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Differences in Carbon Sequestration Ability of Diverse Tartary Buckwheat Genotypes in Barren Soil Caused by Microbial Action

Author

Listed:
  • Wei Chen

    (School of Geographical Science, Shanxi Normal University, Taiyuan 030031, China)

  • Zhiwei Zhang

    (School of Geographical Science, Shanxi Normal University, Taiyuan 030031, China)

  • Congjian Sun

    (School of Geographical Science, Shanxi Normal University, Taiyuan 030031, China)

Abstract

Planting plants to increase soil carbon input has been widely used to achieve carbon neutrality goals. Tartary buckwheat not only has good barren tolerance but is also rich in nutrients and very suitable for planting in barren areas. However, the effects of different genotypes of Tartary buckwheat roots and rhizosphere microorganisms on soil carbon input are still unclear. In this study, ozone sterilization was used to distinguish the sources of soil organic acids and C-transforming enzymes, and the contribution of root and rhizosphere microorganisms to soil carbon storage during the growth period of two genotypes of tartary buckwheat was studied separately to screen suitable varieties. Through the analysis of the experimental results, the conclusions are as follows: (1) The roots of Diqing tartary buckwheat have stronger carbon sequestration ability in a barren environment than Heifeng, and the microorganisms in Diqing tartary buckwheat soil will also increase soil carbon input. Therefore, Diqing tartary buckwheat is more suitable for carbon sequestration than Heifeng tartary buckwheat in barren soil areas. (2) In the absence of microorganisms, the rhizosphere soil of tartary buckwheat can regulate the storage of soil organic carbon by secreting extracellular enzymes and organic acids. (3) The structural equation model showed that to promote carbon sequestration, Heifeng tartary buckwheat needed to inhibit microbial action when planted in the barren area of Loess Plateau, while Diqing tartary buckwheat needed to use microbial-promoting agents. Adaptive strategies should focus more on cultivar selection to retain carbon in soil and to assure the tolerance of fineness in the future.

Suggested Citation

  • Wei Chen & Zhiwei Zhang & Congjian Sun, 2023. "Differences in Carbon Sequestration Ability of Diverse Tartary Buckwheat Genotypes in Barren Soil Caused by Microbial Action," IJERPH, MDPI, vol. 20(2), pages 1-16, January.
    • Handle: RePEc:gam:jijerp:v:20:y:2023:i:2:p:959-:d:1025709
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    References listed on IDEAS

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    1. Wu Yang & Zhang Min & Mingxing Yang & Jun Yan, 2022. "Exploration of the Implementation of Carbon Neutralization in the Field of Natural Resources under the Background of Sustainable Development—An Overview," IJERPH, MDPI, vol. 19(21), pages 1-28, October.
    2. Zhang, Guangxin & Dai, Rongcheng & Ma, Wenzhuo & Fan, Hengzhi & Meng, Wenhui & Han, Juan & Liao, Yuncheng, 2022. "Optimizing the ridge–furrow ratio and nitrogen application rate can increase the grain yield and water use efficiency of rain-fed spring maize in the Loess Plateau region of China," Agricultural Water Management, Elsevier, vol. 262(C).
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