Dissolved inorganic nitrogen (DIN) , dissolved inorganic phosphorus (DIP) of surface water and other related environmental parameters (Salinity, DO, Chi a) were observed consecutively at two stations in the Xiamen Bay during No.

Based on the data collected in May 1996, this study summarizes the levels and distributions of dissolved inorganic nitrogen in Yalujiang estaury.

Based on the investigation data from the project “Research on the Dynamic of Seawater Circulation and Mass Long Term Transportation”, which was implemented in May 1998, the distribution patterns of dissolved inorganic nitrogen (DIN) in the Southern Yellow Sea in May were discussed.

Effect of DON on HABs in marine aquaculture zone;

The changes in microbial biomass carbon(MBC),microbial biomass nitrogen(MBN),dissolved organic carbon(DOC) and dissolved organic nitrogen(DON) were examined in order to assess the effect of surface layer soil(0～10 cm) under different land-use types after freshwater marshes tillage in the Sanjiang Plain Northeast China.

The present paper is aimed at introducing its authors' examination of the influence of dissolved oxygen level, the wavelength of incident light and the concentration of Fe on the photo-production of DIC mineralization of dissolved organic carbon by using a Suntest CPS solar simulator.

The photochemical mineralization of dissolved organic carbon to dissolved inorganic carbon(DIC) is a key process in carbon cycling.

However,growth inhibition of submersed macrophyte by phyto- plankton may be also due to other important factors including alleloph and DIC competition of phytoplanktion.