Acta Geographica Sinica ›› 2012, Vol. 67 ›› Issue (2): 211-220.doi: 10.11821/xb201202007

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Seismic Vulnerability of Rural Housing and Regional Anti-disaster Strategies in China

GAO Xiaolu1, JI Jue1,2, JIN Fengjun1, NIU Fangqu1   

  1. 1. Key Laboratory of Regional Sustainable Development Modeling, CAS; Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2011-02-16 Revised:2011-12-08 Online:2012-02-20 Published:2012-04-16
  • Supported by:
    National Technology R&D Program, No.2011BAK07B02; No.2008BAK50B05; National Natural ScienceFoundation of China, No.41171138

Abstract: In China, more than 80% of the total loss of seismic disasters happened in rural areas. In particular, damages of rural housing have been the main cause of casualties and property losses. This study evaluated the seismic vulnerability of counties in terms of the structure of rural houses, based on the share of different building structures including wood, brick, mix, reinforced concrete, the earthquake intensity zoning of China, and probabilities of building damage by structures. With a comprehensive damage index made up of damage amount and damage ratio, all the counties are classified into four vulnerability levels: low, medium, high, and extremely high. Then the influencing factors of vulnerabilities and their spatial differentiations are explored, including those of building structure, earthquake intensity and population density. Accordingly, suggestions are made for anti-disaster strategies in different areas.

Key words: Earthquake, housing structure, Vulerability, exposure, housing damage, seismic loss, China