黄河中部的再造森林使得地下水充满了河流水的主要来源
Ruiqiang Yuan1, Siyu Guo2, Zhibin Li3
1School of Environment and Resource Sciences, Shanxi University, Taiyuan, 030006, China; Shanxi Laboratory for Yellow River, Shanxi University, Taiyuan, 030006, China.
Journal of environmental management
|April 12, 2025
概括
地下水在很大程度上补充了黄河,特别是在金山峡谷,低温交换发挥了关键作用. 土地利用变化和采矿活动对这个重要的水资源构成风险.
科学领域:
- 环境科学 环境科学
- 水文地质学 水文地质学
- 河流生态 河流生态
背景情况:
- 黄河中部地区面临沉积物挑战,影响下游生态系统.
- 显而易见的是,由于"谷物到绿色"等保护项目的水文变化.
- 在该地区,地下水与河流的相互作用仍未得到充分理解.
研究的目的:
- 量化黄河与金山峡谷地下水之间的水交换.
- 评估地下水对河流补水的贡献.
- 评估人类活动对河流地下水系统的影响.
主要方法:
- 使用主要离子水化学分析.
- 应用了修订后的-222 (Rn) 质量平衡方法.
- 识别了失去和获得的河流流程和量化的汇率.
主要成果:
- 证实了大量的hyporheic交换,平均为222Rn余额贡献了44%.
- 确定了四个失去的和七个获得的河流部分,透深度高达~100米.
- 地下水排放量 (88.19 m3/s) 占河流补充量的80%,超过支流输入量.
结论:
- 地下水是研究区域黄河充电的主要来源,超过了支流流.
- 土地利用的变化减少了河流的流量,增加了对地下水的依赖.
- 天然气开采和煤炭开采对地下水质量和黄河的健康构成重大威胁.
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