Fig. 8 | Scientific Reports

Fig. 8

From: Record of polycyclic aromatic hydrocarbons (PAHs) from prehistoric sediments and human activity in the Lubei plain of China

Fig. 8

Comparison of paleofire history with human activities and paleo-climatic records over the past 3000 years BP. (a) Ratio of (C25 + C27 + C29) to (C29 + C31) from the CX site. (b) Low molecular weight PAHs (2-ring PAHs) flux trends from the CX site. (c) Aridity index for eastern China128. (d) Trends in char and soot flux from the CX site. (e) Number of warfare events in eastern China111. (f) HMW PAHs flux trends from the CX site.

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