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Assessment of Debris Flow Risk Factors Based on Meta-Analysis—Cases Study of Northwest and Southwest China

Author

Listed:
  • Yuzheng Wang

    (College of Construction Engineering, Jilin University, Changchun 130026, China)

  • Lei Nie

    (College of Construction Engineering, Jilin University, Changchun 130026, China)

  • Min Zhang

    (College of Construction Engineering, Jilin University, Changchun 130026, China)

  • Hong Wang

    (College of Construction Engineering, Jilin University, Changchun 130026, China)

  • Yan Xu

    (College of Construction Engineering, Jilin University, Changchun 130026, China)

  • Tianyu Zuo

    (College of Construction Engineering, Jilin University, Changchun 130026, China)

Abstract

Debris flow is a type of special torrent containing numerous solid materials. With many types of factors affecting debris flow, there is no reliable basis for the selection of risk factors for debris flow risk assessment. Therefore, to study the factors affecting debris flow, exploring a reliable method for assessing the relative importance of these factors is a significant endeavor in debris flow prevention and control work. In this research, debris flow risk assessment was combined with meta-analysis to analyze quantitatively the relative importance of risk factors of debris flow in northwest and southwest China. The final relative importance of each factor in northwest China is as follows, maximum relative height difference > slope of main channel > maximum daily precipitation > ratio of longitudinal slope > drainage area > length of main channel. In addition, in southwest China, maximum relative height difference > maximum daily precipitation > slope of main channel > ratio of longitudinal slope > length of main channel > drainage area. The meta-analysis results were accurate, which can provide a reliable basis for the selection of debris flow risk factors in debris flow risk assessment. Furthermore, it provides strong support for the application of meta-analysis in risk assessment of other geological hazards.

Suggested Citation

  • Yuzheng Wang & Lei Nie & Min Zhang & Hong Wang & Yan Xu & Tianyu Zuo, 2020. "Assessment of Debris Flow Risk Factors Based on Meta-Analysis—Cases Study of Northwest and Southwest China," Sustainability, MDPI, vol. 12(17), pages 1-24, August.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:17:p:6841-:d:402907
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    References listed on IDEAS

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    Cited by:

    1. Mateusz Trzeciak, 2021. "Sustainable Risk Management in IT Enterprises," Risks, MDPI, vol. 9(7), pages 1-20, July.
    2. Fei Wang & Yongqiang Cao & Shuaibang Fan & Ruoning Zhang, 2022. "Study on the Identification and Classification of Key Influencing Factors of Debris-Flow-Prone Areas in Liaoning Province Based on Self-organizing Clustering and Sensitivity Analysis," Sustainability, MDPI, vol. 15(1), pages 1-17, December.
    3. Yongde Kang & Jingming Hou & Yu Tong & Baoshan Shi, 2021. "A Hydrodynamic-Based Robust Numerical Model for Debris Hazard and Risk Assessment," Sustainability, MDPI, vol. 13(14), pages 1-19, July.

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