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在水化学数据分析的基础上,该文运用~2H、~3H、~(18)O、~(14)C等同位素对玛纳斯河流域平原区地下水的补给来源、地表水与地下水以及地下水内部的相互关系进行了研究。研究表明:1)从平原区上游至下游,地表水、地下水的TDS值逐渐升高(或平原区中游至下游基本不变)。随着TDS的增大,水化学类型由HCO_3—Ca—Mg水向SO_4—Cl—Na水演化,水质变差。2)地表水、浅层地下水和深层地下水的δ~2H、δ~(18)O呈现出明显的分布规律。3)平原区地下水主要补给来源为南部山区的大气降水,地表水是联系南部山区大气降水与平原区地下水的重要纽带。4)研究区内存在一条经由地表水与年龄相对较老的深层地下水的主要混合线。平原区上游的地下水主要由大气降水、地表水(或包括年龄相对较老的深层地下水)等经这条混合线混合形成;平原区中游的地下水主要由平原区上游的地下水与年龄相对较老的深层地下水等经这条混合线混合而成;平原区下游的浅层地下水主要由平原区中游的地下水经蒸发作用形成;而深层地下水则主要由混合作用形成。
Based on the analysis of water chemistry data, this article uses ~ 2H, ~ 3H, ~ (18) O, ~ (14) C isotopes to supply groundwater in the Manas River Basin plain area, surface water and groundwater and groundwater Internal interrelationships were studied. The results show that: 1) TDS values of surface water and groundwater gradually increase from the upper reaches to the lower reaches of the plain (or remain unchanged from the middle reaches of the plain to the lower reaches). With the increase of TDS, the chemical types of water evolve from HCO 3 -Ca-Mg water to SO 4 -Cl-Na water and the water quality deteriorates. 2) δ ~ 2H, δ ~ (18) O of surface water, shallow groundwater and deep groundwater show obvious distribution. 3) The main supply source of groundwater in the plain area is the atmospheric precipitation in the southern mountainous areas. Surface water is an important link between the atmospheric precipitation in the southern mountains and the groundwater in the plain area. 4) There is a major mixing line within the study area via surface water and deeper age groundwater. The groundwater in the upper reaches of the plain is mainly composed of atmospheric precipitation, surface water (or deep-water groundwater of relatively older age), etc. The groundwater in the middle reaches of the plain is mainly composed of groundwater in the upper reaches of the plain and relatively older Deep groundwater is mixed by this mixing line. Shallow groundwater in the lower reaches of the plain area is mainly formed by evaporation of groundwater in the middle reaches of the plain area while deep groundwater is mainly formed by mixing.