Scholarlink

<p>Landslides are among the most frequent geohazards in loess-covered regions. Understanding their spatial distribution, characteristics, and evolutionary processes is essential for effective assessment and mitigation. This study presents detailed field investigations and data analyses conducted in Dali County, located on the eastern margin of the Chinese Loess Plateau. The spatial patterns, quantities, morphologies, and magnitudes of landslides were analyzed in relation to regional faults and rivers. The results indicate that landslides are strongly influenced by faults and rivers, with linear concentrations observed along geomorphic boundaries shaped by ancient river incision and fault activity. Based on their genesis, slope zones were categorized as river-genesis slope (RGS), fault-genesis slope (FGS), and fault-river-genesis slope (FRGS). Under combined topographic and anthropogenic influences, the RGS zone contains the most landslides, whereas the FRGS zone has the highest landslide density. Landslide morphologies are significantly influenced by rivers and faults, and the average scale of landslides shows a negative correlation with terrain fragmentation (RGS &gt; FGS &gt; FRGS). Furthermore, the evolution of modern landslides is conceptualized in four stages: (1) the initial stage of the formation of elevation differences, (2) loess deposition, (3) loess slope dissection, and (4) modern landslide formation. These stages reflect the combined effects of fault activity, river erosion, and anthropogenic intervention. The findings offer valuable insights into the mechanisms of geomorphologic and geologic control of landslide characteristics in loess terrains. This research contributes to the understanding of loess landslide evolution and supports hazard assessment and risk reduction efforts in similar geological settings.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Characteristics of loess landslides under the effects of faults and rivers and their correlations with geological and surficial evolutionary processes

  • 期刊论文

  • 发表日期：

    2025年6月13日

查看全文
  • Qi-qi Liu,
  • Wan-li Xie,
  • Hui Yang,
  • Ming Yan,
  • Rong-sen Zhu,
  • Ke Mu,
  • Yi-lun Chang,
  • Shengjie Di,
  • Xiaoliang He,
  • Xiaomin Liu,
  • Ying Zhang

摘要

Landslides are among the most frequent geohazards in loess-covered regions. Understanding their spatial distribution, characteristics, and evolutionary processes is essential for effective assessment and mitigation. This study presents detailed field investigations and data analyses conducted in Dali County, located on the eastern margin of the Chinese Loess Plateau. The spatial patterns, quantities, morphologies, and magnitudes of landslides were analyzed in relation to regional faults and rivers. The results indicate that landslides are strongly influenced by faults and rivers, with linear concentrations observed along geomorphic boundaries shaped by ancient river incision and fault activity. Based on their genesis, slope zones were categorized as river-genesis slope (RGS), fault-genesis slope (FGS), and fault-river-genesis slope (FRGS). Under combined topographic and anthropogenic influences, the RGS zone contains the most landslides, whereas the FRGS zone has the highest landslide density. Landslide morphologies are significantly influenced by rivers and faults, and the average scale of landslides shows a negative correlation with terrain fragmentation (RGS > FGS > FRGS). Furthermore, the evolution of modern landslides is conceptualized in four stages: (1) the initial stage of the formation of elevation differences, (2) loess deposition, (3) loess slope dissection, and (4) modern landslide formation. These stages reflect the combined effects of fault activity, river erosion, and anthropogenic intervention. The findings offer valuable insights into the mechanisms of geomorphologic and geologic control of landslide characteristics in loess terrains. This research contributes to the understanding of loess landslide evolution and supports hazard assessment and risk reduction efforts in similar geological settings.