Study on multi-level groundwater cycle pattern in the western plain of Yili River Valley
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Abstract:
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
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