城市湖泊水质对道路盐度升高的反应
Ellen Foley1, Alan D Steinman1
1Annis Water Resources Institute, Grand Valley State University, 740 West Shoreline Drive, Muskegon, MI 49441, USA.
The Science of the total environment
|September 22, 2023
概括
道路盐排放增加了城市湖泊中的化物水平,损害了水质,导致缺氧. 建议首先管理,以防止藻类开花,如果盐被移除.
科学领域:
- 环境科学 环境科学
- 临界技术 临界技术
- 生态毒理学 生态毒理学
背景情况:
- 道路盐排放是一个日益严重的全球问题,影响淡水生态系统.
- 化物污染对水的生物,化学和物理性质产生负面影响.
- 湖泊中盐化和缩之间的相互作用尚未得到充分研究.
研究的目的:
- 调查道路除冰盐 () 对城市湖泊水质的影响.
- 评估化物和在淡水生态系统中的联合影响.
- 为湖泊管理策略提供建议.
主要方法:
- 在20个月内监测湖泊和支流中的化物和的度.
- 分析了来自地表和深湖地区的水样.
- 评估的沉积物释放率.
主要成果:
- 化物度经常超过EPA的慢性毒性值 (230 mg/L).
- 高化物水平抑制了湖泊的混合,导致深海区域的缺氧.
- 极高的度 (高达7500μg/L) 积聚在阴部下部.
结论:
- 道路盐的排放大大降低了城市湖泊的水质.
- 随着时间的推移,和化物都积聚在 hypolimnion 中.
- 在处理化物以防止藻类繁殖之前,优先考虑控制至关重要.
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