Late holocene environments in Las Tablas de Daimiel (south central Iberian peninsula, Spain)
Late holocene environments in Las Tablas de Daimiel (south central Iberian peninsula, Spain)
复制标题
Las Tablas de Daimiel（西班牙伊比利亚半岛中南部）的全新世晚期环境
DOI：
10.1007/s00334-006-0047-9
复制
发表时间：
2007
影响因子：
2.5
通讯作者：
C. Dabrio
中科院分区：
文献类型：
--
作者：
M. J. Gil García;M. R. Ruiz Zapata;J. I. Santisteban;R. Mediavilla;E. López;C. Dabrio
使用高分辨率的花粉记录与地球化学数据相结合，沉积物主要由层轮藻交替层的植物遗骸加上一些碎屑床允许重建的环境演变的过去3000年在地中海域的内陆湿地，从而引入了一个新的气候数据集晚全新世。水文波动，反映在出现和水生植被和无机和有机C和N的变化之间的关系，可以与干旱或潮湿的阶段，而乔木类群（栎属和松属）和蒿属之间的关系被用作温度指标。已经确定了五个气候时期：亚大西洋寒冷期（<公元前150年），寒冷和干旱;罗马温暖时期（公元前150年-公元150年）270），warmer and wetter; the Dark Ages（a.d. 270-a.d. 950），更冷，更干燥;中世纪温暖时期（公元950-公元950）。1400），温暖和潮湿;和小冰河时代（>公元1400）由冷却和干燥的趋势表明。尽管缺乏任何人类活动的直接证据，但在收复失地（中世纪）期间，有一些与森林砍伐有关的事件掩盖了真实的气候信号。
The use of a high resolution pollen record in combination with geochemical data from sediments composed mainly of layers of charophytes alternating with layers of vegetal remains plus some detrital beds permits the reconstruction of the environmental evolution of the last 3000 years in an inland wetland of the Mediterranean domain, thus introducing a new climatic dataset for the Late Holocene. Hydrological fluctuations, reflected in the relationship between emerged and aquatic vegetation and inorganic and organic C and N changes, can be related to aridity or humid phases, while relations among arboreal taxa (Quercus and Pinus) and Artemisia are used as temperature indicators. Five climatic periods have been identified: a Subatlantic Cold Period (<150 b.c.), cold and arid; the Roman Warm Period (150 b.c.–a.d. 270), warmer and wetter; the Dark Ages (a.d. 270–a.d. 950), colder and drier; the Medieval Warm Period (a.d. 950–a.d. 1400), warmer and wetter; and the Little Ice Age (>a.d. 1400) indicated by a cooling and drying trend. Despite the lack of any direct evidence of human action, there are some episodes related to deforestation during the Reconquista (Middle Ages) that mask the real climatic signal.