Climatic changes since the last deglaciation inferred from a lacustrine sedimentary sequence in the eastern Nanling Mountains, south China
Climatic changes since the last deglaciation inferred from a lacustrine sedimentary sequence in the eastern Nanling Mountains, south China
复制标题
DOI：
10.1002/jqs.1384
复制
发表时间：
2010-09
影响因子：
2.3
通讯作者：
Wei Zhong;Ji-bin Xue;Yanming Zheng;Jun Ouyang;Qiaohong Ma;Ying Cai;Xiaohong Tang
中科院分区：
文献类型：
--
作者：
Wei Zhong;Ji-bin Xue;Yanming Zheng;Jun Ouyang;Qiaohong Ma;Ying Cai;Xiaohong Tang
选取南岭东部大湖沼泽的两个沉积柱样，对该沼泽的古气候变化进行了研究。两个岩芯的多代理记录（包括岩性变化、有机碳同位素比、干容重、有机质含量、磁化率、腐殖化度、中值粒度和地球化学代理）表明，在最后一次冰消期，三个干燥阶段对应于最古老、古老和新仙女木冷却事件，而插入的两个湿润阶段与Bølling和Allerød变暖事件同步。全新世最佳期发生在全新世早期和中期，是东亚夏季风加强的结果。10-6 cal. ka BP）。在全新世中期和晚期（约。6-3 ka BP），普遍的干燥气候表明东亚夏季风减弱。研究区全新世气候变化的总体趋势与25° N夏季太阳辐射一致，表明轨道辐射对研究区全新世气候变化起着重要作用。版权所有© 2010约翰威利父子有限公司.
Two sediment cores recovered from Dahu Swamp, which is located in eastern Nanling Mountains in south China, were selected for investigation of palaeoclimatic changes. Multi‐proxy records of the two cores including lithological variation, organic carbon isotope ratio, dry bulk density, organic matter content, magnetic susceptibility, humification degree, median grain size and geochemical proxies reveal that during the last deglaciation three drier phases correspond to the Oldest, Older and Younger Dryas cooling events, and the intercalated two wetter phases synchronise with the Bølling and Allerød warming events. The Holocene Optimum, which was resulted from a strengthening of the East Asian (EA) summer monsoon, occurred in the early and mid Holocene (ca. 10–6 cal. ka BP). In the mid and late Holocene (ca. 6–3 cal. ka BP), a prevailing dry climate suggested a weakening of the EA summer monsoon. The general trend of Holocene climatic changes in this study agrees with the 25° N summer solar insolation, suggesting that orbitally induced insolation may have played an important role in the Holocene climate in the study region. Copyright © 2010 John Wiley & Sons, Ltd.