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在从上海飞往西北的飞机上很容易看到,有河流的地方才有绿色植被,有绿色植被的地方才有房屋、村庄和城市。水是人类生活和生产活动的必需元素,水占地球表面积的71%,人类因为生活的需要和交通运输的便利,往往临水而居,导致世界上大型经济发达城市均处于沿海地区。由于气象因素、人类对水资源过度开发利用、人为灾难等,人类赖以生存的水资源对人类的生存可造成巨大灾难。纵观近百年来人类经历的灾害史,水系相关性灾难或灾害占人类社
It is easy to see on planes flying from Shanghai to the northwest where green vegetation is found only in rivers and houses, villages and cities where green vegetation exists. Water is an essential element of human life and production activities. Water accounts for 71% of the Earth’s surface area. Due to the needs of living and transportation, human beings often live in water, leading to the large-scale economically developed cities in the world are in the coastal areas. Due to the meteorological factors, mankind’s over exploitation and utilization of water resources and man-made disasters, the water resources on which mankind depends can cause great catastrophe to the survival of mankind. Throughout the history of disasters that have been experienced by humankind for nearly a century, water-related disasters or disasters have accounted for human society