Predicted PAH concentrations in surface water and sediment by 2050. (IMAGE)

Tsinghua University Press

Predicted PAH concentrations in surface water and sediment by 2050.

Caption

The figure shows PAH transport and projected concentrations in the Yangtze, Huanghe, and St. Lawrence watersheds through 2050. Sediments act as a sink for most PAHs in the Yangtze and Huanghe watersheds but as a net source in the St. Lawrence watershed. Under climate-change scenarios, surface-water PAH concentrations are projected to increase or rebound in the two Chinese watersheds, whereas changes in the St. Lawrence watershed remain comparatively small because of higher PAH degradation rates.

Credit

Carbonsphere, Tsinghua University Press

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