苏干湖湿地与奎屯诺尔湿地之间水力联系研究

Study on the hydraulic connection between the Sugan Lake Wetland and the KuitunnuoerWetland

选择位于柴达木西北部苏干湖盆地苏干湖湿地和奎屯诺尔湿地作为研究对象,采用氢氧同位素、地下水动态、地球物理勘探及遥感解译技术与方法,对苏干湖湿地与奎屯诺尔湿地之间的水力联系进行了研究。结果表明:(1)苏干湖湿地地下水主要接受大气降水和侧向径流补给,奎屯诺尔湿地地下水主要接受阿尔金山冰川融水通过地下径流补给;(2)苏干湖湿地与奎屯诺尔湿地之间的青石沟洪积扇存在阻水断层,为不同的水文地质单元,无地下水力联系。研究成果为该流域水资源可持续发展利用提供理论依据和科学支撑。

The Sugan Lake Wetland and Kuitunnuoer Wetland selected as the research objects are located in the Sugan Lake Basin in the Northwest of the Qaidam Basin.Technologies and methods of hydrogen and oxygen isotope,groundwater dynamics,geophysical exploration and remote sensing interpretation were used to study the hydraulic connection between the Sugan Lake Wetland and the Kuitunnuoer Wetland.The results showed that the groundwater of the Sugan Lake Wetland was mainly supplied by atmospheric precipitation and lateral runoff.In contrast,the meltwater from the Altun Mountains glacier supplied that of the Kuitunnuoer Wetland through underground runoff.Furthermore,the alluvial fans of Qingshigou between the Sugan Lake Wetland and the Kuitunnuoer Wetland have faults that behave as aquicludes,which is a different hydrogeological unit and has no underground hydraulic interaction.Therefore,the research results provide a theoretical basis and scientific support for the sustainable development and usage of water resources in the basin.