978-3-95806-447-8},
      series       = {Schriften des Forschungszentrums Jülich Reihe Energie $\&$
                      Umwelt / Energy $\&$ Environment},
      pages        = {144 S.},
      year         = {2019},
      note         = {Dissertation, Universität Bonn, 2019},
      abstract     = {Wetlands play an important role in global climate
                      regulation as they represent a great global carbon sink.
                      Moreover, wetlands provide optimal conditions for food
                      production and support the livelihoods of many people in
                      Sub-Saharan Africa with food supply. The conversion of
                      natural wetland areas to farmland seriously affects valuable
                      ecosystem services, including global climate regulation, and
                      can result in altered greenhouse gas(GHG) emissions.
                      Therefore, a main challenge of sustainable wetland
                      management is to find a reconciliation between food
                      production and mitigation of GHG emissions. For the
                      development of management recommendations, GHG emission data
                      from wetlands in Sub-Saharan Africa are highly needed,
                      because the numbers of GHG studies conducted in this region
                      are low. This study aimed to reduce this knowledge gap and
                      assessed GHG emissions from wetlands in East Africa with
                      consideration of contrasting wetland types, different types
                      of land use and different hydrological positions within the
                      wetland. Moreover, different agricultural treatments were
                      evaluated with respect to their effects on yield-based GHG
                      emissions. Two field experiments were established in
                      different wetland types in East Africa. The first test site
                      was located in an inland valley wetland in Uganda,while the
                      second one was located in a floodplain of the Kilombero
                      river in Tanzania. CH$_{4}$,CO$_{2}$ and N$_{2}$O emission
                      data were collected with static chambers for a total
                      samplingperiod of two consecutive cropping and fallow
                      periods. During data analysis, a lack of systematic quality
                      assurance of GHG data from static chamber measurements
                      became apparent. Thus, an eight-step data quality management
                      system based on objective criteria was developed to ensure
                      data reliability and improve data acceptance rates. The
                      quality-checked results of this study confirmed that
                      land-use change had a significant impact on GHG emissions,
                      as the global warming potential (GWP) considerably
                      increasedafter the conversion of natural wetlands to
                      farmland. Moreover, this study showed that intensification
                      of food production did not result in significantly higher
                      yield-based GHG emissions. Intensive cropping treatments
                      with fertilizer application showed equally high or even
                      lower global warming potential indexes (GWPI) compared to
                      non-fertilized treatments. In conclusion, intensive cropping
                      management practices with high yield potentials represent a
                      possible trade-off between food production and GHG
                      emissions. However, to achieve GHG emission mitigation, a
                      combination with natural wetland areas spared from
                      agricultural production is essential.},
      cin          = {IBG-3},
      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)3 / PUB:(DE-HGF)11},
      urn          = {urn:nbn:de:0001-2020012939},
      url          = {https://juser.fz-juelich.de/record/872979},
}