Dr. Sumei Liu (China), is a professor of Chemical Oceanographer at Ocean University of China, major in marine biogeochemistry. Her research focuses on nutrient cycles, nitrogen isotopes, environmental evolution, silicon dissolution, interactions between nutrients and food webs, atmospheric nutrient deposition. More than 180 papers on marine biogeochemistry have been published in either Chinese or English. She is a Scientific Steering Committee member for Oceanic Research (SCOR)/ International Geosphere-Biosphere Program (IGBP) Integrated Marine Biogeochemistry and Ecosystem Research (IMBER), a member of Advisoty panel for North Pacific Marine Science Organization/Circulation Research in East Asian Marginal Seas (PICES/CREAMS) program, a member of the international scientific council of LabexMER.