Studies on primary productivity model in shallow mixed waters

In shallow mixed waters, light intensity, transparency, water temperature, salinity and Chl a concentration are measured throughout the year, as well as variation of light intensity and Chl a over the course of the day.Primary productivity in these waters is determined with a P-I model and the conventional method at the same time.The results show that the vertical profile of phytoplankton and Chl a in the shallow mixed waters is even, the P-I model method can estimate primary productivity of the water body more accurately.Being calibrated, the biases from the conventional method can be reduced greatly.In this paper, primary productivity in the shallow mixed wates along the coast of Shandong Province determined with the conventional method is corrected from the developed P-I model.