Abstract Coastal dunes have received growing attention in recent years because of the ecosystem services they provide and the high anthropic pressure that they have historically been subjected to and continue to endure. Such pressure especially affects arid dune fields where any changes are more noticeable due to their natural dynamics. The aim of this paper is to analyze the relationship between the degradation of an arid aeolian sedimentary system (El Medano, Tenerife, Spain) due to historical long-term land uses and its subsequent biogeomorphological evolution. The methodology combines historical sources (historical documents, aerial and common photographs and oral sources) and current ones (orthophotos, LiDAR data and field work). In order to analyze the response of the system to these uses, 8 plots were chosen in which 3 different historical land uses had resulted in the total or partial elimination of the vegetation and landforms. Biogeomorphological variables were measured on 461 nebkhas in these plots. The main results show that the historical land uses studied in this paper (aerodrome, aggregate extraction and crop cultivation) modified the entire system, with changes observed in the topography, vegetation cover and sediment availability for transport. Changes in topography and distance from shore were important factors in its recovery capacity. This research contributes to our understanding of the different aeolian sedimentary dynamics that can be detected in the same dune field (especially with nebkha landforms) and is of particular importance for making appropriate environmental management decisions to facilitate the recovery of the ecosystem.

中文翻译：

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在干旱的沿海风成沉积系统中，nebkhas 对历史长期土地利用的生物地貌响应

摘要 近年来，沿海沙丘因其提供的生态系统服务以及它们历来遭受并继续承受的高人类压力而受到越来越多的关注。这种压力尤其会影响干旱的沙丘地带，由于其自​​然动态，任何变化都更加明显。本文的目的是分析干旱风成沉积系统（西班牙特内里费岛埃尔梅达诺）由于历史长期土地利用而退化与其随后的生物地貌演变之间的关系。该方法结合了历史资源（历史文件、航空和普通照片以及口头资源）和当前资源（正射影像、激光雷达数据和实地工作）。为了分析系统对这些用途的反应，选择了 8 个地块，其中 3 种不同的历史土地利用导致了植被和地貌的全部或部分消除。在这些地块中的 461 个 nebkhas 上测量了生物地貌变量。主要结果表明，本文研究的历史土地利用（机场、集料提取和作物种植）改变了整个系统，观察到地形、植被覆盖和可运输沉积物的变化。地形和离岸距离的变化是影响其恢复能力的重要因素。