Environmental change and human occupation of southern Ethiopia and northern Kenya during the last 20,000 years
Environmental change and human occupation of southern Ethiopia and northern Kenya during the last 20,000 years
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DOI：
10.1016/j.quascirev.2015.10.026
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发表时间：
2015-12-01
影响因子：
4
通讯作者：
Trauth, Martin H.
中科院分区：
文献类型：
--
作者：
Foerster, Verena;Vogelsang, Ralf;Trauth, Martin H.
由于考古遗址附近缺乏连续的古环境记录，我们对气候驱动的环境变化对史前人类种群影响的理解受到阻碍。在这里，我们比较了一个连续的古气候记录的最后20万年前，目前从Chew Bahir盆地，埃塞俄比亚西南部，在该地区的人类存在的考古记录。这一记录与轨道驱动的日射变化的相关性表明环境对气候强迫的复杂非线性响应，反映在潮湿和干燥条件之间的几个长期和短期过渡中，导致人类有利和不利的生活条件之间的突然变化。相关的考古记录在周围地区的丘巴希尔盆地，大概包括山地和湖边缘的避难所的人口，与我们的气候记录表明，在过去的20万年人类与环境之间的复杂的相互作用。这一结果可能有助于我们了解动态环境如何影响东非早期人类的适应和扩散。(C)2015爱思唯尔有限公司版权所有。
Our understanding of the impact of climate-driven environmental change on prehistoric human populations is hampered by the scarcity of continuous paleoenvironmental records in the vicinity of archaeological sites. Here we compare a continuous paleoclimatic record of the last 20 ka before present from the Chew Bahir basin, southwest Ethiopia, with the available archaeological record of human presence in the region. The correlation of this record with orbitally-driven insolation variations suggests a complex nonlinear response of the environment to climate forcing, reflected in several long-term and short-term transitions between wet and dry conditions, resulting in abrupt changes between favorable and unfavorable living conditions for humans. Correlating the archaeological record in the surrounding region of the Chew Bahir basin, presumably including montane and lake-marginal refugia for human populations, with our climate record suggests a complex interplay between humans and their environment during the last 20 ka. The result may contribute to our understanding of how a dynamic environment may have impacted the adaptation and dispersal of early humans in eastern Africa. (C) 2015 Elsevier Ltd. All rights reserved.