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在气候变化下,湖泊和水库中的水停留时间影响营养稳定性的下降
Yi Yin1, Ke Yang1, Mingyuan Gao2
1Key Laboratory of Lake and Watershed Science for Water Security, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
The Science of the total environment
|September 8, 2024
概括
在湖泊和水库中,较长的水停留时间 (WRT) 与水质稳定性降低和营养度增加有关. 极端气候事件加剧了WRT波动,影响了和水平.
科学领域:
- 环境科学 环境科学
- 水文学的水文学
- 生态生态学 生态生态学
背景情况:
- 水质稳定对饮用水和生态系统至关重要,特别是随着极端气候事件的增加.
- 水质稳定性和水停留时间 (WRT) 之间的联系需要进一步研究.
研究的目的:
- 探索湖泊和水库中水质稳定性 (和度) 和WRT之间的关系.
- 检查水文气象学因素,地形学和土地利用对WRT的影响.
- 建立气候变化与营养稳定之间的联系.
主要方法:
- 分析了来自11个湖泊和49个水库 (2010-2022) 的 (N) 和 (P) 度数据.
- 评估水文气象特征,水体/捕捞区地形学以及土地利用对WRT的影响.
- 相关性分析以确定WRT,营养稳定性和影响因素之间的关系.
主要成果:
- 在N和P稳定性和WRT之间存在显著的相关性;较长的WRT对应于稳定性下降和营养水平更高.
- 水文气象因素,特别是极端干旱期间的降雨,是WRT的主要驱动因素.
- 加剧的极端气候事件增加了WRT波动,导致N和P度更高,水质稳定性降低.
结论:
- WRT是影响湖泊和水库营养稳定的关键因素.
- 气候变化和极端天气事件显著影响WRT和水质.
- 考虑气象,水文和生态恢复的综合管理策略对于提高水质稳定性至关重要.
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