The groundwater cycle pattern in the arid and semi-arid regions is drastically affected by both natural condition changes and human activities, resulting in serious eco-geological environmental problems. This paper selected the south edge of the Junggar basin as a pilot area for the basin-scale assessment of groundwater renewal capacity. Assessment indicator system was first established, assessment units were then constructed, and the Analytic Hierarchy Process method was used to identify the weights of the assessment indicators. The first three indicators are natural recharge ratio, groundwater residence time, and balance ratio between groundwater recharge and exploration, respectively. Two types of environmental assessment models, including the comprehensive index model and the fuzzy comprehensive model, were used and the results determine that low-lying intermountain areas and alluvial–proluvial piedmont plains have stronger groundwater renewal capacity, whereas that of the alluvial plain is much weaker. Second, at the typical watershed scale, the Manasi watershed was adopted as the study area, and numerical simulation method was used to assess the groundwater renewal capacities of intermountain low-lying land and the pediment alluvial–proluvial plain. They are found to have renewal periods of about 66.95 years and 25.05 years, respectively. These values are favorably compared to the results of isotopic analysis, which is corresponding to 46 years and 30 years, respectively. At last, four schemes were put forward to improve the regulation and storage capacity in different segment of Manasi River watershed. The results not only provide key guidance for reasonable groundwater resource exploitation and eco-environmental protection, but also offer a model for sustainable groundwater utilization for similar northwestern districts in China or other world similar districts.

中文翻译：

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准gar尔盆地南缘区域地下水循环模式及更新能力评估

干旱和半干旱地区的地下水循环模式受到自然条件变化和人类活动的极大影响，从而导致严重的生态地质环境问题。本文选择准gar尔盆地南缘作为流域规模地下水更新能力评估的试验区。首先建立评估指标体系，然后建立评估单位，然后使用层次分析法确定评估指标的权重。前三个指标分别是自然补给比，地下水停留时间和地下水补给与勘探之间的平衡比。综合指标模型和模糊综合模型两类环境评估模型，研究结果表明，低洼的山间地区和冲积-冲积山前平原的地下水更新能力较强，而冲积平原的地下水更新能力较弱。其次，在典型的分水岭规模上，以玛纳斯分水岭为研究区域，并采用数值模拟方法评估山间低洼地和三角洲冲积平原区的地下水更新能力。发现它们的更新周期分别为大约66.95年和25.05年。将这些值与同位素分析的结果进行了比较，同位素分析的结果分别对应于46年和30年。最后提出了四个方案，以提高玛纳斯河流域不同段的调节和蓄水能力。