Abstract
By analyzing the topographic features of past landslides since 1980s and the main land-cover types (including change information) in landslide-prone area, modeled spatial distribution of landslide hazard in upper Minjiang River Basin was studied based on spatial analysis of GIS in this paper. Results of GIS analysis showed that landslide occurrence in this region closely related to topographic feature. Most areas with high hazard probability were deep-sheared gorge. Most of them in investigation occurred assembly in areas with elevation lower than 3 000 m, due to fragile topographic conditions and intensive human disturbances. Land-cover type, including its change information, was likely an important environmental factor to trigger landslide. Destroy of vegetation driven by increase of population and its demands augmented the probability of landslide in steep slope.
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Foundation item: Supported by the Knowledge Innovation Program of Chinese Academy of Sciences (KZCX2-SW-319 01) and Department of Science & Technology of Sichuan Province ([2005]-172-140107).
Biography: FENG Wenlan (1979-), female, Ph. D. candidate, research direction: application and development of geographic information system and remote sensing.
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Wenlan, F., Qigang, Z., Baolei, Z. et al. GIS-based spatial analysis and modeling for landslide hazard assessment: A case study in upper Minjiang River basin. Wuhan Univ. J. Nat. Sci. 11, 847–852 (2006). https://doi.org/10.1007/BF02830175
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DOI: https://doi.org/10.1007/BF02830175