气候变化是浅层水库水处理能力的一个重要驱动因素
Danielle S Spence1, Kristin J Painter1, Ali Nazemi2
1School of Environment and Sustainability, Global Institute for Water Security, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
The Science of the total environment
|October 30, 2025
概括
气候变化显著影响饮用水的可处理性,影响度和溶解有机碳 (DOC) 等参数. 了解这些驱动因素对于管理水质至关重要,特别是随着极端天气事件的增加.
科学领域:
- 环境科学 环境科学
- 水资源管理 水资源管理
- 气候学 气候学 气候学
背景情况:
- 饮用水的可处理性受气候和人类活动的影响.
- 浅浅的水库对这些驱动因素特别敏感.
- 水质指标的变化可能很大.
研究的目的:
- 确定饮用水可处理性指标年间变化的驱动因素.
- 评估气候变化 (ENSO,PDO) 和水资源管理对可处理性的影响.
- 通过通用添加模型 (GAMs) 提供这些影响的长期证据.
主要方法:
- 将一般化添加模型 (GAMs) 应用于33年的数据集.
- 对多个饮用水可处理性指标的分析:气味,度,溶解有机碳 (DOC) 和总溶解固体 (TDS).
- 调查气候变化模式 (ENSO,PDO) 和水文/营养管理作为驱动因素.
主要成果:
- 在可治疗性指标中观察到显著的跨年变化,极端年显示平均值的1.5-2.9倍.
- 气候变化 (ENSO,PDO) 显著影响治疗能力,影响范围为长期平均值的0.5-1.7倍.
- 水文管理和营养素也起着关键的作用,影响治疗能力是长期平均值的0.10-1.1倍.
结论:
- 气候变化和水资源管理是导致饮用水处理能力波动的主要原因.
- 浅,干旱的系统表现出高度的气候敏感性,极端条件对水处理构成风险.
- 这项研究为有关源水质量变化的早期预警系统提供了宝贵的见解.
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