Several organic and inorganic geochemical analyses have been carried out in the sedimentary record of the Borreguil de los Lavaderos de la Reina (BdlR-03), an alpine peat bog located on the north face of the Sierra Nevada (southern Iberian Peninsula). This study permitted a high-resolution reconstruction of paleoenvironmental evolution for the last ~2700 cal yr BP in the highest mountain range of southern Iberian Peninsula. An overall trend towards a climatic aridification and a reduction of aquatic environments is observed in this record. Insolation and long-term positive North Atlantic Oscillation trends were the most important factors controlling this aridification, forcing regional and local environmental changes. Four phases are differentiated within the paleoenvironmental evolution of BdlR-03: (1) a pre-bog environment from 2700 to 2600 cal yr BP with important siliciclastic sedimentation and low organic content; (2) a bog environment with important presence of terrestrial vascular plant, water availability and maximum humid conditions between ~2600 and ~1870 cal yr BP, coinciding with the Iberian-Roman Humid Period; (3) a subsequent drier bog environment, between ~1870 and ~300 cal yr BP during the Dark Ages, the Medieval Climate Anomaly and the first stages of the Little Ice Age, characterized by lower productivity that affected the development of terrestrial vascular plants and aquatic environments; and (4) a wetland environment with an increase of aquatic algae, development of ephemeral pools and unstable climate conditions between ~300 cal yr BP and the present, coinciding with the final stages of the Little Ice Age and the Modern Global Warming. This recent environmental pattern, which is opposite to the general aridification trend in the western Mediterranean, is likely explained by the gradual melting of the perennial ice and/or snow packs at higher elevations in the last centuries. Aeolian inputs would have continuously contributed nutrients to these nutrient-impoverished alpine environments. High dust inputs are especially noticed during the last ~200 years, which can be explained by human-induced enhanced aridification and the development of the commercial agriculture in some North African regions. In addition, the environmental signal in the last century seems to be significantly affected by human activities.

在位于内华达山脉（伊比利亚南部半岛）北面的高山泥炭沼泽的Borreguil de los Lavaderos de la Reina（BdlR-03）的沉积记录中已进行了一些有机和无机地球化学分析。这项研究允许在伊比利亚半岛南部最高山脉的最后一个约2700 yr BP高分辨率重建古环境演化。在该记录中，观察到了朝着气候干旱化和水生环境减少的总体趋势。日照和北大西洋涛动的长期长期趋势是控制这种干旱化，迫使区域和地方环境变化的最重要因素。BdlR-03的古环境演化分为四个阶段：（1）2700至2600 cal yr BP的沼泽前环境，具有重要的硅质碎屑沉积和低有机物含量；（2）沼泽环境中存在重要的陆生维管植物，水的可利用性以及在BP约2600年至1870年之间的最大湿度条件，与伊比利亚-罗马湿润时期相吻合；（3）随后的较干燥的沼泽环境，在黑暗时代，中世纪气候异常和小冰期的第一阶段，大约在1870年至300 cal BP之间，其特征是生产力降低，影响了陆地维管植物的发育和水生环境；（4）湿地环境，在大约300 cal BP到现在之间，水生藻类增加，短暂的池发展以及不稳定的气候条件，与小冰河时代和现代全球变暖的最后阶段相吻合。这种最近的环境模式与西地中海的总体干旱化趋势相反，这可能是由于过去几个世纪来，高海拔地区多年生冰和/或积雪的逐渐融化造成的。风沙输入将持续为这些营养不良的高山环境贡献营养。在过去约200年中，尤其是灰尘输入量很高，这可以用人为引起的干旱化和北非某些地区商业农业的发展来解释。另外，上个世纪的环境信号似乎受到人类活动的显着影响。这与地中海西部的总体干旱化趋势相反，这可能是由于过去几个世纪来，高海拔地区多年生冰和/或积雪的逐渐融化造成的。风沙输入将不断为这些营养不良的高山环境贡献营养。在过去约200年中，尤其是灰尘输入量很高，这可以用人为引起的干旱化和北非一些地区商业农业的发展来解释。此外，上个世纪的环境信号似乎受到人类活动的极大影响。这与地中海西部的总体干旱化趋势相反，这可能是由于过去几个世纪来，高海拔地区多年生冰和/或积雪的逐渐融化造成的。风沙输入将持续为这些营养不良的高山环境贡献营养。在过去约200年中，尤其是灰尘输入量很高，这可以用人为引起的干旱化和北非某些地区商业农业的发展来解释。此外，上个世纪的环境信号似乎受到人类活动的极大影响。风沙输入将持续为这些营养不良的高山环境贡献营养。在过去约200年中，尤其是灰尘输入量很高，这可以用人为引起的干旱化和北非某些地区商业农业的发展来解释。此外，上个世纪的环境信号似乎受到人类活动的极大影响。风沙输入将持续为这些营养不良的高山环境贡献营养。在过去约200年中，尤其是灰尘输入量很高，这可以用人为引起的干旱化和北非某些地区商业农业的发展来解释。此外，上个世纪的环境信号似乎受到人类活动的极大影响。