通过结合水力动力学和水化学方法来确定连接的灌湖-地下水系统的相互作用
MuRong Li1,2,3, Jianmin Bian1,2,3, Yu Wang4,5,6
1Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China.
概括
了解湖泊-地下水相互作用对于管理稀缺的水资源至关重要. 这项研究揭示了复杂的交换,地下水在某些地区补充湖泊,湖水在其他地方补充地下水,受灌回流的影响.
科学领域:
- 环境科学 环境科学
- 水文地质学 水文地质学
- 水资源管理 水资源管理
背景情况:
- 在灌期间,湖泊和地下水的相互作用是复杂和动态的.
- 同时的自然和人类活动掩盖了这些相互作用.
- 识别这些交换对于链接系统中的水资源管理至关重要.
研究的目的:
- 分析湖泊和地下水的水力动力学,水化学和同位素特性.
- 揭示湖泊地下水相互作用的空间分布和性质.
- 评估灌回流对地表水质量的影响.
主要方法:
- 使用的水位,水化学和氧稳定同位素数据.
- 应用主要组件分析 (PCA) 和层次聚类用于相互作用识别.
- 采用混合SIAR模型来量化充电缴费率.
主要成果:
- 查甘湖和地下水的水化学类型主要是HCO3-Na.
- 电导率 (EC) 和同位素特征 (δ18O) 表示特定位置的相互作用.
- 地下水充电湖附近的胡林河-洪子池;湖水补充其他地方的地下水.
- 灌回流对地表水的EC和 δ18O变化产生重大影响.
结论:
- 湖泊地下水的相互作用在地理上是不一致的,具有双向流动.
- 地下水对新苗池的湖泊补充有约51%的贡献.
- 湖泊水对其他部分的地下水补充有25-52%的贡献.
- 准确识别这些相互作用对于管理水资源短缺和农业污染至关重要.
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