许昌学院 城市与环境学院,河南,许昌,461000
纸质出版:2020
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申怀飞, 杨清洁, 魏亿鑫, 等. 基于GIS的湖南省滑坡灾害风险和损失评估[J]. 水土保持通报, 2020,40(6):146-152.
Shen Huaifei, Yang Qingjie, Wei Yixin, et al. A Study on Risk and Vulnerability Assessment of Landslide in Hunan Province Based on GIS[J]. Bulletin of Soiland Water Conservation, 2020, 40(6): 146-152.
申怀飞, 杨清洁, 魏亿鑫, 等. 基于GIS的湖南省滑坡灾害风险和损失评估[J]. 水土保持通报, 2020,40(6):146-152. DOI: 10.13961/j.cnki.stbctb.2020.06.021.
Shen Huaifei, Yang Qingjie, Wei Yixin, et al. A Study on Risk and Vulnerability Assessment of Landslide in Hunan Province Based on GIS[J]. Bulletin of Soiland Water Conservation, 2020, 40(6): 146-152. DOI: 10.13961/j.cnki.stbctb.2020.06.021.
[目的] 评估湖南省滑坡发生的风险和损失等级,丰富湖南省滑坡防治理论及方法,为该地减少滑坡灾害提供科学依据。[方法] 基于GIS技术和层次分析法(AHP)以DEM、遥感、气象、岩性、地震点等数据为支撑,分别从危险性评价和易损性评价两方面对湖南省滑坡风险进行评估。[结果] ①湖南省滑坡风险等级大多处于中低风险等级,少部分为较高风险或高风险等级,中度风险等级最多,占全省面积的31.31%,其余依次为较低、较高、低和高风险等级,其比例分别是24.92%,22.09%,13.88%和7.79%;②从空间格局来看,风险性等级整体呈现出中部、东南高,西南、东北低的空间分布特征;③湖南省滑坡损失等级整体呈现出东高西低,局部不均匀的分布特征。[结论] 湖南省滑坡灾害的管理主要应从预防和整治两方面进行,依据各地区常见滑坡类型,制定有针对性的区域差异化防治预案。
[Objective] The risk and loss of landslides in Hunan Province was evaluated to enrich the theories and methods of landslide prevention in Hunan Province in order to provide a scientific basis for reducing landslide disasters in this area.[Methods] Based on GIS technology and analytic hierarchy process (AHP)
with the support of DEM
remote sensing
meteorology
lithology
seismic points and other data
the risk assessment of landslides in Hunan Province was evaluated from two aspects:risk assessment and vulnerability assessment.[Results] ① Most of the landslide risk grades in Hunan Province are in the middle and low risk grades
and a few of them are at high risk level. The medium risk level is the most
accounting for 31.31% of the whole province. The rest are low
moderate
relative high
and high risk levels
accounting for 24.92%
22.09%
13.88% and 7.79%
respectively. ② From the perspective of spatial pattern
the characters of the overall risk grade distribution are low in the northeast and southwest
while high in the southeast and middle.③ The loss level of Hunan Province is generally low in west and high in east
with middle in moderate and uneven distribution locally.[Conclusion] The landslide disaster in Hunan Province should be managed from two aspects of prevention and control
according to the common types of landslide in prefecture-level cities in Hunan Province
targeted regional different prevention and control plan should be formulated.
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