南水北调作为跨流域大规模调水工程是一项复杂的系统工程。从水资源可持续利用的角度讲,应站在循环经济高度,把南水北调工程作为一项生态工程来实施。从现代水资源合理开发利用研究必须从系统定量的角度研究水资源系统与水社会经济系统的整体行为、演化规律及其相互作用的角度,将自然资源外生变量内生化,指导南水北调中线工程。 As a large-scale inter-basin water diversion project, the South-to-North Water Diversion Project is a complicated systematic project. From the perspective of sustainable utilization of water resources, we should stand at the height of circular economy and implement the South-North Water Diversion Project as an ecological project. From the perspective of systematic quantitative study of the overall behavior, evolution and interaction of water resources systems and water socio-economic systems, we must endogenize the exogenous variables of natural resources and guide the midline project of South-to-North Water Diversion.