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A Fuzzy Comprehensive Evaluation Method Based on AHP and Entropy for a Landslide Susceptibility Map

机译:基于AHP和熵的滑坡敏感性图模糊综合评价方法

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Landslides are a common type of natural disaster in mountainous areas. As a result of the comprehensive influences of geology, geomorphology and climatic conditions, the susceptibility to landslide hazards in mountainous areas shows obvious regionalism. The evaluation of regional landslide susceptibility can help reduce the risk to the lives of mountain residents. In this paper, the Shannon entropy theory, a fuzzy comprehensive method and an analytic hierarchy process (AHP) have been used to demonstrate a variable type of weighting for landslide susceptibility evaluation modeling, combining subjective and objective weights. Further, based on a single factor sensitivity analysis, we established a strict criterion for landslide susceptibility assessments. Eight influencing factors have been selected for the study of Zhen’an County, Shan’xi Province: the lithology, relief amplitude, slope, aspect, slope morphology, altitude, annual mean rainfall and distance to the river. In order to verify the advantages of the proposed method, the landslide index, prediction accuracy P , the R -index and the area under the curve were used in this paper. The results show that the proposed model of landslide hazard susceptibility can help to produce more objective and accurate landslide susceptibility maps, which not only take advantage of the information from the original data, but also reflect an expert’s knowledge and the opinions of decision-makers.
机译:滑坡是山区的自然灾害的一种常见类型。由于地质,地貌和气候条件的综合影响,山区滑坡灾害易感性表现出明显的区域性。对区域滑坡敏感性的评估可以帮助减少山区居民的生命危险。在本文中,香农熵理论,模糊综合方法和层次分析法(AHP)已被用于证明滑坡敏感性评估模型的可变权重,它结合了主观和客观权重。此外,基于单因素敏感性分析,我们为滑坡敏感性评估建立了严格的标准。陕西省镇安县的研究已选择了八个影响因素:岩性,起伏幅度,坡度,坡向,坡度形态,海拔,年平均降雨量和距河的距离。为了验证该方法的优越性,本文采用了滑坡指数,预测精度P,R指数和曲线下面积。结果表明,所提出的滑坡灾害易发性模型可以帮助产生更客观,准确的滑坡易发性图,不仅可以利用原始数据中的信息,而且可以反映专家的知识和决策者的意见。

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