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使用融合交叉映射检测非洪平地湿地水文连接的因果关系
Sangchul Lee1, Byeongwon Lee2, Junga Lee3
1Department of Environmental Engineering, University of Seoul, Dongdaemun-gu, Seoul, 02504, Republic of Korea. sangchul.lee84@gmail.com.
Scientific reports
|October 11, 2023
概括
地下水 (GW) 连接非洪水平原湿地 (NFWs) 与下游水 (DW),建立关键的水文连接. 这项研究证实NFWs通过GW影响DW,强调NFW保护的重要性.
科学领域:
- 水文学的水文学
- 环境科学 环境科学
- 生态生态学 生态生态学
背景情况:
- 人们越来越多地认识到非平原湿地 (NFW) 和下游水 (DW) 之间的水文连接.
- 由于复杂的水文过程和季节性变化,通过地下水 (GW) 路径的连接仍然不太了解.
研究的目的:
- 通过GW调查和确认NFW和DW之间的因果水文关系.
- 应用一种因果推理方法,即合交叉映射 (CCM),以检测这些复杂的相互作用.
主要方法:
- 利用了融合交叉映射 (CCM),一种用于检测动态系统中因果关系的非线性方法.
- 分析了NFW (井) 和GW (皮耶索米) 的水位数据,以及DW的基流数据.
- 从邻近地区采用伪DW来验证因果关系的发现并排除虚假的相关性.
主要成果:
- 证实了一个单向的因果流从NFW到GW,然后到DW (NFW → GW → DW).
- 没有观察到反向因果关系 (DW → NFW),这表明NFW在这种情况下是来源,而不是水槽.
- 发现直接的因果关系 (NFW → GW,GW → DW) 显示较短的时间滞后 (3天NFW → DW) 比间接的,与CCM假设一致. 伪DW分析显示没有显著的滞后相互作用.
结论:
- 这项研究提供了强有力的证据,证明了地下水介导的NFW和DW之间的水文连接.
- 这些发现强调了NFW在维护下游水资源方面的关键作用.
- 结果支持NFW保护和水资源可持续性管理战略的必要性.
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