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Influences of land reclamation on soil bacterial communities of abandoned salt pans in the Yellow River Delta
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  • Yihao Zhu,
  • Xiliang Song,
  • Xiaoli Liu,
  • Weifeng Chen,
  • Xuchang Niu,
  • Weizhi Zhou
Yihao Zhu
Shandong Agricultural University

Corresponding Author:[email protected]

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Xiliang Song
Shandong Agricultural University
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Xiaoli Liu
Shandong Provincial Land Space and Ecological Restoration Center
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Weifeng Chen
Shandong Agricultural University
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Xuchang Niu
Shandong Agricultural University
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Weizhi Zhou
Shandong University
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Reclamation has been widely accepted to restore abandoned lands. Most studies focused on the improvement of land reclamation in soil nutrients and microbial activities. However, the effects of reclamation time on bacterial communities of abandoned salt pans are still unclear. The object of this study is to: i) assess the successional change of soil physicochemical properties and bacterial communities in reclaimed abandoned salt pans with different reclamation histories, and ii) figure out the main limit factors on the improvement of soil quality in reclaimed abandoned salt pans. The soils in a farmland (RTBL) and six abandoned salt pans with 1 year (RT1), 2 years (RT2), 3 years (RT3), 4 years (RT4), 8 years (RT8), and 9 years (RT9) of reclamation were sampled to investigate the temporal variation of soil properties, heavy metal content, bacterial community composition, and diversity. Results showed that the soil bulk density (BD), total dissolved salt (SS), median particle size (MMAD) decreased with the increase of reclamation time, while soil nutrient (soil organic matter, total nitrogen, available phosphorus, available potassium) showed an opposite trend. The bacterial α-diversity increased first, then decrease. Land reclamation enhanced the relative abundances of Acidobacteria, Chloroflexi, and Actinobacteria but reduced the relative abundances of Proteobacteria, Gemmatimonadetes, and Bacteroidetes. Compared with RTBL, the soil nutrients and bacterial community structure in RT1, RT2, RT3, and RT4 showed a significant difference.Therefore, reclamation time is a vital driving force for restoring soil physicochemical properties and bacterial communities in abandoned
08 Aug 2021Submitted to Land Degradation & Development
10 Aug 2021Submission Checks Completed
10 Aug 2021Assigned to Editor
14 Aug 2021Reviewer(s) Assigned
01 Dec 2021Review(s) Completed, Editorial Evaluation Pending
26 Dec 2021Editorial Decision: Revise Major
29 Dec 20211st Revision Received
30 Dec 2021Submission Checks Completed
30 Dec 2021Assigned to Editor
28 May 2022Review(s) Completed, Editorial Evaluation Pending
29 May 2022Editorial Decision: Accept
Oct 2022Published in Land Degradation & Development volume 33 issue 16 on pages 3231-3244. 10.1002/ldr.4384