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Advances in Earth Science >

2016 , Vol. 31 >Issue 9: 926 - 936

DOI: https://doi.org/10.11867/j.issn.1001-8166.2016.09.0926

Orginal Article

Comparative Analysis of Risk Assessment of Landslides and Debris Flows of China in 2000 and 2010

  • Xilin Liu ,
  • Cheng Miao ,
  • Chunshan Tian ,
  • Jin’an Qiu
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  • 1.School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275, China
    2.Guangdong Province Key Laboratory of Urbanization and Geo-Simulation, Sun Yat-sen University, Guangzhou 510275, China

First author:Liu Xilin (1963-), male, Xinshao County, Hu’nan Province, Professor. Research areas indude risk assessment and prediction of geomorphic hazards.E-mail:liuxilin@mail.sysu.edu.cn

Received date: 2016-06-03

  Revised date: 2016-08-20

  Online published: 2016-09-20

Supported by

Project supported by the National Natural Science Foundation of China “Basic problems of disaster risk and acceptable risk—Taking debris flow as an example”(No.41171407)

Copyright

地球科学进展 编辑部, 2016,
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Abstract

Landslides and debris flows occurr in China frequently and cause disastrous losses of life and property. The risk assessment of landslides and debris flows and their spatial variations were comparatively analyzed in this paper, which has great significance for disaster prevention. This article selected 1 km×1 km grid as the assessment unit and with support of GIS technique, analyzed landslide and debris-flow risk distribution and their spatial variations from 2000 to 2010. The research results indicated that the spatial distribution of risk classes in 2000 and 2010 was obviously discrepant. Overall, taking the Heihe-Tengchong population density line as the boundary, the west of the line is mainly low risk area; the east of the line is mainly high risk area. Compared with the risk of 2000, the risk values of 2010 increased, with the high risk area and low risk area enlarged, moderate risk area reduced. The moderate risk area is the most unstable and sensitive risk area, and its risk class variation is significant. However, China is not a region with the high risk of landslide and debris-flow hazard at present. In the following next 10 years, the risk of landslides and debris flows in China will continue to increase.

Key words： Landslides and debris flows; Hazard assessment; Vulnerability assessment; Risk assessment; Comparative analysis.

Cite this article

Xilin Liu , Cheng Miao , Chunshan Tian , Jin’an Qiu . Comparative Analysis of Risk Assessment of Landslides and Debris Flows of China in 2000 and 2010[J]. Advances in Earth Science, 2016 , 31(9) : 926 -936 . DOI: 10.11867/j.issn.1001-8166.2016.09.0926

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