Studies on quaternary sporo-pollen assemblage and paleoclimate based on Bohai Sea core Bc−1

Meng Guanglan; Wang Shaoqing

doi:10.1007/BF02846270

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Studies on quaternary sporo-pollen assemblage and paleoclimate based on Bohai Sea core Bc−1

Updated：2023-05-16

- Studies on quaternary sporo-pollen assemblage and paleoclimate based on Bohai Sea core Bc−1
- Journal of Oceanology and Limnology Vol. 7, Issue 4, Pages: 368-381(1989)
- Affiliations：
  
  Institute of Oceanology
- Author bio：
- Funds：
- DOI：10.1007/BF02846270
  CLC：
- Published：1989
- Accepted：
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Guanglan, M., Shaoqing, W. Studies on quaternary sporo-pollen assemblage and paleoclimate based on Bohai Sea core Bc−1, ., Chin. J. Ocean. Limnol. 7, 368–381 (1989). https://doi.org/10.1007/BF02846270
DOI：

Guanglan, M., Shaoqing, W. Studies on quaternary sporo-pollen assemblage and paleoclimate based on Bohai Sea core Bc−1, ., Chin. J. Ocean. Limnol. 7, 368–381 (1989). https://doi.org/10.1007/BF02846270 DOI：

摘要

Abstract

Analysis of 13 spore-pollen assemblage zones reflecting environmental changes since the later middle Pleistocene showed the seccession of paleovegetation and the paleogeographic changes in the Bohai Basin and circumjacent area. Paleoclimatic variations here can obviously be divided into 5 cold and 5 warm periods: 2 cold and 1 warm periods in 200

000–100

000 a B.P.(late middle Pleistocene) 3 cold and 3 warm periods in 100

000–12

000 a B.P.(late Pleistocene)

and 1 warm period since 12

000 a B.P. Late Pleistocene climate tended to become colder and colder. The coldest period was in the later stage of late Pleistocene

when the study area was a periglacial zone. The mean annual temperature then was about 10°C lower than it is now. In the middle stage of late Pleistocene

climate became warm; the mean annual temperature then was about 3–4°C higher than it is now. By applying principles of climatic stratigraphy

the authors deduced through sporo-pollen analysis

that the boundary between middle and late Pleistocene should be at 178–181 m

and that between Pleistocene and Holocene should be at 12.8 m. The results of climatic stratigraphy are consistent with those of magnetic stratigraphy.

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references

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