自人类产生以来,安全问题始终是一个生死攸关的重大问题。在古代,对人类安全构成威胁的主要是各种自然灾害。“诺亚方舟”源自基督教经典的一个人所共知的故事,是说远古时期地球上发生过一次规模巨大的水灾,大水吞噬了无数的人和其他生命。大禹治水的传说告诉我们,在五千年前的中国大地上同样出现过严重的洪涝灾害。随着科学技术的发展,人类认识和改造自然的能力极大提高,各种自然灾 Since the emergence of mankind, security has always been a major issue of life and death. In ancient times, the main threats to human security were all kinds of natural disasters. The story of Noah’s Ark, a source from the Christian classics, is that there was a massive flood in ancient times that engulfed countless people and other lives. The legend of Dayu flood control tells us that there were also serious floods on the vast land of China five thousand years ago. With the development of science and technology, the ability of human beings to recognize and transform nature has greatly increased. All kinds of natural disasters