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石羊河流域处于我国外流与内陆流域接壤地带,在国家生态安全中占有重要地位。流域气候干旱少雨,蒸发力旺盛,水资源缺乏,下游的广大盆地仅靠其上游山区小部分地区的降雨和冰雪提供水源。多年平均地表水资源量15.75亿m3,与地表水不重复的地下水资源量1.1亿m3,水资源总量16.85亿m3。亩均水资源272m3,人均756 m3,人均水资源仅为国际公认的缺水紧张警戒线3的44%。随着经济社会的快速发展,石羊河流域成为我国
Shiyang River Basin in China’s outflow and inland basin bordering areas, in the national ecological security occupies an important position. The climate in the basin is arid and dry with strong evaporation capacity and lack of water resources. The vast lower reaches of the basin provide water source only by rainfall and ice and snow in a small part of its upper reaches. The average surface water resources for many years are 1.575 billion m3, 110 million m3 of groundwater resources are non-repetitive with surface water, and the total water resources is 1.685 billion m3. The average water resource per mu is 272m3, with a per capita population of 756m3. The per capita water resources are only 44% of the internationally recognized water shortage alert line 3. With the rapid economic and social development, Shiyang River Basin became China