Pollen could hold clues to mysteries of early human migration
More tree pollen could have led to more Pleistocene-era people living in Eurasia.
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More tree pollen could have led to more Pleistocene-era people living in Eurasia.
Reconstructing environmental changes for the last glacial-interglacial cycles in central China plays a key role in deciphering vegetation history and the evolution of the East Asia summer monsoon (EASM). Previous studies have documented climate changes since the Last Glacial Maximum (LGM), but climate dynamics associated with orbital and millennial time-scales is yet to be fully described and understood. In this study, pollen, charcoal, geochemistry and AMS14C dating were performed on a 290 cm long sediment core obtained from the Erxianyan Wetland in central China to reconstruct the environmen...
ArcGIS software was used to analyze the spatial distribution of Mid Holocene (i.e., 6.7-3.1 ka BP) human settlements and sites in the Dalian area. Their evolution was studied in depth alongside the Mid Holocene environmental background known to have existed. The results showed that: ① The number of ancient settlements in the Dalian area increased during this period. Most sites during the three periods studied were to be found 0 to 50 m above sea level (asl), with a significant increase in the number of sites located > 50 m asl during the Bronze Age. In terms of gradient of slope, all sett...