灾害学2011，Vol.26Issue(3)：65-68,82,5.
近30年我国自然灾害灾情时间分布特征分析
Analysis on Temporal Distribution Characteristics of Natural Disaster Losses in China in the Recent Three Decades
摘要
Abstract
Making use of the yearly statistics of natural disasters of China between 1978 and 2009 as arranged and ratified by the Ministry of Civil Affairs, and the socio-economic statistics released by the National Bureau of Statistics of China, the interannual and interdecadal variation characteristics of natural disasters in China in terms of the absolute values and relative values of variation in disaster loss data and the fluctuation features of different indicators by adopting coefficients of variation are analyzed.Results indicate that: the interannual variation of different disaster loss indicators caused by natural disasters in China since 1978 is remarkable; Overall, the number of deaths caused by natural disasters has decreased remarkably, the number of collapsed and damaged houses has increased slightly, whereas a conspicuous rising tendency has been witnessed in the other major disaster loss indicators; since the 1980s, the interdecadal variation of disaster loss indicators caused by natural disasters in China, except number of deaths and number of collapsed and damaged houses, have all witnessed a rising tendency.There is a relatively remarkable interannual variation and fluctuation in terms of the intensity of natural disaster losses in China, but the fluctuation of the affected areas of natural disasters is relatively slighter.These variations of disaster loss indicators are mainly related to the main disaster types of each year and whether a year is a major disaster year or not.All the indicators have shown a rising tendency, except the number of deaths.The fluctuation of intensity-representing indicators has been relatively strong and has a tendency to become stronger.These facts reflect a more frequent possibility of extreme events in the context of global climate change and the rising tendency of the intensities of these extreme events.关键词
中国/自然灾害/灾情/时间分布特征/灾情指标Key words
China/ natural disasters/ disaster condition/ temporal distribution characteristics/ disaster loss indicator分类
资源环境引用本文复制引用
袁艺,马玉玲..近30年我国自然灾害灾情时间分布特征分析[J].灾害学,2011,26(3):65-68,82,5.基金项目
国家自然科学基金项目"自然灾害救助应急预案的区域分异规律研究"(40801215) （40801215）
