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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Long-term landform evolution: evidence from talus studies
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Long-term landform evolution: evidence from talus studies

机译：长期地貌演化：距骨研究的证据

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Current concepts of long-term landform change like equilibrium, characteristic forms or the role of climate were developed with the denudational history of landscapes in mind. In this paper some long-term aspects of talus development are discussed as an example of the potential contribution from dominantly depositional environments to the more theoretical concepts of geomorphology. Evolutions during periods of 10~2 to 10~3 years as well as during longer periods (in the order of 10~4 to 10~5 years) are mentioned. Interpretations of geomorphological evolution for the latter time scale and within a regional context may be obtained from the information contained within the shorter time slices studied in detail on individual taluses. Periods fro which the evolution of part of a talus is known in detail, in terms of process types and sequences in relation to climate and other environmental factors, are indicated here as time slices. It is suggested that the combination of such time slices for a given region may result in a more or less complete picture of geomorphological and environmental evolution for relatively long periods. The image obtained is additional to information from other reconstructions of environmental conditions. Two examples of talus research are discussed to explain the intentions of the paper. Concluding statements draw attention to the potentially strong relationships between properties of talus deposits and environmental conditions. This is especially important for information that cannot be obtained from other sources like pollen analysis, for instance about precipitation characteristics. At a more general level of geomorphology, a possible modification of ideas is proposed about the influence of climate on the functioning of certain geomorphological systems. Further consequences of the results are the need to re-think concepts like equilibrium or characteristic form.
机译：当前长期地形变化的概念（如平衡，特征形式或气候作用）是在考虑景观的剥蚀历史的基础上发展起来的。本文讨论距骨发育的一些长期方面，作为一个示例，说明占主导地位的沉积环境对地貌学的更多理论概念的潜在贡献。提到了10〜2至10〜3年以及更长时期（大约10〜4至10〜5年）的演变。可以从更短的时间片中包含的信息中获得关于后一时间尺度和区域背景下的地貌演化的解释，这些时间片是针对个别距量进行详细研究的。根据与气候和其他环境因素有关的过程类型和顺序，详细了解距骨一部分的演化的时间段在此处表示为时间片。建议对于给定区域的此类时间片的组合可能会在相对较长的时间内产生或多或少完整的地貌和环境演变图。获得的图像是来自其他环境条件重建信息的补充。讨论了距骨研究的两个例子以解释本文的意图。结论性声明提请注意距骨沉积物的性质与环境条件之间潜在的密切关系。这对于无法从其他来源（例如花粉分析）获得的信息（例如，降水特征）尤其重要。在更一般的地貌层次上，提出了关于气候对某些地貌系统功能的影响的想法的可能修改。结果的进一步后果是需要重新考虑平衡或特征形式等概念。

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