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首页> 外文期刊>Journal of soil & sediments >The evolution of sediment source fingerprinting investigations in fluvial systems
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The evolution of sediment source fingerprinting investigations in fluvial systems

机译：河流系统泥沙源指纹图谱研究的进展

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Purpose This contribution reviews the evolution of sediment source fingerprinting investigations since the beginning of such studies in the mid-1970s. Attention is directed to key advances and developments during this period, to the present status of source fingerprinting techniques and to the scope for future development. Scope An analysis of the number of papers reporting sediment source fingerprinting investigations or associated methodologies published annually since the mid-1970s to date indicates that the number of such papers has increased near exponentially. The key drivers behind the expansion of such work are examined and linked to both the progress of academic enquiry and the need to support the development of sediment management strategies aimed at countering environmental problems associated with fine sediment. Instead of providing a chronological review of the various advances and developments evidenced by the expanding literature, attention focuses on seven key areas of development which are seen as having together contributed to the current state of the art. These include the expanding range of fingerprint properties employed; the use of statistical tests to confirm the ability of particular fingerprint properties to discriminate between potential sources and to assist in the selection of the 'best' properties for inclusion in the final composite fingerprint; the use of numerical mixing models to obtain quantitative estimates of the relative contribution of different sources; recognition of the need to confirm the conservative behaviour of the sediment properties employed as fingerprints and to take account of contrasts in grain size composition and organic matter content between source material and target samples; extension of the approach to include a greater range of targets and potential sources; addition of a temporal dimension, in order to consider changes in sediment source through time; and recognition of the need to direct increased attention to the uncertainty associated with the results of such studies. At the present time, sediment source fingerprinting techniques can be seen as being in a transition from a scientific tool to an operational or management tool, but further development will be required before successful transition to the latter can be fully achieved.
机译：目的这项研究回顾了自1970年代中期此类研究开始以来的沉积物来源指纹研究的演变。注意在此期间的主要进步和发展，源指纹技术的现状以及未来发展的范围。范围对自1970年代中期至今每年发表的报告沉积物来源指纹研究或相关方法的论文数量进行的分析表明，此类论文的数量已成倍增加。研究了扩大此类工作的主要驱动力，并将其与学术研究的进展以及支持发展旨在应对与细沙相关的环境问题的沉积物管理策略的需求联系在一起。与其按时间顺序回顾不断扩大的文献所证明的各种进展，不如将注意力集中在七个关键的发展领域上，这些领域被认为共同促进了当前的技术发展水平。这些包括所采用的指纹特性的扩展范围；使用统计测试来确认特定指纹属性区分潜在来源的能力，并协助选择“最佳”属性以包含在最终复合指纹中；使用数值混合模型来获得不同来源相对贡献的定量估计；认识到需要确认用作指纹的沉积物特性的保守行为，并考虑到原料和目标样品之间的粒度组成和有机物含量的对比；扩大方法范围，以包括更大范围的目标和潜在来源；增加时间维度，以便考虑随时间变化的沉积物来源；并认识到有必要更加重视与此类研究结果相关的不确定性。目前，沉积物源指纹技术可以看作是从科学工具向操作或管理工具的过渡，但是在完全实现向后者的成功过渡之前，还需要进一步开发。

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