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Effects of Grazing Exclusion on Microbial Community Diversity and Soil Metabolism in Desert Grasslands

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  • Meiju Geng

    (College of Ecology and Environment, Xinjiang University, Urumqi 830017, China
    Key Laboratory of Oasis Ecology of Education Ministry, Xinjiang University, Urumqi 830017, China
    Xinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem, Xinjiang University, Urumqi 830017, China)

  • Xinhui Wang

    (College of Ecology and Environment, Xinjiang University, Urumqi 830017, China
    Key Laboratory of Oasis Ecology of Education Ministry, Xinjiang University, Urumqi 830017, China
    Xinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem, Xinjiang University, Urumqi 830017, China)

  • Xiaoying Liu

    (College of Ecology and Environment, Xinjiang University, Urumqi 830017, China
    Key Laboratory of Oasis Ecology of Education Ministry, Xinjiang University, Urumqi 830017, China
    Xinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem, Xinjiang University, Urumqi 830017, China)

  • Pei Lv

    (College of Ecology and Environment, Xinjiang University, Urumqi 830017, China
    Key Laboratory of Oasis Ecology of Education Ministry, Xinjiang University, Urumqi 830017, China
    Xinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem, Xinjiang University, Urumqi 830017, China)

Abstract

In this study, the effect of 14 years of GE exclusion in a desert grassland on soil microbial community diversity and metabolites was examined. GE changed the bacterial community structure, the alpha diversity of the bacterial community, and the total phosphorus (TP) and total potassium (TK) content in the soil. More specifically, the relative abundance of Actinobacteria, Proteobacteria, and Chloroflexi increased with GE. In contrast, the relative abundance of Acidobacteria was higher during grazing (G), so it is believed that soil bacteria adapt to environmental changes. Both amino acid and carbohydrate metabolism were enhanced, while lipid metabolism was decreased under GE. It was concluded that GE could trigger changes in both bacterial diversity and soil metabolites, increase the energy supply, and regulate ecosystem function. Consequently, GE would have positive effects on the restoration of desert grasslands by altering the soil microbial community. This work provides new insights into the response of soil microbes to GE.

Suggested Citation

  • Meiju Geng & Xinhui Wang & Xiaoying Liu & Pei Lv, 2023. "Effects of Grazing Exclusion on Microbial Community Diversity and Soil Metabolism in Desert Grasslands," Sustainability, MDPI, vol. 15(14), pages 1-16, July.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:14:p:11263-:d:1197758
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    References listed on IDEAS

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    1. Gang Li & Zhi Zhang & Linlu Shi & Yan Zhou & Meng Yang & Jiaxi Cao & Shuhong Wu & Guangchun Lei, 2018. "Effects of Different Grazing Intensities on Soil C, N, and P in an Alpine Meadow on the Qinghai—Tibetan Plateau, China," IJERPH, MDPI, vol. 15(11), pages 1-16, November.
    2. Mohammad K. Hassan & John A. McInroy & Joseph W. Kloepper, 2019. "The Interactions of Rhizodeposits with Plant Growth-Promoting Rhizobacteria in the Rhizosphere: A Review," Agriculture, MDPI, vol. 9(7), pages 1-13, July.
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