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@ARTICLE{Han:857171,
      author       = {Han, Xiao and Xu, Cong and Dungait, Jennifer A. J. and Bol,
                      Roland and Wang, Xiaojie and Wu, Wenliang and Meng, Fanqiao},
      title        = {{S}traw incorporation increases crop yield and soil organic
                      carbon sequestration but varies under different natural
                      conditions and farming practices in {C}hina: a system
                      analysis},
      journal      = {Biogeosciences},
      volume       = {15},
      number       = {7},
      issn         = {1726-4189},
      address      = {Katlenburg-Lindau [u.a.]},
      publisher    = {Copernicus},
      reportid     = {FZJ-2018-06408},
      pages        = {1933 - 1946},
      year         = {2018},
      abstract     = {Loss of soil organic carbon (SOC) from agricultural soils
                      is a key indicator of soil degradation associated with
                      reductions in net primary productivity in crop production
                      systems worldwide. Technically simple and locally
                      appropriate solutions are required for farmers to increase
                      SOC and to improve cropland management. In the last 30years,
                      straw incorporation (SI) has gradually been implemented
                      across China in the context of agricultural intensification
                      and rural livelihood improvement. A meta-analysis of data
                      published before the end of 2016 was undertaken to
                      investigate the effects of SI on crop production and SOC
                      sequestration. The results of 68 experimental studies
                      throughout China in different edaphic conditions, climate
                      regions and farming regimes were analyzed. Compared with
                      straw removal (SR), SI significantly sequestered SOC
                      (0–20cm depth) at the rate of 0.35 $(95\%$ CI,
                      0.31–0.40)Mg Cha−1yr−1, increased crop grain yield by
                      $13.4\%$ $(9.3–18.4\%)$ and had a conversion efficiency of
                      the incorporated straw C of $16\%±2\%$ across China. The
                      combined SI at the rate of 3Mg Cha−1yr−1 with mineral
                      fertilizer of 200–400kg Nha−1yr−1 was demonstrated to
                      be the best farming practice, where crop yield increased by
                      $32.7\%$ $(17.9–56.4\%)$ and SOC sequestrated by the rate
                      of 0.85 (0.54–1.15)Mg Cha−1yr−1. SI achieved a higher
                      SOC sequestration rate and crop yield increment when applied
                      to clay soils under high cropping intensities, and in areas
                      such as northeast China where the soil is being degraded.
                      The SOC responses were highest in the initial starting phase
                      of SI, then subsequently declined and finally became
                      negligible after 28–62 years. However, crop yield
                      responses were initially low and then increased, reaching
                      their highest level at 11–15 years after SI. Overall, our
                      study confirmed that SI created a positive feedback loop of
                      SOC enhancement together with increased crop production, and
                      this is of great practical importance to straw management as
                      agriculture intensifies both in China and other regions with
                      different climate conditions.},
      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:000429104900003},
      doi          = {10.5194/bg-15-1933-2018},
      url          = {https://juser.fz-juelich.de/record/857171},
}