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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Erosion, deposition, and the persistence of soil organic matter: Mechanistic considerations and problems with terminology
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Erosion, deposition, and the persistence of soil organic matter: Mechanistic considerations and problems with terminology

机译：侵蚀，沉积和土壤有机质的持久性：机械方面的考虑和术语问题

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摘要

The effect of erosional detachment, transport, and deposition of topsoil on the stock of soil organic matter (SOM) and its association with soil minerals has been a focus of a growing number of studies. A particularly lively debate is currently centered on the questions of whether terrestrial sedimentation of previously eroded SOM may constitute a relevant sink for atmospheric carbon dioxide (CO_2), and how 'stable' such carbon (C) might be on multidecadal timescales. In this commentary, we illustrate how redistribution of eroded SOM within a landscape can create situations that are not adequately described by the jargon commonly used to characterize C turnover dynamics. We argue that more quantitative and scientifically rigorous categories are needed to describe soil C turnover and to promote the development of innovative, numerical models of C dynamics in landscapes characterized by significant mass movement.
机译：侵蚀剥落，运移和表层土壤沉积对土壤有机质（SOM）及其与土壤矿物质的关系的影响已成为越来越多研究的焦点。当前，一个特别活跃的辩论集中在以下问题上：先前侵蚀的SOM的陆地沉积是否可能构成大气二氧化碳（CO_2）的相关汇，以及这种碳（C）在多年代的时间尺度上如何“稳定”。在这篇评论中，我们说明了景观中受侵蚀的SOM的重新分布如何造成无法用通常用来描述C营业额动态特征的术语来充分描述的情况。我们认为，需要更多定量和科学严谨的类别来描述土壤碳的转化并促进以大量运动为特征的景观中碳动力学的创新性数值模型的发展。

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