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沿着河流连续线沿着托类光溶解有机物质的时间驱动器

N A Harris¹, J P R Sorensen¹, B Marchant¹

¹British Geological Survey, Maclean Building, Wallingford OX10 8BB, UK.

The Science of the total environment

|April 10, 2024

概括

河流类光 (TLF) 不仅受废水的影响. 地下水和微生物生物质也对TLF动态产生重大影响,这取决于特定地点的特征.

科学领域:

环境化学环境化学
河流生态河流生态
水质监测水质监测

背景情况:

类光 (TLF) 是河流中人为溶解有机物 (DOM) 的常见代理物,主要与废水输入有关.
其他DOM来源,如地下水和浮游生物微生物生物质在推动河流TLF动态中的作用仍然不太清楚.

研究的目的:

调查地下水和浮游生物微生物生物质对河流TLF动态的影响,以及废水输入.
确定泰士河及其支流的对比地点TLF的关键驱动因素.

主要方法:

在15个月内,从泰士河及其支流的19个地点收集了每周的水质数据.
多变量混合线性模型被用来分析TLF和预测变量之间的关系: (废水),酸盐 (地下水),叶绿素-a (植物浮游生物) 和总细菌细胞计数 (TCC).
预测变量是根据统计学显著性在逐步程序中选择的.

主要成果:

在89%的现场模型中,废水指标显著.
在53%的模型中,地下水显著影响了TLF,在基础流量高的地区,地下水经常起到稀释因素的作用.
总细菌细胞计数 (TCC) 在32%的地点与TLF积极相关,特别是在污水影响较低的更多农村地区. 植物浮游生物质 (叶绿素-a) 的影响很小,仅出现在11%的模型中.

结论:

河流TLF动态是复杂的,由废水,地下水和浮游生物微生物来源的相互作用驱动.
这些来源的相对重要性高度依赖于特定地点的特征,包括水文条件和土地利用.
在某些河流环境中,地下水和微生物生物质对TLF的影响可能与废水一样,甚至更大.

关键词:

捕捞区的特点捕捞区的特点光有机物质是一种光有机物质.在现场微生物生产.微生物加工是一种微生物加工.类似于型的托芬.

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