黄河是我国西北、华北地区的重要水源。随着流域经济社会的发展 ,对黄河水资源的需求不断增加 ,供需矛盾日趋尖锐。 90年代以来 ,黄河下游断流现象日趋严重 ,引起了各级领导的高度重视和社会各界的广泛关注。展望 2 1世纪 ,黄河水资源将成为流域经济发展、社会进步的制约因素。建设南水北调西线工程 ,促进黄河水资源的可持续利用 ,对黄河流域乃至西北及华北地区经济社会的可持续发展和生态环境的改善具有重大的战略意义 The Yellow River is an important source of water in northwest and north China. With the economic and social development of the river basin, the demand for the water resources of the Yellow River is increasing, and the contradiction between supply and demand is becoming increasingly acute. Since the 1990s, the phenomenon of the cutoff in the lower reaches of the Yellow River has become increasingly serious, which has aroused the attention of leaders at all levels and widespread attention from all walks of life. Looking into the 21st century, the water resources of the Yellow River will become a constraint factor in the economic development and social progress of the basin. The construction of the West Route Project of the South-to-North Water Diversion Project to promote the sustainable use of the Yellow River water resources is of great strategic significance to the sustainable economic and social development of the Yellow River Basin and even to the Northwest and North China and the improvement of the ecological environment.