Assessing placement bias of the global river gauge network
Assessing placement bias of the global river gauge network
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DOI：
10.1038/s41893-022-00873-0
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发表时间：
2022-04-25
影响因子：
27.6
通讯作者：
Olden, Julian D.
中科院分区：
文献类型：
--
作者：
Krabbenhoft, Corey A.;Allen, George H.;Olden, Julian D.
从河流测量仪收集的水文数据为分配水资源、保护生态系统和预测干旱和洪水发生的关键决策提供信息。目前的全球河流测量网络偏向于大型常年河流，需要进行战略调整，以全面了解地球上的河流。了解河流的流向和流向对于管理淡水生态系统至关重要。然而，全球河流流量测量站分布稀疏，可能无法捕获河流网络特性和人为影响的多样性。在这里，我们评估的位置偏差的全球流计数据集的代表性的社会生态，水文，气候和地形多样性的河流。我们发现，测量仪位于大，常年河流排水更多的人类居住的流域。水位计稀疏地分布在保护区和具有非常年水流特征的河流中，这两者对淡水养护和水安全问题都至关重要。全球测量网络的地理位置与溪流和河流的广泛多样性之间的差异削弱了我们理解关键水文过程和做出明智的水资源管理和政策决定的能力。我们的研究结果强调，需要通过投资和优先安装新的计量站，采用替代水监测策略，推进水文建模创新，以及增加当地和区域计量数据的可访问性来解决当前的计量位置偏差，以支持人类应对当今和未来的水挑战。
Hydrologic data collected from river gauges inform critical decisions for allocating water resources, conserving ecosystems and predicting the occurrence of droughts and floods. The current global river gauge network is biased towards large, perennial rivers, and strategic adaptations are needed to capture the full scope of rivers on Earth.Knowing where and when rivers flow is paramount to managing freshwater ecosystems. Yet stream gauging stations are distributed sparsely across rivers globally and may not capture the diversity of fluvial network properties and anthropogenic influences. Here we evaluate the placement bias of a global stream gauge dataset on its representation of socioecological, hydrologic, climatic and physiographic diversity of rivers. We find that gauges are located disproportionally in large, perennial rivers draining more human-occupied watersheds. Gauges are sparsely distributed in protected areas and rivers characterized by non-perennial flow regimes, both of which are critical to freshwater conservation and water security concerns. Disparities between the geography of the global gauging network and the broad diversity of streams and rivers weakens our ability to understand critical hydrologic processes and make informed water-management and policy decisions. Our findings underscore the need to address current gauge placement biases by investing in and prioritizing the installation of new gauging stations, embracing alternative water-monitoring strategies, advancing innovation in hydrologic modelling, and increasing accessibility of local and regional gauging data to support human responses to water challenges, both today and in the future.