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南京葫芦洞石笋δ^(13)C对冰期气候的复杂响应与诊断 被引量:25

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摘要 文中重建了南京葫芦洞内距今75~10ka期间7支石笋δ13C的时间变化序列,δ13C曲线在重叠时段均具有一致性波动形式.在最后一个冰期/间冰期旋回,δ13C值变化幅度达6‰,反映了C3/C4植被类型变化对δ13C的主控作用.然而,在末次冰期格陵兰冰心记录的DO暖事件时(千年尺度),δ13C与指示降水变化的δ18O呈反相关,主要反映了快速渗水条件下洞穴岩溶水对土壤CO2溶解量的降低.据同期生长石笋δ13C和δ18O对比分析,石笋碳同位素动力分馏程度与生长速率有关.进一步研究发现,本区末次冰消期植被类型变化滞后于降水变化约700年.
出处 《中国科学(D辑)》 CSCD 北大核心 2005年第11期1047-1052,共6页 Science in China(Series D)
基金 国家杰出青年基金项目资助(批准号:40225007)
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  • 1Winograd I J, Landwehr J M, Ludwig K R, et al. Duration and structure of the past four interglaciations. Quat Res 1997, 48: 141~154.
  • 2Wang Y J, Cheng H, Edwards R L, et al. A high-resolution absolute-dated Late Pleistocene monsoon record from Hulu Cave, China. Science, 2001, 294: 2345~2348.
  • 3Tan Ming, Tungsheng Liu, Juzhi Hou, et al. Cyclic rapid warming on centennial-scale revealed by a 2650-year stalagmite record of warm season temperature. Geophysical Research Letters, 2003, 30(12): 1617~1620.
  • 4Dorale J A, Gonzalez L A, Reagan M K, et al. A high-resolution record of Holocene climate change in speleothem calcite from Coldwater cave, Northeast Iowa. Science, 1992, 258: 1626~1630.
  • 5Genty D, Blamart D, Ouahdi R, et al. Precise dating of Dansgaard-Oeschger climate oscillations in western Europe from stalagmite data. Nature, 2003, 421: 833~837.
  • 6Baker A, Ito E, Smart P L, et al. Elevated 13-C in speleothem and implications for palaeovegetation studies. Chem Geol, 1997, 136: 263~270.
  • 7Bar-Matthews M, Avner Ayalon, Aaron Kaufman, et al. Wasserburg. The Eastern Mediterranean paleoclimate as a reflection of regional events: Soreq cave, Israel. Earth and Planetary Science Letters, 1999, 166: 85~95.
  • 8Bar-Matthews M, Ayalon A, Kaufman A. Timing and hydrological conditions of Sapropel events in the Eastern Mediterranean, as evident from speleothems, Soreq Cave, Israel. Chem Geol 2000, 169: 145~156.
  • 9Genty D, Baker A, Massault M, et al. Dead carbon in stalagmites: Carbonate bedrock paleodissolution vs. ageing of soil organic matter. Implications for 13C variations in speleothems. Geochimica et Cosmochimica Acta, 2001, 65(20): 3443~3457.
  • 10Hendy C H. The isotopic geochemistry of speleothems. I. The calculation of the effects of different modes of formation on the isotopic composition of speleothems and their applicability as paleoclimatic indicators. Geochim Cosmochim Acta, 1971, 35: 801~824.

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