在公河三角洲地区的多个含水层中,利用可解释的机器学习模型对地下水盐度的空间预测
Heewon Jeong1, Ather Abbas2, Hyo Gyeom Kim1
1Future and Fusion Lab of Architectural, Civil and Environmental Engineering, Korea University, Seoul 02841, South Korea.
Water research
|September 14, 2024
概括
机器学习模型使用化物,pH和二碳酸盐指标准确预测了公河三角洲地下水的盐度. 影响盐度的关键因素包括地下水的使用,为有效的水资源管理提供了洞察力.
科学领域:
- 环境科学 环境科学
- 水文地质学 水文地质学
- 数据科学数据科学数据科学
背景情况:
- 地下水化是沿海地区,特别是公河三角洲的一个重大挑战.
- 由于复杂的地下水系统,预测盐化是复杂的.
研究的目的:
- 预测地下水的盐度,并确定公河三角洲多层含水层的因果因素.
- 评估各种机器学习模型用于盐度预测的性能.
主要方法:
- 应用了九个基于决策树的机器学习模型,使用现场数据.
- 利用了13个输入变量,包括天气,水地质学,水位,地下水使用和距离水源的距离.
- 采用模型解释技术来量化因子意义.
主要成果:
- 额外的树木模型在预测化物 (Cl-) 度 (R2=0.94) 中表现出优异的性能.
- 包装和随机森林模型在预测pH (R2=0.67) 和碳酸 (HCO3-) (R2=0.78) 度方面表现出色.
- 模型解释发现地下水的使用是影响特定含水层盐度的重要因素.
结论:
- 机器学习模型提供了对公河三角洲地下水盐度的准确空间预测.
- 了解关键影响因素,特别是人工地下水使用,对于管理至关重要.
- 这些发现可以为有效的地下水管理政策提供信息,以减轻盐化.
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