甘肃省张掖市地处我国西北内陆腹地,丝绸之路中部,属典型的大陆性干旱气候,全市有大小河流26条,均属内陆河黑河水系,多年平均天然径流量24.75亿m3,其中黑河15.8亿m3,地表水、地下水总资源量为26.5亿m3。人均占有可利用水资源量1250m3,低于全国人均水平,属于资源型缺水地区。 一、旱灾情况及其成因 2001年张掖市发生了60年不遇的特大旱灾,全市大面积农田、果园、 Located in the hinterland of Northwest China and the middle of the Silk Road, Zhangye City, Gansu Province is a typical continental arid climate. The city has 26 rivers and streams, all of which belong to the inland Heihe River system. The average annual natural runoff is 2.75 billion m3 Heihe 1.58 billion m3, surface water, groundwater total resources of 2.65 billion m3. Per capita available water resources 1250m3, lower than the national average, belong to the resource-based areas of water shortage. First, the drought situation and its causes Zhangye City in 2001, a rare drought hit 60 years, the city’s large area of ​​farmland, orchards,