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2016 ; 6
(ä): 27723
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The abrupt climate change near 4,400 yr BP on the cultural transition in Yuchisi,
China and its global linkage
#MMPMID27283832
Wang J
; Sun L
; Chen L
; Xu L
; Wang Y
; Wang X
Sci Rep
2016[Jun]; 6
(ä): 27723
PMID27283832
show ga
Extreme climatic events have profound impacts on human society. Here we present
the results of a study of organic biomarkers within a sedimentary section at the
archaeological site of Yuchisi, eastern China, in order to reconstruct climatic
variability during the Dawenkou (5,050-4,400 yr BP) and Longshan (4,400-4,000 yr
BP) cultures. At ~4,400 yr BP, within the cultural transition horizon, abrupt
changes in biomarkers, such as the fatty acid ratio C18:2/C18:0,
2C31/(C27?+?C29), n-C18-ol and n-C30-ol, indicate the occurrence of local climate
changes over the course of a few decades. These changes occurred during the
transition from the Holocene warm period to a subsequent cold period which lasted
for the following 600 years. This climatic shift has been recorded at numerous
sites worldwide, and it is likely to have been the main cause of the widespread
collapse of many isolated cultures at that time. The palaeoclimatic and
archaeological data from the Yuchisi sediments may provide new insights into the
relationship between climate change and prehistoric cultural transitions.