Cambios climáticos en las sierras de Córdoba (Argentina) durante el holoceno. Aportes a las reconstrucciones climáticas a través del análisis de silicofitolitos del sitio arqueológico El Alto 3.
Cambios climáticos en las sierras de Córdoba (Argentina) durante el holoceno. Aportes a las reconstrucciones climáticas a través del análisis de silicofitolitos del sitio arqueológico El Alto 3.
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科尔多瓦山脉（阿根廷）的气候正在经历全新的变化。
DOI：
10.31055/1851.2372.v50.n3.12526
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发表时间：
2015
影响因子：
0.6
通讯作者：
A. Cingolani
中科院分区：
文献类型：
--
作者：
M. Giorgis;María Laura López;Diego E. Rivero;A. Cingolani
：科尔多瓦山脉（阿根廷）的全新世古气候变化。通过埃尔阿尔托考古遗址的硅藻土分析对气候重建的贡献 3。硅藻土分析是古气候重建中越来越多使用的工具。然而，在科尔多瓦，已经使用其他技术进行了气候重建。在这项工作中，我们的目的是通过硅藻土计算国际气候指数，用山区当前的植被和气候分布验证这些指数，并通过硅藻土对科尔多瓦最古老的考古遗址进行首次古气候重建。国际指数与当前植被和气候分布格局一致；尽管凉爽指数比干旱指数更加稳健和敏感。沿着分析的剖面，硅藻土显示出寒冷和潮湿/潮湿的气候，这是山区的特征，但它们在凉爽度和干燥指数方面表现出重要的变化。气候重建与之前的研究一致，因为它显示了全新世初期的干旱高峰，随后是比现在气候更湿润和更温暖的气候，随后出现的更高干旱和温暖的高峰与槟榔科的存在同时发生，最后表现出气温降低和降水增加直到现在
: Holocene paleoclimatic variation in The Cordoba Mountains (Argentina). A contribution to climate reconstruction though silicophytolith analysis from archaeological site El Alto 3. The analysis of silicophytoliths is an increasingly used tool for paleoclimatic reconstructions. However, in Cordoba climatic reconstruction has been performed with other techniques. In this work we aimed to calculate international climatic indices through silicophytoliths, validate these indices with the current vegetation and climate distribution in the Mountains, and present the first paleoclimatic reconstruction through silicophytoliths for the oldest archaeological site in Cordoba. The international indices were consistent with the patterns of the current vegetation and climate distribution; though the coolness index was more robust and sensitive than the aridity index. Along the analyzed profile the silicophytoliths indicated a cold and humid/wet climate, which is characteristic of a mountain site, but they showed important variation in the coolness and aridity index. The climatic reconstruction was consistent with the previous studies, since it showed a peak of aridity at the beginning of the Holocene, followed by a wetter and warmer climate than the current climate, a subsequent peak of higher aridity and warm was coincident with the presence of the Arecaceae family, and finally it showed a temperature reduction and precipitation increase until the present