In conclusion, the current results suggest that Sanggou Bay plays an important role in the marine carbon cycle.
Sanggou Bay acts as a net importer of DIC with an annual mean uptake of DIC estimated at 1.39 × 105 t.
The DIC flux exchanged across sea-air interface was the largest contribution (59.3%) to the net input of this bay.
Seaweeds (S. japonica and G. lemaneiformis) aswell as phytoplanktonwere heavily involved in the carbon biogeochemical cycle and played a significant role in the fate of inflowing DIC.
This research contributes to our understanding of the influence of the process and mechanisms ofmariculture activities in Sanggou Bay on the marine carbon cycle and our understanding of how this enhances the carbon sink as a part of fisheries theory.