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Chemical Aspects of GLOBEC-China Programs and Potential to GLOBEC-IMBER Study in China

Chemical Aspects of GLOBEC-China Programs and Potential to GLOBEC-IMBER Study in China. Jing Zhang 1. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062 2. College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266003.

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Chemical Aspects of GLOBEC-China Programs and Potential to GLOBEC-IMBER Study in China

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  1. Chemical Aspects of GLOBEC-China Programs and Potential to GLOBEC-IMBER Study in China Jing Zhang 1. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062 2. College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266003

  2. 116 118 120 122 124 126 128 130 131 40 38 36 Biogeochemical Cycle 34 32 30 28 26 24 22 Atmospheric Depositions Riverine Input Shelf-Edge Exchange Sediment – Water Interface Kuroshio Question 3: Nutrient Dynamics

  3. Scientific Questions: 1. How the transfer of chemical materials across the boundary affects the ecosystem of the East China Sea and Yellow Sea - on cycles of chemical elements? - on nutrient budgets? 2. To what extent the biogeochemical processes affects the carbon cycle and fisheries - on the food web structure? - on transform of nutrient limitation? - on comparison of new and recycled production?

  4. Measurements and Simulation • Nutrients (NO3-, NH4+, NO2-, PO43-, and SiO32-) and DOC/N • Trace species [Al, As (III+V), CH4, and N2O] • POC/N, C-13, N-15, and particulate metals • Radio isotopes (e.g. 210Pb, 7Be, 234Th, 226Ra and 228Ra) • Bio-markers (e.g. Alkanes, PAHs, AA and FAs)

  5. Phosphorus in Food Web Zooplankton Atomospheric Input 32P (t1/2=14.3 d） 33P (t1/2=25.3 d） Predation Up-take Phytoplankton Water Column

  6. Zhang et al., ECSS, 2004

  7. Aerosol nutrients over the Yellow Sea (upper panel) and East China Sea (lower panel)

  8. Silica flux (mmol m-2 d-1) at sediment – water interface of the ECS DM: calculation from pore water profile, BC: data from in situ incubations

  9. In the ECS BSi<1%, similar to Chesapeake Bay, Yellow Sea and Bohai.

  10. Impact of Changjiang water on the PN section (East China Sea) in September 2002.

  11. TSM: mg/l

  12. Decreased 8.9 8.1 C/N ratio (atom)

  13. unit: 103 mol/s

  14. unit: 103 mol/s

  15. Towards developing GLOBEC-IMBER Studies in China • OCEANS OSM (Paris, 7-10 January, 2003) • March – May, 2003: Series of workshops on the possibility of integration of GLOBEC and IMBER studies in China • August, 2003: Establishment of a joint working group of GLOBEC and IMBER within frame of CNC-IGBP • May 26-28, 2004: “Xiangshan Forum” on “Sustainable Ecosystem and Biogeochemistry in the Coastal Ocean” (No. 228) • October, 2004: Final examination of GLOBEC-China II “Ecosystem Dynamics and Sustainable Use of Marine Resources in the Yellow Sea and East China Sea” • 2005: Development of national study on GLOBEC-IMBER in China

  16. Thank You!

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