Temporal hydrochemical dynamics of the River Wensum, UK: Observations from long-term high-resolution monitoring (2011-2018).,Science of the Total Environment

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Temporal hydrochemical dynamics of the River Wensum, UK: Observations from long-term high-resolution monitoring (2011-2018).
Science of the Total Environment ( IF 8.2 ) Pub Date : 2020-03-26 , DOI: 10.1016/j.scitotenv.2020.138253
Richard J Cooper ₁ , Kevin M Hiscock ₁ , Andrew A Lovett ₁ , Stephen J Dugdale ₁ , Gisela Sünnenberg ₁ , Emilie Vrain ₁

Affiliation

In 2010, the UK government established the Demonstration Test Catchment (DTC) initiative to evaluate the extent to which on-farm mitigation measures can cost-effectively reduce the impacts of agricultural water pollution on river ecology whilst maintaining food production capacity. A central component of the DTC platform was the establishment of a comprehensive network of automated, web-based sensor technologies to generate high-temporal resolution (30 min) empirical datasets of surface water, groundwater and meteorological parameters over a long period (2011-2018). Utilising 8.9 million water quality measurements generated for the River Wensum, this paper demonstrates how long-term, high-resolution monitoring of hydrochemistry can improve our understanding of the complex temporal dynamics of riverine processes from 30 min to annual timescales. This paper explores the impact of groundwater-surface water interactions on instream pollutant concentrations (principally nitrogen, phosphorus and turbidity) and reveals how varying hydrochemical associations under contrasting flow regimes can elicit important information on the dominant pollution pathways. Furthermore, this paper examines the relationships between agricultural pollutants and precipitation events of varying magnitude, whilst demonstrating how high-resolution data can be utilised to develop conceptual models of hydrochemical processes for contrasting winter and summer seasons. Finally, this paper considers how high-resolution hydrochemical data can be used to increase land manager awareness of environmentally damaging farming operations and encourage the adoption of more water sensitive land management practices.

中文翻译：

英国温苏姆河的时间水化学动力学：长期高分辨率监测的观测结果（2011-2018年）。

2010年，英国政府建立了示范试验集水区（DTC）计划，以评估农场缓解措施可以在多大程度上经济有效地减少农业水污染对河流生态的影响，同时又保持食品生产能力。DTC平台的主要组成部分是建立一个全面的自动化网络传感器技术网络，以生成长期（2011-2018年）地表水，地下水和气象参数的高温分辨率（30分钟）经验数据集）。本文利用针对温苏姆河的890万水质测量结果，证明了对水化学的长期，高分辨率监测如何提高我们对从30分钟到年度时间表的河流过程复杂时间动态的理解。本文探讨了地下水-地表水相互作用对河道内污染物浓度（主要是氮，磷和浊度）的影响，并揭示了在不同的流态下，不同的水化学缔合如何能够在主要的污染途径上获得重要信息。此外，本文研究了农业污染物与不同程度的降水事件之间的关系，同时说明了如何利用高分辨率数据来开发用于对比冬季和夏季的水化学过程的概念模型。最后，本文考虑了如何使用高分辨率的水化学数据来提高土地管理者对环境破坏性农业经营的认识，并鼓励采用对水更敏感的土地管理实践。

更新日期：2020-03-27

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