总结过去，展望未来，作者提出新世纪人类水事活动的新思维，并用大量事例和数据作了论证，认为在21世纪的水事活动中必须正确处理人类活动、水体动态、生态环境、经济发展与社会进步的关系，简称人-水-环-发-社关系；要特别把握人类水事活动和其它人类活动对水体动态的长期影响及其逆反作用；要把水库视为保护和恢复水源的决定性措施加以实现；正确处理耕地、绿地和水域的关系，保护并适当增大水体面积，保护沼泽，关心小河小水的命运；在未来水事活动中要从与天的抗争转变为适应与利用，充分运用各种信息技术建立“信息水利”，并通过对水文气象的把握，经营“应变农业”，从而在获得足够农产品的同时能在用水量最大的部门求得战略性的节水途径。

Based on the summing up the past experience and looking for the future, the author advances some new thought on water-related human activities in the new century, and cites enormous cases and data to testify them and holds that in the water-related human activities in the 21st century, the relationships among human activities, water-body dynamic states, ecological environment, economic development and social progress should be properly dealt with. Their relationships can be called as： human-water-environment-development-society relationship for short. Furthermore the author considers that it is important to master the long-term effect of human water-related activities and other productive activities upon water-body dynamics as well as the inverse actions. Water-saving and water quality protection should be put in the first and important position of water-related human activities. Research, exploration and utilization of waters in atmosphere and sea should be intensified. Afforestation and protection of existing forest, — the “green reservoir” should be regarded as decisive measures to protect and restore water sources, which should be put into the implementation. The relationship among farmland, forest and water-cover area should be properly dealt with, in which the area of water-cover should be protected and enlarged properly. Also, marsh must be properly protected, and great concerns must be shown for small streams and small waterbodies. In the future water-related human activities, the human beings should adapt to and take advantage of the nature rather than against it, make full use of information technologies of various kinds to establish “informative water resources” Through understanding and mastering of hydrome-terological phenomena, set up adjustable agriculture 一 “strainable agriculture”，thereby find proper strategic to save water in the sectors with high water-consuming while obtaining enough agriculture produces.