The population in China’s earthquake-prone areas has increased by over 32 million along with rapid urbanization

Chunyang He · Qingxu Huang · Yinyin Dou · Wei Tu · Jifu Liu

34 citations0/0 files storedEnvironmental Research Letters

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Earthquake and Disaster Impact Studies earthquake and tectonic studies Disaster Management and Resilience

Abstract

Accurate assessments of the population exposed to seismic hazard are crucial in seismic risk mapping. Recent rapid urbanization in China has resulted in substantial changes in the size and structure of the population exposed to seismic hazard. Using the latest population census data and seismic maps, this work investigated spatiotemporal changes in the exposure of the population in the most seismically hazardous areas (MSHAs) in China from 1990 to 2010. In the context of rapid urbanization and massive rural-to-urban migration, nearly one-tenth of the Chinese population in 2010 lived in MSHAs. From 1990 to 2010, the MSHA population increased by 32.53 million at a significantly higher rate of change (33.6%) than the national average rate (17.7%). The elderly population in MSHAs increased by 81.4%, which is much higher than the group's national growth rate of 58.9%. Greater attention should be paid to the demographic changes in earthquake-prone areas in China.

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References

1996Vulnerability to environmental hazards 2014Society: Realizing China's urban dream 2011China’s Demographic History and Future Challenges 2008Population Composition, Migration and Inequality: The Influence of Demographic Changes on Disaster Risk and Vulnerability 2013Global Earthquake Fatalities and Population 2012Integrating population dynamics into mapping human exposure to seismic hazard 2011The Wenchuan Earthquake of 2008: Anatomy of a Disaster 2004Urban Earthquake Fatalities: A Safer World, or Worse to Come?

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