In recent decades the dynamics of global change in developed countries has led to significant alterations in the hydrological and sediment dynamics of terraced land. Agricultural terraces were built to control overland flow and prevent erosion, acting as buffers and barriers throughout the sediment cascading system. Their abandonment and degradation increase the sensitivity of the catchment, promoting the collapse of dry-stone walls and the reworking of stored sediment. In this study, a geomorphometric Index of Connectivity (IC) –derived from high-resolution LiDAR data (0.9 pt m-2, RMSE Q8). This spatial matching was related to feedback dynamics between structural and functional connectivity, in which the failure of walls increases the concentration of runoff, which in turn accelerates the hydraulic processes causing their collapse. Identifying the most connected pathways within the most vulnerable structures in an integrated analysis could be a cost-effective strategy for establishing priority areas for the management of terraced lands.

中文翻译：

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梯田沉积物连通性的空间模式：集水区敏感性的人为控制

近几十年来，发达国家的全球变化动态导致梯田的水文和沉积动态发生了重大变化。建造农业梯田是为了控制地表水流和防止侵蚀，在整个沉积物级联系统中充当缓冲区和屏障。它们的废弃和退化增加了集水区的敏感性，促进了干石墙的倒塌和储存沉积物的再加工。在本研究中，连通性 (IC) 的地貌测量指数源自高分辨率 LiDAR 数据（0.9 pt m-2，RMSE Q8）。这种空间匹配与结构和功能连接之间的反馈动态有关，其中墙体的破坏增加了径流的浓度，从而加速了导致它们倒塌的水力过程。