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Prediction of Reference Phosphorus Concentrations in Swedish Lakes

机译：瑞典湖泊中参考磷浓度的预测

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摘要

The relationship between total phosphorus (TP) and chemical, climatic, morphological, and geographic variables was examined for over a thousand reference lakes across Sweden. A significant relationship was found between TP and both absorbance of irradiance (at 420 nm, filtered) and altitude for all lakes. These two variables alone, however, were not able to adequately predict TP concentrations in naturally turbid lakes. A natural particulate matter factor (PM_n) was developed as part of this study to incorporate the effect of natural suspended matter on lake phosphorus concentration. Variability in TP concentration was well explained with the addition of PM_n to the model (R~2 = 0.71) even though conditions external and internal to the lakes varied greatly. The ability of the three parameter model to identify culturally eutrophic systems was then successfully tested using a data set of lakes with known anthropogenic phosphorus loads. Thus, the model allows for estimation of reference TP concentration and by extension can be used to identify when a reference concentration has been exceeded due to anthropogenic phosphorus loading. The model output also provides a realistic end point to which phosphorus concentrations should be reduced to achieve a natural trophic state in both dear water and naturally turbid lakes.
机译：在瑞典的1000多个参考湖泊中，研究了总磷（TP）与化学，气候，形态和地理变量之间的关系。 TP与所有湖泊的辐照度（在420 nm，已过滤）的吸光度和海拔高度之间均存在显着的关系。但是，仅这两个变量并不能充分预测自然浑浊湖泊中的总磷浓度。作为本研究的一部分，开发了一种天然颗粒物因子（PM_n），以纳入天然悬浮物对湖磷浓度的影响。尽管湖泊外部和内部的条件变化很大，但通过在模型中添加PM_n（R〜2 = 0.71）可以很好地解释TP浓度的变化。然后使用已知的人为磷负荷的湖泊数据集成功测试了三参数模型识别文化富营养化系统的能力。因此，该模型允许估算参考TP浓度，并且可以用于确定何时由于人为磷负荷而超出参考浓度。模型输出还提供了一个现实的终点，应该降低磷的浓度，以在昂贵的水域和自然浑浊的湖泊中实现自然的营养状态。

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  • 来源
    《Environmental Science & Technology》 |2013年第4期|1809-1815|共7页
  • 作者

    Brian J. Huser; Jens Foelster;

  • 作者单位

    Swedish University of Agricultural Sciences, Department of Aquatic Sciences and Assessment, Box 7050, 75007 Uppsala, Sweden;

    Swedish University of Agricultural Sciences, Department of Aquatic Sciences and Assessment, Box 7050, 75007 Uppsala, Sweden;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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