|Table of Contents|

Rapid Identification of Development Patterns and Influencing Factors of Landslides in the Small Gully Land Consolidation Watersheds of Loess Plateau, China(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2025年第03期
Page:
313-330
Research Field:
黄河流域生态保护和高质量发展专刊(上)
Publishing date:

Info

Title:
Rapid Identification of Development Patterns and Influencing Factors of Landslides in the Small Gully Land Consolidation Watersheds of Loess Plateau, China
Author(s):
ZHU Yan-bo1*;  HOU Yu-chen1;  DENG Yao1;  ZHENG Hui-tao1;  PENG Jian-bing1;  LAN Heng-xing2;  ZHANG Yu-xuan1
(1.School of Geological Engineering and Geomatics,Chang'an University,Xi'an 710054,Shaanxi,China; 2.Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China)
Keywords:
landslide;  small watershed;  development pattern;  rapid identification;  UAV-based oblique photogrammetry;  gully land consolidation;  Loess Plateau
PACS:
P642.22
DOI:
10.19814/j.jese.2025.01054
Abstract:
Rapid and accurate identification of development patterns of landslide in small watersheds of Loess Plateau is crucial for the site selection and safe operation of major projects such as gully land consolidation. Xingshuyaozi small watershed, which is a typical small watershed undergoing gully land consolidation in Ansai area of Shaanxi, was selected; high-precision 3D model was constructed using UAV-based oblique photogrammetry technology; combined with slope and terrain curvature information, the model was used to rapidly identify landslide distribution patterns; based on the extracted landslide scale characteristics, a correlation analysis was conducted between geological environmental factors and landslide scale parameters. The results show that UAV-based oblique photogrammetry technology can quickly identify landslide distribution patterns in the hilly and gully regions of Loess Plateau, and accurately calculate landslide scale characteristics; in Xingshuyaozi small watershed, landslides are numerous, concentrate in specific areas, exhibit consistent sliding directions, and belong to the same type; within the 6.3 km2 watershed, 51 landslides are identified, with small and medium-sized landslides accounting for 92.2%, landslides within the loess layer making up 90.2%, and the predominant sliding direction being southeast; the clustered occurrence of landslides in Xingshuyaozi small watershed is controlled by a combination of regional geological structures, topography, gully drainage systems, and vegetation ecology; regional fault zones influence the frequent occurrence of landslides along the main gully of the watershed, while steep slopes with significant elevation differences and narrow, and deeply incised gully bottoms, control the clustering of landslides at the base of tributary gullies; additionally, slope vegetation ecology and river lateral erosion contribute to the frequent occurrence of landslides on sun-facing slopes and along gullies.

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Last Update: 2025-06-20