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The search for a topographic signature of life

机译：寻找生命的地形特征

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Landscapes are shaped by the uplift, deformation and breakdown of bedrock and the erosion, transport and deposition of sediment. Life is important in all of these processes. Over short timescales, the impact of life is quite apparent: rock weathering, soil formation and erosion, slope stability and river dynamics are directly influenced by biotic processes that mediate chemical reactions, dilate soil, disrupt the ground surface and add strength with a weave of roots. Over geologic time, biotic effects are less obvious but equally important: biota affect climate, and climatic conditions dictate the mechanisms and rates of erosion that control topographic evolution. Apart from the obvious influence of humans, does the resulting landscape bear an unmistakable stamp of life? The influence of life on topography is a topic that has remained largely unexplored. Erosion laws that explicitly include biotic effects are needed to explore how intrinsically small-scale biotic processes can influence the form of entire landscapes, and to determine whether these processes create a distinctive topography.
机译：景观是由基岩的隆起，变形和破坏以及沉积物的侵蚀，运输和沉积所形成的。生活在所有这些过程中都很重要。在短时间内，生命的影响是显而易见的：岩石的风化，土壤形成和侵蚀，斜坡稳定性和河流动力学受到生物过程的直接影响，这些过程介导化学反应，膨胀土壤，破坏地面并通过编织编织增加强度根。在地质时期内，生物影响不太明显，但同等重要：生物群影响气候，而气候条件决定了控制地形演变的侵蚀机制和速率。除了人类的明显影响之外，由此产生的景观是否还具有明显的生命印记？生活对地形的影响是一个尚未广泛探讨的话题。需要明确包含生物效应的侵蚀定律，以探索本质上小规模的生物过程如何影响整个景观的形式，并确定这些过程是否产生了独特的地形。

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