School of Geography and Environmental Science, Faculty of Environmental and Life Sciences, University of Southampton, Highfield, Southampton, SO17 1BJ, UK.
School of Geography and Environmental Science, Faculty of Environmental and Life Sciences, University of Southampton, Highfield, Southampton, SO17 1BJ, UK.
J Environ Manage. 2021 Jul 1;289:112555. doi: 10.1016/j.jenvman.2021.112555. Epub 2021 Apr 10.
The regulatory management of river water quality requires measurements of phosphorus that are operationally viable and meaningful in terms of insight into its effects. This need is a particular concern in globally rare and ecologically sensitive chalk streams. P data pertaining to rivers are commonly limited to soluble reactive P; other fractions of P may be of concern but are not routinely monitored. This study seeks to establish the nature and extent of non-regulated forms of P in UK chalk streams. Whilst soluble reactive P in two southern English chalk streams was found to comprise the majority of reactive P in surface waters in the majority of samples, 15-20% of the total reactive P was within other size fractions greater than 0.22 μm. The contribution of reactive P to the total P was highly variable. We conclude that, with some adjustments, the established method of regulatory monitoring of P in UK rivers is viable and valuable. In cases where the levels of reactive P are not consistent with ecological status and/or expected outcomes of programmes of measures, we recommend that targeted analysis of non-regulated forms of P is undertaken as a means to guide and focus management interventions.
河流水质的监管管理需要进行磷的测量，这些测量在了解其影响方面具有可操作性和实际意义。这种需求在全球罕见且生态敏感的白垩溪流中尤为重要。通常，有关河流的磷数据仅限于可溶反应性磷; 其他磷的分数可能也值得关注，但未进行常规监测。本研究旨在确定英国白垩溪流中非监管形式的磷的性质和范围。虽然在两条英国南部的白垩溪流中发现，可溶反应性磷在大多数样本的地表水的大部分反应性磷中占主导地位，但 15-20%的总反应性磷存在于大于 0.22 μm 的其他粒径分数中。反应性磷对总磷的贡献具有高度的可变性。我们得出的结论是，在对英国河流中磷的监管监测方法进行一些调整后，该方法具有可行性和价值。在反应性磷的水平与生态状况不一致且/或预期措施方案的结果不一致的情况下，我们建议进行非监管形式的磷的针对性分析，作为指导和集中管理干预的手段。
