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@ARTICLE{Bauer:21231,
      author       = {Bauer, J. and Weihermueller, L. and Huisman, J.A. and
                      Herbst, M. and Graf, A. and Sequaris, J.M. and Vereecken,
                      H.},
      title        = {{I}nverse determination of heterotrophic soil respiration
                      response to temperature and water content under field
                      conditions},
      journal      = {Biogeochemistry},
      volume       = {108},
      number       = {1-3},
      issn         = {0168-2563},
      address      = {New York, NY},
      publisher    = {JSTOR},
      reportid     = {PreJuSER-21231},
      pages        = {119-134},
      year         = {2012},
      note         = {This research was supported by the German Research
                      Foundation DFG (Transregional Collaborative Research Centre
                      32-Patterns in Soil-Vegetation-Atmosphere systems:
                      monitoring, modelling and data assimilation), TERENO
                      (Terrestrial Environmental Observatories) of the Helmholtz
                      Gemeinschaft and by the Hessian initiative for the
                      development of scientific and economic excellence (LOEWE) at
                      the Biodiversity and Climate Research Centre (BiK-F),
                      Frankfurt/Main. We thank Axel Knaps and Rainer Harms for
                      providing the climate data. The organic carbon content of
                      the soil was analysed by the Central Division of Analytical
                      Chemistry at the Forschungszentrum Julich GmbH. We would
                      like to thank Claudia Walraf and Stefan Masjoshustmann for
                      the physical fractionation of the soil samples and Ludger
                      Bornemann (Institute of Crop Science and Resource
                      Conservation-Division of Soil Science, University of Bonn)
                      for the analysis of black carbon. We are grateful to Horst
                      Hardelauf for modifications of the model source code.
                      Furthermore, we thank three anonymous reviewers for their
                      helpful advices.},
      abstract     = {Heterotrophic soil respiration is an important flux within
                      the global carbon cycle. Exact knowledge of the response
                      functions for soil temperature and soil water content is
                      crucial for a reliable prediction of soil carbon turnover.
                      The classical statistical approach for the in situ
                      determination of the temperature response (Q(10) or
                      activation energy) of field soil respiration has been
                      criticised for neglecting confounding factors, such as
                      spatial and temporal changes in soil water content and soil
                      organic matter. The aim of this paper is to evaluate an
                      alternative method to estimate the temperature and soil
                      water content response of heterotrophic soil respiration.
                      The new method relies on inverse parameter estimation using
                      a 1-dimensional CO2 transport and carbon turnover model.
                      Inversion results showed that different formulations of the
                      temperature response function resulted in estimated response
                      factors that hardly deviated over the entire range of soil
                      water content and for temperature below 25A degrees C. For
                      higher temperatures, the temperature response was highly
                      uncertain due to the infrequent occurrence of soil
                      temperatures above 25A degrees C. The temperature
                      sensitivity obtained using inverse modelling was within the
                      range of temperature sensitivities estimated from
                      statistical processing of the data. It was concluded that
                      inverse parameter estimation is a promising tool for the
                      determination of the temperature and soil water content
                      response of soil respiration. Future synthetic model studies
                      should investigate to what extent the inverse modelling
                      approach can disentangle confounding factors that typically
                      affect statistical estimates of the sensitivity of soil
                      respiration to temperature and soil water content.},
      keywords     = {J (WoSType)},
      cin          = {IBG-3},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Environmental Sciences / Geosciences, Multidisciplinary},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000300659300009},
      doi          = {10.1007/s10533-011-9583-1},
      url          = {https://juser.fz-juelich.de/record/21231},
}