Highly resolved δ13C and trace element ratios of precisely dated stalagmite from northwestern China: Hydroclimate reconstruction during the last two millennia
Highly resolved δ13C and trace element ratios of precisely dated stalagmite from northwestern China: Hydroclimate reconstruction during the last two millennia
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中国西北部精确定年石笋的高分辨率 δ13C 和微量元素比率：过去两千年的水文气候重建
DOI：
10.1016/j.quascirev.2022.107473
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发表时间：
2022-04
影响因子：
4
通讯作者：
R. Lawrence Edwards
中科院分区：
文献类型：
--
作者：
Wei Jia;Pingzhong Zhang;Leilei Zhang;Xinhu Li;Tao Gao;Haichuan Wang;Haiwei Zhang;Hanying Li;Hai Cheng;R. Lawrence Edwards
与广泛使用的稳定氧同位素（δ18O）相比，中国季风区洞穴洞穴稳定碳同位素（δ13C）的气候响应受到的关注较少，主要是因为其控制因素相对复杂。然而，越来越多的研究表明 δ13C 可以代表水文气候变化。在这里，我们展示了中国西北部万向洞洞穴中过去两千年的高分辨率连续 δ13C 和微量元素比率记录。我们的结果表明，δ13C值在百年尺度的平均值附近振荡，表明上覆植被类型和土壤湿度没有显着变化。去趋势的δ13C和δ18O（δ13Cd和δ18Od）记录之间存在高度一致性，这表明与区域水文循环相关的土壤水分平衡和植被密度是控制数十年-百年尺度上δ13C变化的重要因素。区域水文循环主要受亚洲夏季风（ASM）引起的夏季降水和根据微量元素比（Mg/Ca、Sr/Ca、Ba/Ca）记录推断的稳定的前期方解石降水（PCP）控制。 δ13C和微量元素比率记录与整个考虑时期的δ18O一致，不仅与厄尔尼诺南方涛动的强度和热带辐合带的南北偏移密切相关，而且还响应太阳活动和北半球的温度变化。然而，δ13C和微量元素比率在过去150年中都表现出持续显着下降的趋势。此外，当前暖期（公元1850-2000年）δ18O的变化表明，大气CO2和气溶胶的人为排放而不是ASM导致了区域降水的异常增加和大气δ13C的消耗，从而导致大气CO2和有效水向土壤孔隙和洞穴的渗透增加，但没有任何明显的PCP效应。我们的洞穴化石δ13C的异常变化类似于海洋13C Suess效应，表明石笋δ13C记录在全球变暖的情况下受大气CO2浓度的影响很大。
Compared with the widely used stable oxygen isotope (δ18O), the climate response of the stable carbon isotope (δ13C) of speleothems in monsoonal China has received less attention, mainly because of its relatively complex controlling factors. Nevertheless, an increasing number of studies are suggesting that δ13C can represent hydroclimatic changes. Here, we present highly resolved continuous δ13C and trace element ratio records of a speleothem from Wanxiang Cave, northwestern China, spanning the last two millennia. Our results show that δ13C values oscillated around the mean value on centennial scales, indicating that the overlying vegetation types and soil humidity did not change significantly. High consistency was found between detrended δ13C and δ18O (δ13Cd and δ18Od) records, suggesting that soil moisture balance and vegetation density related to the regional hydrological cycle is an important factor controlling δ13C variations on multidecadal-centennial scales. The regional hydrological cycle is mainly controlled by summer precipitation induced by the Asian summer monsoon (ASM) and the stable prior calcite precipitation (PCP), which was inferred from trace element ratio (Mg/Ca, Sr/Ca, Ba/Ca) records. The δ13C and trace element ratio records, consistent with δ18O throughout the considered periods, are not only closely coupled with the intensity of the El Niño-Southern Oscillation and north-south shift of the Intertropical Convergence Zone but also respond to solar activity and temperature variations in the Northern Hemisphere. However, both δ13C and trace element ratios exhibited a persistent significantly decreasing trend in the last 150 years. Furthermore, the variation of δ18O during the Current Warm Period (AD. 1850–2000) suggests that anthropogenic emissions of atmospheric CO2 and aerosols rather than ASM caused an unusual increase of regional precipitation and depletion of atmospheric δ13C, which induced increased infiltration of atmospheric CO2 and available water into soil pores and caves without any obvious PCP effect. The abnormal changes in our speleothem δ13C are analogous to the oceanic 13C Suess effect, suggesting that stalagmite δ13C record is greatly affected by atmospheric CO2 concentration under global warming.
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影响因子：
4
作者：
H. Stoll;A. Méndez-Vicente;S. González-Lemos;A. Moreno;I. Cacho;Hai Cheng;R. Edwards
通讯作者：
H. Stoll;A. Méndez-Vicente;S. González-Lemos;A. Moreno;I. Cacho;Hai Cheng;R. Edwards
影响因子：
18.3
作者：
Harriet E. Ridley;Y. Asmerom;J. Baldini;S. Breitenbach;Valorie V. Aquino;Keith M. Prufer;B. Culleton;V. Polyak;F. Lechleitner;D. Kennett;Minghua Zhang;N. Marwan;C. Macpherson;L. Baldini;Tingyin Xiao;J. Peterkin;J. Awe;G. Haug
通讯作者：
Harriet E. Ridley;Y. Asmerom;J. Baldini;S. Breitenbach;Valorie V. Aquino;Keith M. Prufer;B. Culleton;V. Polyak;F. Lechleitner;D. Kennett;Minghua Zhang;N. Marwan;C. Macpherson;L. Baldini;Tingyin Xiao;J. Peterkin;J. Awe;G. Haug
近1860年中国北方半湿润地区百年至十年尺度季风降水变化：黄叶洞石笋记录
DOI：
10.1177/0959683610378880
发表时间：
2011-03
期刊：
The Holocene
影响因子：
--
作者：
通讯作者：
--
从石笋三角洲O-18记录看中国西南小冰期气候变化
DOI：
10.1016/j.palaeo.2020.110167
发表时间：
2021
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子：
--
作者：
Li Ting-Yong;Xiao Si-Ya;Shen Chuan-Chou;Zhang Jian;Chen Chao-Jun;Cheng Hai;Spoetl Christoph;Huang Ran;Wang Tao;Li Jun-Yun;Wu Yao;Liu Zi-Qi;Edwards R. Lawrence;Yu Tsai-Luen
通讯作者：
Yu Tsai-Luen
DOI：
10.1007/bf02841598
发表时间：
1998-12
期刊：
Proceedings of the Indian Academy of Sciences - Earth and Planetary Sciences
影响因子：
--
作者：
T. Ku;Hong-chun Li
通讯作者：
T. Ku;Hong-chun Li