Palynological records and paleoclimate of Core SA09-040 in the South of South China Sea

Abstract

Abstract: According to the high resolution pollen record in the Core SA09-040 which was taken in the low latitude of the South China Sea,four pollen zones have been divided in ascending order. Based on the pollen composition change, the vegetation evolution and climate change since 22. 25 Ka B P were reconstructed. The research result shows that the pollen mainly came from the Borneo and nearby islands. In Pollen zone 1(22. 25~16.6 Ka B P),the low mountain rainforest were luxuriant, the climate was warm to hot. Judged from the dating result, the age was the late stage of the Last glacial period. Pollen zone 2(16. 6~10. 82 Ka B P,the Last deglaciation) shows that the vegetation were mainly tropical low mountain rainforest and lowland rainforest. There were many conifer pines. The temperature was lower than that of now. Pollen zone 3(the early stage of Holocene, 10. 82~6. 43 Ka B P)shows that the vegetation were mainly tropical low mountain rainforest and lowland rainforest. The conifer pines were fewer than that in Pollen zone 2,the temperature was higher than before, the sea-level rose. Pollen zone 4(the middle or late Holocene, 6. 43Ka B P to now) shows that the middle stage of Holocene was hot and wet, and at the late stage of the Holocene, the vegetation in Borneo was similar to the environment of now. The climate was hot and wet.

Key words: South China Sea, pollen, paleoclimate

CLC Number:

Q914.81

ZHANG Yu-lan, PENG Xue-chao, JA Li, DAI Lu. Palynological records and paleoclimate of Core SA09-040 in the South of South China Sea[J]. Journal of Marine Sciences, 2012, 30(3): 101-106.

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