[1]Quan Min,Du Xinpeng,Bi Yinli.Effects of AMF Inoculation on Root and Aggregate Stability of Three Plant Species in Open Pit Dump[J].Research of Soil and Water Conservation,2024,31(03):187-194.[doi:10.13869/j.cnki.rswc.2024.03.034]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
31
Number of periods:
2024 03
Page number:
187-194
Column:
Public date:
2024-04-30
- Title:
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Effects of AMF Inoculation on Root and Aggregate Stability of Three Plant Species in Open Pit Dump
- Author(s):
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Quan Min1, Du Xinpeng2, Bi Yinli2,3
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(1.Shenhua Group Zhungeer Energy Co., Ltd., Ordos, Inner Mongolia 010300, China; 2.Institute of Mine Ecological Restoration, China University of Mining and Technology(Beijing), Beijing 100083, China; 3.Institute of Ecological Environment Restoration in Mine Area of West China, Xi'an University of Science and Technology, Xi'an 710054, China)
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- Keywords:
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new dumping site; aggregate stability; root morphological characteristics; soil enzyme activity
- CLC:
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S156
- DOI:
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10.13869/j.cnki.rswc.2024.03.034
- Abstract:
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[Objective] The aims of this study are to explore the effect of arbuscular mycorrhizal fungi AMF on the stability of plant roots and soil aggregates, and to provide a theoretical basis for the ecological restoration of open pit dump. [Methods] Soil physicochemical properties, soil enzyme activities, plant root morphology, soil aggregate stability and other indexes of 3 species of Amorpha fruticosa, Hippophae rhamnoides, Caragana korshinskii were sampled and measured in the control and inoculated plots. Correlation analysis was conducted for each index. [Results] The average root diameter of the three plants could be significantly increased by inoculation, and the inoculation plot was 1.33~2.24 times that of the control. Under the condition of compacted soil, mycelia to some extent provided water and nutrients for plants instead of fine roots, which reduced the total root length of root system. Inoculation significantly increased soil enzyme activity and soil organic matter content, alkaline phosphatase activity increased by 335.62%, urease activity increased by 44.73%, extractable balloon amycin content increased by 82.56%, soil organic matter content increased by 64.74%. By increasing soil organic matter content and soil enzyme activity, inoculation significantly enhanced the stability of soil aggregates, increased the average weight diameter by 24.14%~34.29%, and reduced the failure rate of aggregates by 18.25%~24.35%. [Conclusion] Inoculation of AMF in open pit dump can significantly improve soil biological activity, increase nutrient content, promote plant root development, and thus improve the stability of soil aggregates.