Cooperting with Prof. Thomas Bianchi from University of Florida, Prof. Brendan Keely from University of York, Prof. GUO Zhigang from Fudan University and Prof. ZHAO Meixun from OUC, Prof. YU Zhigang's team made great progress on research of sedimentary organic carbon in the Changjiang Estuary and adjacent shelf. The result was published in Journal of Geophysical Research: Biogeosciences recently.