Abstract At mid-latitudes, the transition from the Pleistocene to the Holocene was characterised by distinct and partially abrupt climatic changes. Also during the Holocene, climatic perturbations, with sometimes cold-dry conditions, have occurred. How land surfaces and soil development processes in high-mountains respond to these climatic oscillations is so far only poorly known. We traced the responses of surfaces in the alpine settings of the Wind River Range (Wyoming, US) by using a large mire as natural archive. This enabled us to reconstruct environmental conditions and ecosystem changes during the Holocene in this montane area. Although adjacent moraine deposits display 10Be exposure ages from the Last Glacial Maximum up to MIS16 or even older, the accessible sediment deposits covered only the Holocene (via radiocarbon dating). By applying a geoforensic approach and deriving sedimentation rates, major climatic signals were detected. A higher deposition (and consequently erosion) rate and thus a higher rate of geomorphic activity was measured for the known cold periods 9.4–10.2 ka BP, 4.2 ka BP and 2.5 ka BP. During the LIA, especially rapid aggradation of organic matter organic matter took place here. Rates of chemical weathering and soil formation seem to have been relatively low until about 5–6 ka BP but have since increased during the Late Holocene. This would fit previous observations of increasing moisture conditions after the mid-Holocene aridity period. In contrast to several other studies, no clear signs of major disturbances (erosion, weathering) during the 8.2 ka event could be observed. Together with the low levels of chemical weathering found here, we do not see any evidence that the climate was more humid during this period. Compared to previous findings, more humid conditions seemed to have returned earlier, i.e. about 5 kyr BP. In general, this landscape displayed a patchy pattern of reaction to environmental changes, as all events were not recorded in each mire profile.

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来自怀俄明州风河山脉狄金森公园泥沼的景观演变、LGM 后地表剥蚀和土壤风化过程（美国）

摘要 在中纬度地区，从更新世到全新世的过渡具有明显且部分突变的气候变化特征。同样在全新世期间，有时会出现寒冷干燥的气候扰动。迄今为止，人们对高山地表和土壤发育过程如何对这些气候波动做出反应知之甚少。我们使用大泥沼作为自然档案，追踪了风河山脉（美国怀俄明州）高山环境中的表面响应。这使我们能够重建该山地地区全新世期间的环境条件和生态系统变化。尽管相邻的冰碛沉积物显示出从末次盛冰期到 MIS16 或更早的 10Be 暴露年龄，但可接近的沉积物沉积物仅覆盖全新世（通过放射性碳测年）。通过应用地理取证方法和推导沉积速率，检测到主要气候信号。对于已知的寒冷时期 9.4-10.2 ka BP、4.2 ka BP 和 2.5 ka BP，测量到更高的沉积（以及因此的侵蚀）率和更高的地貌活动率。在LIA期间，这里发生了特别是有机质有机质的快速聚集。直到大约 5-6 ka BP 之前，化学风化和土壤形成的速率似乎相对较低，但在全新世晚期期间有所增加。这将符合之前对全新世中期干旱期之后湿度条件增加的观察结果。与其他几项研究相比，在 8.2 ka 事件期间没有观察到重大扰动（侵蚀、风化）的明显迹象。再加上这里发现的化学风化程度很低，我们没有看到任何证据表明在此期间气候更加潮湿。与之前的发现相比，更潮湿的条件似乎更早恢复，即大约 5 kyr BP。总的来说，这个景观对环境变化的反应模式不一，因为所有事件都没有记录在每个泥潭剖面中。