Constraining past variations in rates of erosion remains a key challenge in geomorphology, as estimates of erosion rate on different timescales must be bridged. The Late Pleistocene to Holocene represents a key timescale for studying landscape transience, as climatic change, increasing anthropogenic activity, and/or tectonic activity changed the rate of surface processes in many landscapes. Few chronometers are suitable for studying surface processes and landscape transience on these timescales, but, although not yet widely used, in situ ¹⁴C holds much promise due to its appropriate half-life of 5.7 kyr. Furthermore, by pairing in situ ¹⁴C with a stable or longer-lived nuclide, such as ¹⁰Be, ²¹Ne or ²⁶Al, it is possible to compare surface process rates on distinctly different timescales. In this paper, we explore how these paired chronometers can be used to study landscape transience in non-glacial landscapes on Late Pleistocene to Holocene timescales. Indeed, we find that paired measurements of in situ ¹⁴C and a long-lived cosmogenic nuclide (CN) in samples from eroding landscapes enable the detection of changes in erosion rate during the Late Pleistocene to Holocene, if the increase or decrease in erosion rate was larger than a factor of two, and the landscape is eroding at rates that are typical for fluvial landscapes (5–500 mm/kyr). Similarly, detecting changes in catchment-wide denudation rates using paired CN measurements in stream-sediment samples is also possible in catchments with suitable conditions, such as short sediment transport times, minimal erosion from deep-seated mass movement, etc. (von Blanckenburg, 2006).

限制过去侵蚀速率的变化仍然是地貌学的关键挑战，因为必须弥合不同时间尺度的侵蚀速率估算。晚更新世至全新世代表了研究景观瞬变的关键时间尺度，因为气候变化，人类活动增加和/或构造活动改变了许多景观的地表过程速率。很少有天文钟适合在这些时标上研究表面过程和景观瞬变，但是，尽管尚未广泛使用，但原位¹⁴ C由于其5.7千瓦的适当半衰期具有很大的希望。此外，通过将¹⁴ C与稳定的或寿命更长的核素（例如¹⁰ Be，²¹ Ne或^26）配对进行原位配对Al，可以在截然不同的时间尺度上比较表面处理速率。在本文中，我们探索如何使用这些成对的计时器在晚更新世至全新世的时间尺度上研究非冰川景观中的景观瞬变。实际上，我们发现原位^14的配对测量如果侵蚀速率的增加或减少大于两倍，那么从侵蚀景观中提取的碳和长寿命的宇宙成因核素（CN）可以检测出晚更新世到全新世期间侵蚀率的变化。以河流景观的典型速率（5-500 mm / kyr）侵蚀。同样，在条件合适的集水区，例如短的泥沙运输时间，深层物质运动的侵蚀最小等，也可以在河流沉积物样本中使用成对的CN测量来检测集水区全范围剥蚀率的变化。（von Blanckenburg， 2006）。