引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 62次   下载 74 本文二维码信息
码上扫一扫!
分享到: 微信 更多
基于GIS的湖南省滑坡灾害风险和损失评估
申怀飞, 杨清洁, 魏亿鑫, 闫旭倩, 闵家森, 吴宇琛
许昌学院 城市与环境学院, 河南 许昌 461000
摘要:
[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。
关键词:  滑坡  GIS空间分析  风险评估  AHP分析法
DOI:10.13961/j.cnki.stbctb.2020.06.021
分类号:P954
基金项目:河南省教育厅人文社会科学研究项目(2020-ZZJH-426);河南省高等学校重点科研项目(21A170019);许昌学院优秀青年骨干教师项目;许昌学院重点科研项目(2020ZD004)
A Study on Risk and Vulnerability Assessment of Landslide in Hunan Province Based on GIS
Shen Huaifei, Yang Qingjie, Wei Yixin, Yan Xuqian, Min Jiasen, Wu Yuchen
School of Urban and Environmental Sciences, Xuchang University, Xuchang, He'nan 461000, China
Abstract:
[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.
Key words:  landslide  GIS spatial analysis  risk assessment  analytic hierarchy process