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Temporal Variation of Earthworm Impacts on Soil Organic Carbon under Different Tillage Systems

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  • Yafei Guo

    (Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
    Department of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China)

  • Xiaoping Zhang

    (Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China)

  • Yan Zhang

    (Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
    Department of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China)

  • Donghui Wu

    (Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China)

  • Neil McLaughlin

    (Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON K1A0C6, Canada)

  • Shixiu Zhang

    (Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China)

  • Xuewen Chen

    (Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China)

  • Shuxia Jia

    (Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China)

  • Aizhen Liang

    (Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
    Department of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China)

Abstract

Previous research has shown the varied effect of earthworms on soil carbon dynamics. We carried out a 180-day incubation experiment with earthworms and maize residue additions under conventional tillage (CT) and no tillage (NT) system conditions to quantify the earthworm effect in the black soil of northeastern China. Earthworms did not affect soil CO 2 emissions, while residue addition significantly increased such emissions. The effects of earthworms on dissolved organic carbon (DOC) and microbial biomass carbon (MBC) gradually weakened with time in CT with and without residue addition, but gradually increased with time in NT with residue addition. In the CT system, earthworms accelerated the soil organic carbon (SOC) mineralization; and the newly added residue decomposed into SOC. In the NT system, earthworms accelerated the decomposition of native residues increasing the SOC content; this increase in decomposition rates by earthworms was greater than the inhibitory effect imposed by the addition of the new residue. Earthworms and residues combine to play a single role in CT and NT. This result will help in the understanding of the role of earthworms and residue in SOC dynamics, and in the development of management strategies to improve SOC.

Suggested Citation

  • Yafei Guo & Xiaoping Zhang & Yan Zhang & Donghui Wu & Neil McLaughlin & Shixiu Zhang & Xuewen Chen & Shuxia Jia & Aizhen Liang, 2019. "Temporal Variation of Earthworm Impacts on Soil Organic Carbon under Different Tillage Systems," IJERPH, MDPI, vol. 16(11), pages 1-18, May.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:11:p:1908-:d:235559
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    References listed on IDEAS

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    1. Ingrid M. Lubbers & Kees Jan van Groenigen & Steven J. Fonte & Johan Six & Lijbert Brussaard & Jan Willem van Groenigen, 2013. "Greenhouse-gas emissions from soils increased by earthworms," Nature Climate Change, Nature, vol. 3(3), pages 187-194, March.
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    Cited by:

    1. Xiaolian Zhang & Xiuguo Wang & Yalei Liu & Kuan Fang & Tong Liu, 2020. "The Toxic Effects of Sulfoxaflor Induced in Earthworms ( Eisenia fetida ) under Effective Concentrations," IJERPH, MDPI, vol. 17(5), pages 1-14, March.

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