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Debris flow and landslide hazard mapping and risk analysis in China

机译:中国泥石流和滑坡灾害成图及风险分析

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摘要

This paper assesses the hazardousness, vulnerability and risk of debris flow and landslide in China and compiles maps with a scale of 1:6000000, based on Geographical Information System (GIS) technology, hazard regionalization map, socioeconomic data from 2000. Integrated hazardousness of debris flow and landslide is equivalent to the sum of debris flow hazardousness and landslide hazardousness. Vulnerability is assessed by employing a simplified assessment model. Risk is calculated by the following formula: Risk = Hazardousness × Vulnerability. The analysis results of assessment of hazardousness, vulnerability and risk show that there are extremely high risk regions of 104 km2, high risk regions of 283008 km2, moderate risk regions of 3161815 km2, low risk regions of 3299604 km2, and extremely low risk regions of 2681709 km2. Exploitation activities should be prohibited in extremely high risk and high risk regions and restricted in moderate risk regions. The present study on risk analysis of debris flow and landslide not only sheds new light on the future work in this direction but also provides a scientific basis for disaster prevention and mitigation policy making.
机译:本文评估了中国泥石流和滑坡的危害性,脆弱性和风险,并基于地理信息系统(GIS)技术,危害分区图和2000年以来的社会经济数据编制了比例为1:6000000的地图。碎片的综合危害性流和滑坡等于泥石流危险和滑坡危险之和。通过使用简化的评估模型评估漏洞。风险由以下公式计算:风险=危险性×脆弱性。危险性,脆弱性和风险评估的分析结果显示,有极高风险区域104 km2 ,高风险区域283008 km2 ,中度风险区域3161815 km2 ,低危险区域为3299604 km2 ,极低危险区域为2681709 km2 。在极高风险和高风险地区应禁止开采活动,而在中度风险地区应限制开采活动。目前关于泥石流和滑坡风险分析的研究不仅为该方向的未来工作提供了新的思路,而且为防灾减灾政策的制定提供了科学依据。

著录项

  • 来源
    《Frontiers of Earth Science》 |2012年第3期|p.306-313|共8页
  • 作者单位

    School of Geography and Planning, Sun Yat-Sen University, Guangzhou, 510275, China;

    School of Geography and Planning, Sun Yat-Sen University, Guangzhou, 510275, China;

    Key Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal University, Beijing, 100875, China;

    Key Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal University, Beijing, 100875, China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    debris flow and landslide hazards; hazardousness; vulnerability; risk assessment and analysis; GIS mapping;

    机译:泥石流和滑坡灾害;危险性;脆弱性;风险评估和分析;GIS绘图;
  • 入库时间 2022-08-17 13:14:14

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