摘要 : Since water is of major importance for all sectors of society, the environment and the economy, water-related problems are dealt with by different branches of the administration, both nationally as well as internationally. At the ... 展开 Since water is of major importance for all sectors of society, the environment and the economy, water-related problems are dealt with by different branches of the administration, both nationally as well as internationally. At the international level, UNESCO (education and science), WMO (operational aspects), WHO (health aspects), and FAO (agriculture, irrigation aspects etc.) in particular, as well as a number of economic commissions of the United Nations are dealing with these problems. Moreover, there are a number of international nongovernmental organisations that also deal with water-related problems from different angles. In the following, the focus is on UNESCO. 收起