结合中国科学院知识创新工程项目“华北地区水循环与水资源安全”的研究工作,论述华北地区紧迫的水安全问题与反思,展望国际水科学研究前沿与热点问题,介绍中国科学院在变化环境下的水循环、农业节水和水资源安全研究的阶段成果和近期研究行动计划,提出中国北方特别是华北地区的水文水资源科学研究与发展的几点建议。目的是研讨未来中国北方特别是华北地区水资源安全国家需求中的长远发展的前沿性问题。

This paper addresses the emergency water security problems in North China in terms of the researches on water cycle and water resources security supported by the Key Innovation Project of the Chinese Academy of Sciences.Development of international research related to water issue is also reviewed.Moreover,research program and advances on water cycle to the chan-ging environment,water-saving agriculture,and countermeasures of water security in North China are introduced.The key issues and suggestions of this research in the future are proposed.The aim is to approach key issues of water resources management and water security in the long terms development of North China.