气候因素对一个大型环保湖的内部P动态的重要性越来越大
James Thompson1, Yvonne McElarney2, Brian Rippey3
1Agri-Food and Biosciences Institute, Newforge Lane, Belfast, UK; School of Geography and Environmental Sciences, Ulster University, Coleraine, UK.
The Science of the total environment
|June 24, 2025
概括
湖泊沉积物的遗留 (P) 阻碍了水质的恢复. 尼格湖 (Lough Neagh) 的内部P载荷显著增加,由于沉积物P释放的增加,几十年来一直无法实现水质目标.
科学领域:
- 环境科学 环境科学
- 临界技术 临界技术
- 水质管理水质管理
背景情况:
- 湖泊沉积物中的遗留 (P) 构成了通过流域管理改善水质的重大挑战.
- 了解内部储层的长期行为对于有效的湖泊管理和设定现实的恢复目标至关重要.
研究的目的:
- 为了描述Lough Neagh湖内部负荷的长期变化.
- 评估湖泊温度变化和水域输入对内部动态的影响.
- 为了评估内部负荷对湖水质量的影响,超过五十年.
主要方法:
- 利用稳定状态的实证湖泊模型来分析的动态.
- 在五十年的时间里,编制和分析了Lough Neagh的质平衡.
- 研究了湖水温度,外部负荷和pH对沉积物释放的影响.
主要成果:
- 20世纪90年代中期,Lough Neagh湖的内部含量迅速增加,并且一直保持在较高水平.
- 在研究期的后半年,年平均总 (TP) 度超过30μg L−1以上.
- 净内部负荷从243增加到577毫克TP m−2 yr−1,贡献25%至47%的年度平均湖泊TP度.
结论:
- 由温度,外部负荷和pH驱动的高内部负荷将持续存在,几十年来阻碍水质的恢复.
- 从沉积物中回收的遗留显著阻碍了短期到中期水质目标的实现.
- 可持续的湖泊管理需要解决内部源,同时减少外部负载.
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