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@ARTICLE{Znaidi:887693,
      author       = {Znaidi, Ahlem and Brahim, Nadhem and Ibrahim, Hatem and
                      Bol, Roland and Chaouachi, Maher},
      title        = {{C}omparison of organic carbon stock of {R}egosols under
                      two different climates and land use in {T}unisia},
      journal      = {Arabian journal of geosciences},
      volume       = {13},
      number       = {19},
      issn         = {1866-7538},
      address      = {Heidelberg},
      publisher    = {Springer},
      reportid     = {FZJ-2020-04354},
      pages        = {1011},
      year         = {2020},
      abstract     = {Drylands are affected by desertification and by a serious
                      process of degradation. Studying the properties of their
                      soils and their carbon sequestration characteristics is a
                      key step as a major contribution for their conservation to
                      cope with the global warming issue. Considering the
                      geographical position of Tunisia, most of its territory is
                      in the dryland zone with a deficit in water balance, and
                      half of its area is only occupied by Lithosols and Regosols.
                      These soils and despite their existence in dry climates are
                      either pastureland or agricultural land, they play a
                      considerable role for the peasants; however, their organic
                      carbon stocks remain little studied and not well known. The
                      present work focuses on the state of the carbon stock in the
                      Regosols of Tunisia. Two study sites were studied; the first
                      was a Regosol in Gafsa under arid climate, the second,
                      another Regosol in Kairouan under semiarid climate. In these
                      two sites, we also have two different modes of land use. In
                      fact, in each site, we have a plot in an olive grove
                      adjacent to another in a pastoral mode. Results showed that
                      soil particle size, pH, and bulk density were very close.
                      The difference was observed in the content of organic carbon
                      and therefore in organic carbon stock. In olive groves, the
                      organic carbon stocks of the soil, 1-m deep, were 8.22 (±
                      0.72) Kg·C·m-2 in Gafsa and 12 (± 0.46) Kg·C·m-2 in
                      Kairouan. This increase mainly concerned the surface layers
                      (0–20 cm) and the deepest layers (80–100 cm). By
                      comparing the carbon stocks of soils under olive groves with
                      those under pasture, the gain in 15 years varied between
                      1.48 and 2.46 Kg·C·m-2. These results prove the low
                      organic matter content of Regosols from North Africa, but on
                      the other hand, their great capacity to sequester organic
                      carbon. These same soils, if organically amended, could be
                      fertile and productive soils, but also, could act as a
                      carbon sink to cope with global warming.},
      cin          = {IBG-3},
      ddc          = {550},
      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:000574573400008},
      doi          = {10.1007/s12517-020-06011-4},
      url          = {https://juser.fz-juelich.de/record/887693},
}