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陆上流和田路径在营养物质运输中的重要作用
Luwen Wan1, Anthony D Kendall1, Sherry L Martin1
1Department of Earth and Environmental Sciences, Michigan State University, East Lansing, Michigan 48824, United States.
Environmental science & technology
|October 23, 2023
概括
农业排水是大湖地区和污染的主要来源. 表面路径运输了这些营养素的大部分,强调了有针对性的管理策略的需要.
科学领域:
- 环境科学 环境科学
- 水文学的水文学
- 欧洲化研究研究 欧洲化研究
背景情况:
- 和污染对水生生态系统和人类健康构成重大威胁.
- 了解从景观应用到沿海负载的营养物质运输至关重要但复杂.
- 现有的模型往往缺乏对营养物质衰减途径的综合方法.
研究的目的:
- 模拟美国大湖盆地的年度总和负载.
- 以高分辨率识别营养递送热点并量化源/路径贡献.
- 增强和应用空间显式营养源估计和流量 (SENSEflux) 模型.
主要方法:
- 使用增强的SENSEflux模型进行高分辨率 (120米) 模拟.
- 通过排水,陆地排水,地下水流和 septique plumes 显式模拟的营养减弱.
- 来自各种来源和运输途径的量化营养物质负载.
主要成果:
- 农业来源占主导地位,贡献了58%的总 (TN) 和46%的总 (TP).
- 表面通道 (地面流和排水) 是主要的输送路线,占TN的66%和TP的76%.
- 提供了全盆地新型估计,用于非污染性 (TN: 26%;TP: 5%) 和污染性 (TN: 4%;TP: 2%) 地下水营养物供应.
结论:
- 农业实践是大湖地区营养污染的主要驱动因素.
- 表面运输通道对于将营养物质送到海岸线至关重要.
- 该研究为有针对性的营养负载减轻工作提供了有价值的数据,并可以为全球营养管理挑战提供信息.
关键词:
地下水 地下水 地下水这就是的酸.营养物质负载 营养物质负载营养物质建模模型陆上流动是通过陆地流动.是一种的物质.败血虫的羽毛,是因为有了败血虫.源头和路径的来源和路径.瓦排水系统 瓦排水系统更多相关视频
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