文章基本信息

标题：GIS-based landslide susceptibility mapping using analytical hierarchy process: a case study of Astore region, Pakistan
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作者：Nouman Afzal ; Adeel Ahmad ; Safdar Ali Shirazi 等
期刊名称：EQA - International Journal of Environmental Quality
印刷版ISSN：2281-4485
出版年度：2022
卷号：48
页码：27-40
DOI：10.6092/issn.2281-4485/12600
语种：English
出版社：Alma Mater Studiorum - University of Bologna
摘要：In this study, landslide susceptibility analysis were undertaken in the Astore region, Pakistan. The Geographical Information System (GIS) and Remote Sensing (RS) techniques were used along with the analytical hierarchy process (AHP) to find out the landslide susceptibility of the region. The Astore, lying in the Himalayan mountains, experiences frequent landslides due to several triggering factors. Factors including slope, lithology, aspect, topographic wetness index (TWI), plan curvature, stream power index (SPI), distance from drainage, land use land cover (LULC) and soil were used. Each factor was processed in the GIS environment and weighted through the AHP technique. AHP weights were derived with a consistency ratio of 0.06. Finally, the five zones, very low, low, moderate, high, and very high are respectively covering 20.5% (28.98 km2), 33.1% (46.78 km2), 30.6% (43.26 km2), 10.8% (15.28 km2), and 4.9% (6.92 km2). Slope, lithology and LULC were the most important factors in triggering landslides.