Detailed knowledge on the past events of erosion and redeposition is necessary to assess the frequency and magnitude of soil degradation and to provide more complete data, among all, to calculate rainfall thresholds and to develop strategies for controlling erosion. Therefore, in this study, we aimed to obtain a more comprehensive and accurate reconstruction of erosion–sedimentation events in a gully system by combining analyses of ¹³⁷Cs and ²¹⁰Pb with dendrochronological dating in the same sediment profiles. We aimed to precisely determine the number and the age of erosion–sedimentation events, which led to the development of study deposits and to determine the type of erosion providing material for deposition in particular events. To this purpose, 136 soil samples and 62 roots and tree stems samples were collected in eight research profiles at the gully bottom. We compared the results obtained with the two methods. Isotope analysis allowed us to estimate more general age of sediments and the type of erosion that provided material for individual layers. Dendrochronology provided a more precise reconstruction of the age of soil degradation events. By combining both techniques, we determined rainfall events responsible for erosion and sedimentation in the studied gully since 1980s and a rainfall threshold of 60 mm day⁻¹ for soil erosion and redeposition in the study area.

中文翻译：

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将137Cs，210Pb和树状年代学相结合，以改善黄土沟渠系统中的侵蚀沉淀事件的重建（波兰南部）

需要详细了解过去的侵蚀和再沉积事件，以评估土壤退化的频率和程度，并提供更完整的数据，以计算降雨阈值并制定控制侵蚀的策略。因此，在这项研究中，我们旨在通过结合¹³⁷ Cs和^210的分析来获得更全面，准确的沟壑系统中冲蚀沉淀事件的重建。具有相同年代学年代的铅在相同的沉积物剖面中。我们旨在精确确定侵蚀沉积事件的数量和年代，这导致了研究沉积的发展，并确定了为特定事件提供沉积物质的侵蚀类型。为此，在沟谷底部的八个研究剖面中收集了136个土壤样品以及62个根和树茎样品。我们比较了两种方法获得的结果。同位素分析使我们能够估计更普遍的沉积物年龄和为单个层提供物质的侵蚀类型。树木年代学可以更精确地重建土壤退化事件的年龄。通过结合两种技术，^-1用于研究区域的水土流失和再沉积。