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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Connectivity as an emergent property of geomorphic systems
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Connectivity as an emergent property of geomorphic systems

机译：作为地貌系统的紧急财产的连通性

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Connectivity describes the efficiency of material transfer between geomorphic system components such as hillslopes and rivers or longitudinal segments within a river network. Representations of geomorphic systems as networks should recognize that the compartments, links, and nodes exhibit connectivity at differing scales. The historical underpinnings of connectivity in geomorphology involve management of geomorphic systems and observations linking surface processes to landform dynamics. Current work in geomorphic connectivity emphasizes hydrological, sediment, or landscape connectivity. Signatures of connectivity can be detected using diverse indicators that vary from contemporary processes to stratigraphic records or a spatial metric such as sediment yield that encompasses geomorphic processes operating over diverse time and space scales. One approach to measuring connectivity is to determine the fundamental temporal and spatial scales for the phenomenon of interest and to make measurements at a sufficiently large multiple of the fundamental scales to capture reliably a representative sample. Another approach seeks to characterize how connectivity varies with scale, by applying the same metric over a wide range of scales or using statistical measures that characterize the frequency distributions of connectivity across scales. Identifying and measuring connectivity is useful in basic and applied geomorphic research and we explore the implications of connectivity for river management. Common themes and ideas that merit further research include; increased understanding of the importance of capturing landscape heterogeneity and connectivity patterns; the potential to use graph and network theory metrics in analyzing connectivity; the need to understand which metrics best represent the physical system and its connectivity pathways, and to apply these metrics to the validation of numerical models; and the need to recognize the importance of low levels of connectivity in
机译：连接描述了诸如河道和河流网络内的山坡和河流或纵向段之间的材料转移效率。作为网络的地貌系统的表示应该认识到隔间，链接和节点在不同尺度上表现出连接。地貌中连接性的历史底划涉及对地貌系统的管理和将表面过程连接到地形动力学的观察。目前在地貌连接中的工作强调水文，沉积物或景观连接。可以使用各种指标检测连接的签名，这些指示器可以从当代工艺变化到地层记录或空间度量，例如沉积物收益率，包括在不同时间和空间尺度上运行的地貌过程。测量连接的一种方法是确定感兴趣的现象的基本时间和空间尺度，并以足够大的基本尺度进行测量以可靠地捕获代表性样本。另一种方法旨在通过在宽范围的尺度上应用相同的度量或使用统计测量来表征在宽范围的尺度上或使用横跨尺度的频率分布的统计测量来表征相同的度量来表征连接程度。识别和测量连接可用于基本和应用的地貌研究，我们探讨了河流管理连接的影响。优异研究的共同主题和想法包括;增加了解捕获景观异质性和连通模式的重要性;在分析连接中使用曲线图和网络理论度量的潜力;需要了解哪些度量最佳代表物理系统及其连接路径，并将这些指标应用于数值模型的验证;并且需要认识到低水平的连接的重要性

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