The global land-water-air interface carbon migration and carbon budget (IMAGE)

Science China Press

The global land-water-air interface carbon migration and carbon budget

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Four components are involved in land-water-air interface C cycle processes (DIC, DOC, POC, and CO2) at three different interfaces (the water-land interface, the water-air interface, and the sediment-water interface). This process mainly includes the following sources: river and groundwater DOC, DIC, and POC inputs; river and groundwater DOC, DIC, and POC outputs; atmospheric DIC, DOC, and POC deposition inputs; and the absorption and emission of CO2. Photosynthesis, mineralization, and flocculation are the main factors that effectuate the mutual conversion of DIC, DOC, and POC. POC is deposited in sediment, and carbon is released from sediment. Carbon flux is equal to the carbon concentration multiplied by the carbon released.

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