论文部分内容阅读
如同对大多数人类活动一样,水对各种形式的动植物的生命活动都是重要的,同时,水对由这些活动造成的环境变动也是高度敏感的。这一事实不可避免地对人类造成尖锐的无穷的问题。这些问题既产生于人类对水不断增长的需要,也产生于各种人类活动对水循环——因此也是对生物圈本身——的影响。自人类起源以来就存在于水、人和生物圈之间的微妙的变动着的相互关系,由于现在人掌握的知识和手段使他能对正在生物圈循环的水进行很大的干预,而显得更加突出。经验已经证明,这些干预可能是有害的,也可能是有益的。在现在的世界形势下,正确地干预和避免错误已日益重要,因为这些错误的长期后果可能是灾难性的。
As with most human activities, water is important for the life and activities of all forms of flora and fauna, and water is also highly sensitive to environmental changes caused by these activities. This fact inevitably causes acute and immense problems for humanity. These problems stem from both the growing human need for water and the effects of various human activities on the water cycle, and hence the biosphere itself. The subtle, fluctuating interdependencies that have existed since the origins of mankind in water, man and the biosphere have become even more pronounced because of the knowledge and means now available to him that he can make a great deal of intervention in the water that is circulating in the biosphere . Experience has shown that these interventions can be harmful and may be helpful. In today’s world situation, the proper intervention and avoidance of errors have become increasingly important, as the long-term consequences of these mistakes can be catastrophic.