在地处中纬度的中亚干旱区内高山纵横，发育了大量的现代冰川，赋予了这一地区独特的自然景观一一荒漠与冰雪并存，暂且称这样的地区为干寒区我国西北干旱地区，冰川融水径流占出山口径流的20％以上．虽然冰川作为固体水库对径流起到年际调节的作用，使西北干旱区河川年径流较 Located in mid-arid arid region of Central Asia, the alpine vertical and horizontal developed a large number of modern glaciers, giving the region a unique natural landscape one by one with the coexistence of desert and ice and snow, for the time being called dry and cold areas in the arid region of northwestern China , Glacial melt runoff accounts for more than 20% of runoff runoff. Although glaciers serve as interannual regulation of runoff as a solid reservoir, annual river runoff in the arid regions of Northwest China