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Effects of earthworm (Metaphire guillelmi) addition on soil aggregate organic carbon content and clover root characteristics
  • Li Ma,
  • Mingan Shao,
  • Jing Li
Li Ma
Key Lab of Disaster Monitoring and Mechanism Simulating of Shaanxi Province

Corresponding Author:mali4166@163.com

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Mingan Shao
Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences
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Jing Li
Key Lab of Disaster Monitoring and Mechanism Simulating of Shaanxi Province
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Abstract

Earthworms can variously affect soil properties and resource availability by feeding, burrowing, and casting activities. Figuring out the relationship among earthworms, soil and plant properties is beneficial for understanding the ecological functions of earthworms. Different densities of earthworms (high density, HDE; medium density, MDE; low density, LDE; control, CK) in soil columns were studied to reveal how earthworms influence soil physical and chemical properties and clover plant growth. The results showed that earthworms increased the large and medium aggregate content and decreased the microaggregate content. Soil aggregates in MDE were the most stable. Both the mean mass diameter (MWD) and geometric mean diameter of soil aggregates increased with the densities of earthworms. The average contents of soil organic carbon (SOC) in large-, medium-, and micro-aggregates were 5.5, 4.2, and 4.2 g kg-1 in the treatments with earthworms. There was a significant correlation between SOC content and macroaggregate organic carbon content. The root characteristic values of earthworm-treated clover were significantly higher than those of the control. The clover root indexes were positively correlated with the SOC content and soil aggregates. We considered that earthworms altered the soil aggregate contents and promoted soil organic carbon storage, and thus promote the development of vegetation roots. This study provides scientific supports for a deeper understanding of the mechanism of earthworms on soil carbon storage.
22 Jan 2022Submitted to Land Degradation & Development
26 Jan 2022Submission Checks Completed
26 Jan 2022Assigned to Editor
09 Feb 2022Reviewer(s) Assigned
16 Feb 2022Review(s) Completed, Editorial Evaluation Pending
06 Mar 2022Editorial Decision: Revise Minor
26 Mar 20221st Revision Received
04 Apr 2022Submission Checks Completed
04 Apr 2022Assigned to Editor
11 Apr 2022Review(s) Completed, Editorial Evaluation Pending
14 May 2022Editorial Decision: Revise Major
23 May 20222nd Revision Received
25 May 2022Submission Checks Completed
25 May 2022Assigned to Editor
05 Jun 2022Review(s) Completed, Editorial Evaluation Pending
05 Jun 2022Editorial Decision: Revise Minor
06 Jun 20223rd Revision Received
07 Jun 2022Submission Checks Completed
07 Jun 2022Assigned to Editor
12 Jun 2022Review(s) Completed, Editorial Evaluation Pending
13 Jun 2022Editorial Decision: Revise Minor
20 Jun 20224th Revision Received
20 Jun 2022Submission Checks Completed
20 Jun 2022Assigned to Editor
25 Jun 2022Review(s) Completed, Editorial Evaluation Pending
25 Jun 2022Editorial Decision: Accept