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评估气候和管理对水库水质的影响,使用环境流体动力学代码进行评估
Qingqing Sun1, Zhifeng Yan1, Jingfu Wang2
1Institute of Surface Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China.
The Science of the total environment
|July 12, 2024
概括
气候变化,特别是气候变暖,通过增加营养水平和藻类,加剧了洪峰湖的肥沃化. 更严格的和减少措施对于管理水质和减轻健康风险至关重要.
科学领域:
- 环境科学 环境科学
- 水质管理水质管理
- 临界技术 临界技术
背景情况:
- 化对淡水生态系统构成重大威胁,由营养污染和气候变化驱动.
- 薄弱分层的水库,如洪峰湖,特别容易受到水质退化的影响.
- 了解气候,水文和营养动态的相互作用对于有效的水资源管理至关重要.
研究的目的:
- 调查气候变化和人类活动对洪峰湖水质的影响.
- 分析各种环境管理策略的有效性,以减轻轻肥胖的风险.
- 量化不同环境因素对关键水质指标的影响.
主要方法:
- 利用环境流体动力学代码 (EFDC) 来构建和验证一个全面的模型.
- 综合气候,水文和水质数据用于场景分析.
- 模拟了各种条件,包括改变风速,温度,辐射,降雨,排放和营养投入.
主要成果:
- 气候变暖和降雨量减少加剧了肥胖化,增加了热量状态指数 (TSI) 和叶绿素-a (Chl-a).
- 减少的太阳辐射最初增加了酸盐,其次是,并且随着降雨量的改变而显著增加了总酸盐.
- 营养物质减少和流量管理场景改善了水质;然而,由于内部营养物质释放增加,极端风速放大了TSI.
结论:
- 气候变化,特别是气候变暖,对低分层水库的饮用水质量和健康构成重大威胁.
- 目前的营养减少措施可能不足,需要对 (N) 和 (P) 输入进行更严格的控制.
- 综合建模为在脆弱的水生生态系统中制定有效的水质管理策略提供了宝贵的见解.
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