自然灾害是以自然变异为主要原因而给人类的生存和社会发展带来不利后果的祸害。我国是一个多自然灾害的国家 ,南涝北旱、台风、地震以及沙尘暴等多种自然灾害给人民生活和社会经济发展带来了巨大的损失 ,因此 ,认识它的发生、发展规律 ,提高全民族防灾减灾意识 ,对我国今后的? Natural disasters are the scourge of natural disasters as the main cause of adverse consequences for the survival and social development of mankind. China is a country suffering from multiple natural disasters. Various natural disasters such as floods, typhoons, earthquakes and dust storms have caused tremendous losses to people’s lives and social and economic development. Therefore, it is important to understand its occurrence, development and improvement National awareness of disaster prevention and mitigation, the future of our country?