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Subsurface organic amendment with plastic film mulching reinforced soil organic carbon through altering saline soil aggregate structure and regulating fungal community
  • +4
  • Hongyuan Zhang,
  • Huancheng Pang,
  • Jiashen Song,
  • Fangdi Chang,
  • Jing Wang,
  • Yitao Zhang,
  • Li Yuyi
Hongyuan Zhang
Chinese Academy of Agricultural Sciences Institute of Agricultural Resources and Regional Planning

Corresponding Author:[email protected]

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Huancheng Pang
Chinese Academy of Agricultural Sciences Institute of Agricultural Resources and Regional Planning
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Jiashen Song
Chinese Academy of Agricultural Sciences Institute of Agricultural Resources and Regional Planning
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Fangdi Chang
Chinese Academy of Agricultural Sciences Institute of Agricultural Resources and Regional Planning
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Jing Wang
Chinese Academy of Agricultural Sciences Institute of Agricultural Resources and Regional Planning
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Yitao Zhang
Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences
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Li Yuyi
Chinese Academy of Agricultural Sciences Institute of Agricultural Resources and Regional Planning
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Abstract

The combination of plastic film mulching and subsurface organic amendment is a novel strategy for saline soil amelioration and utilization in China. However, how the strategy affect soil organic carbon (SOC) contents directly and indirectly (physical protection and microbiological regulation) were still not-documented. Therefore, four treatments, i.e., no amendment with and without plastic film mulching, subsurface (10-30 cm soil depth) organic amendment with and without plastic film mulching, were arranged and sampled after three-year filed experiment. Compared with no amendment with and without plastic film mulching, subsurface organic amendment increased the SOC content in the 0-40 cm soil depth by 70% and 90%, respectively. Plastic film mulching decreased SOC by 16% without organic amendment. Subsurface organic amendment transformed the dominant aggregation particles from <0.053 mm to 0.25-2 mm, indicating that both direct carbon input and indirect physical protection contributed to SOC increment. Conversely, SOC decreased with plastic film mulching due to the 14% lower fungal diversity compared with soil without plastic film mulching, was supported by the positive path coefficient from fungal diversity to SOC. Therefore, the combination of plastic film mulching and subsurface organic amendment increased SOC by 61% by direct carbon input and indirect physical protection and microbial regulation. In conclusion, subsurface organic amendment with plastic film mulching reinforced soil organic carbon increment through altering saline soil aggregate structure and regulating fungal community, and confirmed it is a feasible way to increase SOC for saline soil amelioration.
31 Dec 2021Submitted to Land Degradation & Development
03 Jan 2022Submission Checks Completed
03 Jan 2022Assigned to Editor
03 Jan 2022Reviewer(s) Assigned
17 Feb 2022Review(s) Completed, Editorial Evaluation Pending
20 Feb 2022Editorial Decision: Revise Major
21 Mar 20221st Revision Received
22 Mar 2022Submission Checks Completed
22 Mar 2022Assigned to Editor
25 Mar 2022Review(s) Completed, Editorial Evaluation Pending
26 Mar 2022Editorial Decision: Revise Minor
07 Apr 20222nd Revision Received
08 Apr 2022Submission Checks Completed
08 Apr 2022Assigned to Editor
10 Apr 2022Review(s) Completed, Editorial Evaluation Pending
10 Apr 2022Editorial Decision: Revise Minor
22 Apr 20223rd Revision Received
25 Apr 2022Submission Checks Completed
25 Apr 2022Assigned to Editor
30 Apr 2022Review(s) Completed, Editorial Evaluation Pending
30 Apr 2022Editorial Decision: Accept