分析伊犁河谷西部平原区地质条件与水文地质条件, 结合 2017、2018 年研究区内采集的 220 组地表水及地下 水样品的水化学、D、18O、3 H 及 CFCs 等指标测试结果, 以伊犁河南北岸 2 个典型剖面为重点, 分析了区域地下水环境同位素和水化学的空间分布特征。伊犁河谷西部平原区地下水主要接受山区降水补给, 地形地貌和含水层岩性变化是控制区内地下水循环最主要的影响因素, 区内地下水循环表现为多级次的循环演化特点, 以伊犁河为界, 伊犁河谷西部平原区南北两侧地下水水流系统可划分为局部、中间和区域等 3 个级次的地下水流系统。不同级次的 地下水水流系统在循环范围和深度上存在一定差异。

The spatial distribution characteristics of environmental isotopes and hydrochemistry in the regional groundwater were analyzed based on the analysis of geological and hydrogeological conditions, combined with the results of hydrochemistry , D, 18 O, 3 H, 14 C and CFCs of 220 sets of surface water and groundwater samples collected in 2017 and 2018 at the western plain of the Yili River and two typical sections in the north and south banks of Yili River Valley. Groundwater in the western plain of Yili River Valley was mainly supplied by precipitation from mountain areas. The change of to pography , geomorphology and aquifer structure was the most important factor to control groundwater circulation. The groundwater circulation showed multi-level cyclic evolut ion char acteristics. The groundwater flow systems on the north and south sides of the western plain of Yili River Valley can be divided into local, intermediate and regional groundwater flow systems. There are some differences in the circulation range and depth of different groundwater flow systems

中国地质调查局地质调查项目( 121201011000150021)