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@ARTICLE{Ge:902937,
      author       = {Ge, Zhuang and Li, Shuangyi and Bol, Roland and Zhu, Ping
                      and Peng, Chang and An, Tingting and Cheng, Na and Liu, Xu
                      and Li, Tingyu and Xu, Zhiqiang and Wang, Jingkuan},
      title        = {{D}ifferential long-term fertilization alters
                      residue-derived labile organic carbon fractions and
                      microbial community during straw residue decomposition},
      journal      = {Soil $\&$ tillage research},
      volume       = {213},
      issn         = {0167-1987},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2021-04690},
      pages        = {105120 -},
      year         = {2021},
      abstract     = {Straw residue amendment and fertilization are the key
                      global management strategies for achieving more sustainable
                      agriculture. However, the temporal changes in labile soil
                      organic carbon (SOC) fractions and microbial community (MB)
                      in response to differential long-term fertilization during
                      straw residue decomposition remain unclear. We collected
                      topsoil samples (0–20 cm; Mollisols) from three
                      fertilizer management strategies (CK, no fertilization
                      control, IF, inorganic fertilizer, and IFM, inorganic
                      fertilizer plus manure) in a long-term field experiment.
                      Subsequently, we conducted an in-situ micro-plot incubation
                      experiment with and without 13C-labeled maize straw residue
                      (δ13C = 246.9‰). We found that the straw-residue C in
                      soil was mainly retained as particulate organic carbon
                      (POC). The residue-derived POC was significantly increased,
                      by 3, 5, and 20 times, whereas the residue-derived dissolved
                      organic carbon (DOC) was significantly decreased by 71 $\%,$
                      57 $\%,$ and 95 $\%$ in CK, IF, and IFM treatments,
                      respectively, with straw addition (abbreviated as CKS, IFS,
                      and IFMS respectively) during straw residue decomposition.
                      The content of residue-derived microbial biomass carbon
                      (MBC) was higher at 40.6 mg kg−1 (IFMS) and
                      33.0 mg kg−1 (IFS) compared to 27.0 mg kg−1 in
                      the unfertilized (CKS) treatment at the end of the
                      incubation period (day 150). The number of edges of the
                      bacterial network was decreased by 16 $\%,$ 53 $\%,$ and 73
                      $\%$ in the treatments of CKS, IFS, and IFMS, respectively,
                      compared with the corresponding fertilizer treatments
                      without straw application. While the number of edges of
                      fungal network also decreased by 57 $\%$ in CKS treatment,
                      those in IFS and IFMS treatments increased by 160 $\%$ and
                      310 $\%,$ respectively. This indicated that straw residue
                      addition decreases the bacterial microbial network
                      complexity in all treatments, but it increases fungal
                      network complexity in IFS and IFMS treatments. The highest
                      microbial activities of the bacterial and fungal keystone
                      taxa were observed on the 1 st day in the IFS treatment
                      and on the 150th day in the CKS treatment. However, the
                      highest microbial activities of bacterial keystone taxa were
                      observed on the 60th day, and the highest microbial
                      activities of fungal keystone taxa were detected on the
                      150th day in the IFMS treatment. The observed temporal
                      changes in the microbial community suggested that
                      independent of agricultural fertilizer management, straw
                      residue-derived POC and DOC promoted fungal C processing,
                      whereas for bacterial C, this was facilitated only by straw
                      residue-derived MBC in these Mollisols. Highlighting straw
                      residue incorporation helps to sustain microbial diversity
                      and associated carbon processing in agricultural soils.},
      cin          = {IBG-3},
      ddc          = {640},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {2173 - Agro-biogeosystems: controls, feedbacks and impact
                      (POF4-217)},
      pid          = {G:(DE-HGF)POF4-2173},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000687980700001},
      doi          = {10.1016/j.still.2021.105120},
      url          = {https://juser.fz-juelich.de/record/902937},
}