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@ARTICLE{Hu:829873,
      author       = {Hu, Bin and Zhou, Minghua and Dannenmann, Michael and Saiz,
                      Gustavo and Simon, Judy and Bilela, Silvija and Liu, Xiping
                      and Hou, Lin and Chen, Hui and Zhang, Shuoxin and
                      Butterbach-Bahl, Klaus and Rennenberg, Heinz},
      title        = {{C}omparison of nitrogen nutrition and soil carbon status
                      of afforested stands established in degraded soil of the
                      {L}oess {P}lateau, {C}hina},
      journal      = {Forest ecology and management},
      volume       = {389},
      issn         = {0378-1127},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2017-03489},
      pages        = {46 - 58},
      year         = {2017},
      abstract     = {The Loess Plateau in China constitutes an area short of
                      soil nitrogen and organic carbon due to local land
                      degradation induced by various factors (i.e. long term
                      changes of land use, climate conditions, and soil
                      properties). The present study aimed to examine the effects
                      of species and land management by afforestation on tree N
                      acquisition capacity and soil N and C availability in
                      degraded soils of the Loess Plateau area. We quantified root
                      N uptake of inorganic and organic N sources as well as soil
                      N and C availability, both at the tree species (i.e. Robinia
                      pseudoacacia L., Juglans regia L. and Pinus tabulaeformis
                      Carr.) and the land management (i.e. arable vs. monoculture
                      vs. mixed afforested stands) levels. Our results indicated
                      that afforestation improved soil N and organic C
                      availabilities compared to abandoned arable land (p < 0.05).
                      In particular, the presence of N2-fixing R. pseudoacacia
                      enhanced root N concentrations (ca. 3.0 times) and soil NO3-
                      (ca. 5.4 times), soil total N (ca. 1.9 times) and organic C
                      (ca. 3.4 times) availabilities, but decreased soil NH4+ (ca.
                      $−33\%),$ microbial biomass carbon (ca. $−74\%)$ and
                      nitrogen (ca. $−54\%)$ in the mixed stand compared to J.
                      regia monoculture. Under the experimental conditions
                      applied, the afforested trees preferred organic over
                      inorganic N compounds as well as NO3− over NH4+; J. regia
                      in monoculture had a highest root amino acids N uptake
                      capacities (i.e. 76.6 ± 7.7 nmol N (g fw)−1 h−1 for
                      glutamine, 90.3 ± 8.9 nmol N (g fw)−1 h−1 for arginine)
                      compared to other tree species whereas such high uptake
                      capacities were largely repressed in the mixed stand with R.
                      pseudoacacia. Thus, in the Loess Plateau area, the
                      inter-planting system of J. regia with N2-fixing R.
                      pseudoacacia could improve the total soil N and organic C
                      pools as well as plant N cycling compared to traditional
                      arable land use and J. regia monoculture system. This study
                      shows that inter-planting R. pseudoacacia with economic
                      fruit trees can be considered a successful strategy for soil
                      regeneration by afforestation in future land management
                      projects.},
      cin          = {IBG-3},
      ddc          = {570},
      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},
      UT           = {WOS:000398868800005},
      doi          = {10.1016/j.foreco.2016.12.011},
      url          = {https://juser.fz-juelich.de/record/829873},
}