Climate Change Research ›› 2014, Vol. 10 ›› Issue (2): 103-109.doi: 10.3969/j.issn.1673-1719.2014.02.004

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Risk Analysis of Mountain Hazards in Tibetan Plateau Under Global Warming

Cui Peng1, Chen Rong1, 3, Xiang Lingzhi2, Su Fenghuan1   

  1. 1 Key Laboratory of Mountain Hazards and Earth Surface Processes, Chinese Academy of Sciences/Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China; 
    2 Institute of Geotechnical Engineering, Chongqing Jiaotong University, Chongqing 400074, China; 
    3 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2013-09-05 Revised:2014-01-09 Online:2014-03-30 Published:2014-03-30
  • Contact: peng cui

Abstract: Based on the mountain hazards events in the Tibetan Plateau during the period of 1930-2010, the impacts of global warming on mountain hazards in alpine area were analyzed. Under the circumstance of global warming, glacial lake outburst disaster and glacial debris tended to be more active. Disaster chain was apparent and showed a tendency of spatial and temporal extension, associated with the increasing occurrences of catastrophe. It showed a climatic characteristics of rain and heat occurring in the same period, which constituted a favorable combination for the formation of glacial debris in the southeast region of Tibet. Building distribution in debris-flow risky areas of Sangdeng Gully and Ganong Gully with an area of 0.014 km2 in 1988 extended to 1.004 km2 in 2012, economic activity overlapped with the high risk areas coupled with the increasing disaster risk due to climate change, and thus disaster risk in mountain regions significantly increased. The above results provide evidence about the impact of climate change on mountain hazards in Tibetan Plateau and preliminarily describe characteristics of the impact, which will help to reduce mountain hazards and further understand the corresponding impact mechanism.

Key words: climate change, mountain hazards, disaster risk, glacial lake outburst, Tibetan Plateau

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