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提高对水生系统DOM命运的洞察力:引入FLOTATION模型

Jingshui Huang¹, Hailong Yin², Tobias Houska³

¹Chair of Hydrology and River Basin Management, Technical University of Munich, Arcisstrasse 21, Munich 80333, Germany.

|June 20, 2024

概括

浮动模型通过结合光降解和初级生产来改善水质模拟,从而更好地了解溶解有机物 (DOM) 在河流中的命运和运输.

科学领域:

环境化学环境化学
水上科学水上科学
水质建模水质建模

背景情况:

传统的水质模型不能充分反映溶解有机物 (DOM),特别是其生物耐火分数.
像光降解这样的关键DOM过程经常被遗漏在现有的水质模型中.
需要一个更全面的模型来准确模拟水生系统中的DOM动态.

研究的目的:

开发和应用FLOTATION模型进行DOM源,分布和命运的详细分析.
将生物降解,光降解和初级生产纳入DOM建模.
评估这些过程对南飞河的DOM组件的影响.

主要方法:

开发了FLOTATION (光家庭运输和转型) 模型.
在低流量条件下将模型应用于南飞河.
通过EEM-PARAFAC.使用纵向测量通过EEM-PARAFAC.识别的类似体 (C1-C4) 和类似蛋白质 (C5) DOM组件进行了模型校准.

主要成果:

浮动模型准确地复制了所有DOM组件的纵向变化.
光降解显著减少了15-21%的状DOM组件 (C1,C2,C4).
藻类初级生产对下游DOM装载贡献了18%,突出了其作为本土来源的作用.

结论:

浮动模型为理解DOM命运和运输提供了一个更强大的框架.
光降解和初级生产是影响河流DOM动态的关键过程.
该模型增强了在水生环境中对DOM的综合评估.

关键词:

生物降解生物降解溶解的有机物质是有机物质.在 EEM-PARAFACAC 中.这是一种类似于木的木.照相降解是一种光降解.初级生产的主要产品.水质建模水质建模

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