Importance analysis of seismic landslide influencing factors on the eastern margin of the Qinghai-Xizang Plateau

HUANG Wenxuan; LAN Hengxing; GAO Xing; WANG Wei; WU Yuming; LI Wenping; LIU Jie; LI Langping

doi:10.16031/j.cnki.issn.1003-8035.202407006

2025 Vol. 36, No. 5

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HUANG Wenxuan, LAN Hengxing, GAO Xing, WANG Wei, WU Yuming, LI Wenping, LIU Jie, LI Langping. Importance analysis of seismic landslide influencing factors on the eastern margin of the Qinghai-Xizang Plateau[J]. The Chinese Journal of Geological Hazard and Control, 2025, 36(5): 1-20. doi: 10.16031/j.cnki.issn.1003-8035.202407006

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HUANG Wenxuan, LAN Hengxing, GAO Xing, WANG Wei, WU Yuming, LI Wenping, LIU Jie, LI Langping. Importance analysis of seismic landslide influencing factors on the eastern margin of the Qinghai-Xizang Plateau[J]. The Chinese Journal of Geological Hazard and Control, 2025, 36(5): 1-20. doi: 10.16031/j.cnki.issn.1003-8035.202407006

Importance analysis of seismic landslide influencing factors on the eastern margin of the Qinghai-Xizang Plateau

1.
State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing　100101
2.
University of Chinese Academy of Sciences, Beijing　100049
3.
College of Resource Environment and Tourism, Capital Normal University, Beijing　100048
4.
School of Geological Engineering and Geomatics, Chang'an University, Xi’an, Shaanxi　710064, China

More Information

Corresponding author: LI Langping, lilp@lreis.ac.cn

Received Date: 06 July 2024

Revised Date: 15 September 2024

Accepted Date: 14 July 2025

Publish Date: 25 October 2025

Abstract

Abstract

The spatial distribution of seismic landslides is influenced by a wide range of factors. Understanding the relative importance of these factor is crucial for accurately predicting seismic landslide risks. However, most recently studies on factor importance have focused on individual earthquake events, making it difficult to identify overarching patterns and differences across multiple cases. This study focuses on the eastern margin of the Qinghai-Xizang Plateau and analyzes six earthquake-induced landslide events. Using the decisiveness (DC), we quantitatively assessed the absolute importance of 14 influencing factors: seismic intensity, seismic fault distance, geologic age, non-seismic fault distance, elevation, slope, aspect, geomorphology type, average annual precipitation, river distance, soil type, vegetation type, land use type, and distance to roads. These factors are categorized into six groups: seismic, geo-tectonic, topographic-geomorphic, meteorological-hydrological, soil-vegetation, and human-activity. The results show that: overall, seismic, geo-tectonic, topographic-geomorphic, and meteorological-hydrological factors have a greater influence on seismic landslide occurence, whereas soil-vegetation and human-activity factors are less significant. Moreover, the importance of individual factors varies with earthquake magnitude: for larger-scale earthquakes seismic and geo-tectonic factors dominates; for smaller-scale earthquakes, topographic and hydrological conditions are more influential. By ensuring consistency in the landslide and influencing factor datasets and employing an absolute importance assessment approach across multiple cases, this study provides a systematic analysis of the key drivers of seismic landslides. The findings offer valuable insights for seismic landslide risk assessment and mitigation strategies.
- seismic landslide /
- certainty factor /
- decisiveness /
- Qinghai-Xizang Plateau

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References

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