“自然灾害”是人类依赖的自然界所发生的异常现象,自然灾害对人类社会造成的危害往往是触目惊心的。我国是世界上自然灾害最严重的少数国家之一,历史长、危害范围广、爆发率高,且具有季节性、阶段性、持续性、周期性、交替性和群发性等特点。自上个世纪90年代以来,自然灾害造成的经济损失呈明显上升趋势,已经成为影响经济社会和谐发展和社会安定的重要因素。 Natural disasters are the anomalies that occur in the natural world upon which human beings depend. It is often shocking that natural disasters cause harm to human society. China is one of the few countries in the world with the most serious natural disasters. It has a long history, a wide range of dangers and a high explosion rate. It has the characteristics of being seasonal, staged, continuous, periodic, alternating and massive. Since the 1990s, the economic loss caused by natural disasters has been on the rise. It has become an important factor that affects the harmonious development of economy and society and social stability.