Changes in the radiocarbon reservoir age in Lake Xingyun, Southwestern China during the Holocene.
Changes in the radiocarbon reservoir age in Lake Xingyun, Southwestern China during the Holocene.
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西南星云湖全新世放射性碳储层年龄变化
DOI：
10.1371/journal.pone.0121532
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Yu J
中科院分区：
文献类型：
--
作者：
Zhou A;He Y;Wu D;Zhang X;Zhang C;Liu Z;Yu J
年代学是古气候学的重要组成部分。放射性碳测年在确定早于约50ka BP的地质样品的年龄方面起着核心作用。然而，它的应用有许多局限性，包括放射性碳储集层效应，这可能会导致许多湖泊的年代学错误。在这里，我们展示了中国西南部星云湖放射性碳库年龄的时间变化，以前的研究中已经报道了基于大量有机质的放射性碳库年龄。我们根据陆地植物宏观化石确定的新的放射性碳年龄表明，在过去的8500年代BP期间，放射性碳储集层的年龄从960年变化到2200年。水库效应的这些变化与湖泊系统的水文变化导致的星云湖早期有机碳或14C枯竭硬水的输入有关。放射性碳库年龄可能反过来又是湖泊生态系统和沉积环境中碳源的良好指示。
Chronology is a necessary component of paleoclimatology. Radiocarbon dating plays a central role in determining the ages of geological samples younger than ca. 50 ka BP. However, there are many limitations for its application, including radiocarbon reservoir effects, which may cause incorrect chronology in many lakes. Here we demonstrate temporal changes in the radiocarbon reservoir age of Lake Xingyun, Southwestern China, where radiocarbon ages based on bulk organic matter have been reported in previous studies. Our new radiocarbon ages, determined from terrestrial plant macrofossils suggest that the radiocarbon reservoir age changed from 960 to 2200 years during the last 8500 cal a BP years. These changes to the reservoir effect were associated with inputs from either pre-aged organic carbon or 14C-depleted hard water in Lake Xingyun caused by hydrological change in the lake system. The radiocarbon reservoir age may in return be a good indicator for the carbon source in lake ecosystems and depositional environment.
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影响因子：
3
作者：
CRANWELL, PA;EGLINTON, G;ROBINSON, N
通讯作者：
ROBINSON, N
影响因子：
1
作者：
Barnekow, L;Possnert, G;Sandgren, P
通讯作者：
Sandgren, P
影响因子：
2.9
作者：
GODWIN, H
通讯作者：
GODWIN, H
DOI：
10.1073/pnas.64.2.436
发表时间：
1969-01-01
影响因子：
11.1
作者：
HAN, J;CALVIN, M
通讯作者：
CALVIN, M
影响因子：
2.4
作者：
Ascough, P. L.;Cook, G. T.;Dugmore, A. J.
通讯作者：
Dugmore, A. J.