Chinese Science Bulletin

, Volume 47, Issue 15, pp 1289–1291 | Cite as

The summer monsoon evolution recorded by carbon isotope of organic matter from the Yuanbao loess section during the Last Interglaciation



Based on the carbon isotope record of organic matter from the Yuanbao loess section, northwestern China, five enhanced summer monsoon events were observed at this area during the Last Interglaciation. Such events were also recorded by the paleosol layers, pollen assemblage and magnetic susceptibility. It is suggested that the enhanced summer monsoon leads to the shift of vegetation type, which results in the change of δ13C value of organic matter in the paleosol layer. It appears that the δ13C of organic matter is a good indicator for the summer monsoon variation. Among these five events, the first, second and the fifth reached their maximum smoothly, but the other two had experienced a less cold stage before reaching their peaks, which suggests that the mechanisms of such events may be different.


Chinese Loess Plateau paleosol carbon isotope of organic matter summer monsoon 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Liu, T. S. et al. (eds.), Loess and the Environment (in Chinese). Beijing: China Ocean Press, 1985, 44.Google Scholar
  2. 2.
    Porter, S. C., An, Z. S., Correlation between climates events in the North Atlantic and China during the Last Glaciation, Nature, 1995, 375(6529): 305.CrossRefGoogle Scholar
  3. 3.
    Grip members, Climate instability during the last interglacial period recorded in the GRIP ice core, Nature, 1993, 364(6434): 203.CrossRefGoogle Scholar
  4. 4.
    Lorius, C., Jouzel, J., Ritz, C. et al., A 150000a climatic record from Antarctic, Nature, 1985, 316: 591.CrossRefGoogle Scholar
  5. 5.
    Yao, T. D., Tompson, L. G., Shi, Y. F. et al., Climate variation since the Last Interglaciation recorded in the Guliya ice core, Since in China, Series D, 1997, 40(6): 662.CrossRefGoogle Scholar
  6. 6.
    An, Z. S., Kukla, G., Porter, S. C. et al., Magnetic susceptibility evidence of monsoon variation on the Loess Plateau of Central China during the last 130000 years, Quaternary Research, 1991, 36(1): 29.CrossRefGoogle Scholar
  7. 7.
    An, Z. S., Kukla, G., Porter, S. C. et al., Late Quaternary dust flow on the Chinese Plateau, Catena, 1991, 18: 125.CrossRefGoogle Scholar
  8. 8.
    Lin, B. H., Liu, R. M., The stable isotopic evidence of the monsoon variation on Chinese Loess Plateau since the last 800 ka years, Chinese Science Bulletin, 1992, 37(2): 178.Google Scholar
  9. 9.
    Wang, H., Follmer, L. R., Proxy of monsoon seasonality in carbon isotopes from paleosols of the southern Chinese Loess Plateau, Geology, 1998, 26(11): 987.CrossRefGoogle Scholar
  10. 10.
    Li, J. J., The patterns of environmental changes since late Pleistocene in Northwest China, Quaternary Sciences (in Chinese), 1990, 3: 197.Google Scholar
  11. 11.
    Chen, F. H., Feng, Z. D., Zhang, J. W., Loess particle size data indicative of stable winter monsoons during the last interglacial in the western part of the Chinese Loess Plateau, Catena, 2000, 39: 233.CrossRefGoogle Scholar
  12. 12.
    Fang, X. M., Li, J. J., Zhang, J. J. et al., The Cenozoic stratum absolute ages of measurement and delimits in Linxia Basin, Gansu, Chinese Science Bulletin (in Chinese), 1997, 42(14): 1457.Google Scholar
  13. 13.
    Cao, J. X., Zhang, Y. T., Wang, J. M. et al., Temporal and spatial characteristics of loess magnetic susceptibility in the Yuanbao loess section and the climatic change over the past 150000 years, Journal of Lanzhou University (Natural Sciences) (in Chinese), 1997, 33(1): 124.Google Scholar
  14. 14.
    Deines, P., The isotopic composition of reduced organic carbon (eds. Fritz, P., Fontes, J. Ch.), Handbook of Environmental Isotope Geochemistry I, The terrestral environment, Armsterdam: E1sevier, 1980, 329.Google Scholar
  15. 15.
    Ma, Y. Z., Cao, J. X., Li, J. J., The plant community development and climate change during the last 150000 years in Yuanbao loess section, Gansu, Study of Evolution, Environment Change and Biologic System in Tibetan Plateau, Beijing: Science Press, 1994, 103.Google Scholar
  16. 16.
    Ke, M. H., Sun, J. Z., Zh, J. B., The paleoenvironment evolution since the Last Interglaciation at Fuxian, Journal of Xi’an Geology Institute (in Chinese), 1993, 15(4): 172.Google Scholar
  17. 17.
    Sun, J. Z., Ke, M. H., Wei, M. J. et al, Vegetation, climate and environment of the Loess Plateau in China during the late Pleistocene, Journal of Xi’an Engineering University (in Chinese), 1998, 20(2): 39.Google Scholar
  18. 18.
    Prell, W. L., Kuzbach, J. E., Monsoon variability over the past 150000 years, J. Geophys. Res., 1987, 92(D7): 8411.CrossRefGoogle Scholar

Copyright information

© Science in China Press 2002

Authors and Affiliations

  1. 1.Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of SciencesLanzhouChina

Personalised recommendations