[KSCI] Korea Science Citation Index Service

Difference of Nutrients Budgets in the Bohai Sea between 1982 and 1992 related to the Decrease of the Yellow River Discharge

Hayashi, Mitsuru (Research Center for Inland Seas, Kobe University)
Yanagi, Tetsuo (Research Institute for Applied Mechanics, Kyushu University)
Xinyu, Guo (Center for Environmental Management of Enclosed Seas, Ehime University)

Publication Information

Journal of the korean society of oceanography / v.39, no.1, 2004 , pp. 14-19 More about this Journal

Abstract

Difference of Dissolved Inorganic Phosphorus (DIP), Dissolved Inorganic Nitrogen (DIN) and Dissolved Silicate (DSi) budgets in the Bohai Sea between 1982 and 1992 related the decrease of the Yellow River discharge is discussed on the basis of observed data. The estuarine circulation in the Bohai Sea had been weakened from 1982 to 1992 due to the decrease of the Yellow River discharge and the average residence time of fresh water had become longer. DIN concentration increased but DIP and DSi concentrations decreased from 1982 to 1992 in the Bohai Sea. Primary production was regulated mainly by water temperature and DIN concentration in 1982 but it was regulated mainly by DIP concentration in 1992. Primary production was larger than decomposition plus bottom release and nitrogen fixation was larger than denitrification in 1982. However, decomposition plus bottom release was larger than primary production and denitrification was larger than nitrogen fixation in 1992 in the Bohai Sea.

Keywords

Nutrient Cycling; the Bohai Sea; the Yellow River; Lower Trophic Level Ecosystem;

Citations & Related Records

Reference

1	Long-term variations of temperature and salinity of the Bohai Sea and their influence on its ecosystem / [ Lin,C.;Su,J.;Xu,B.;Tang,Q. ] / Progress in Oceanography
2	The fluctuations of primary productivity in Bohai Sea waters over ten years / [ Lu,R.;Xia,B.;Li,B.;Fei,Z. ] / J. Oceanography of Huanghai & Bohai Seas
3	LOICZ Biogechemical Modeling Guidelines / [ Gordon,D.C.Jr;Boudreau,P.R.;Mann,K.H.;Ong,J.E.;Silvert,W.L.;Smith,S.V.;Wattayakorn,G.;Wulff,F.;Yanagi,T. ] / LOICZ Reports and Studies 5
4	Decadal-scale variations of ecosystem productivity and control mechanisms in the Bohai Sea / [ Tang,Q.;Jin,X.;Wang,J.;Cui,Y.;Meng,T. ] / Fisheries Oceanography
5	/ [ Tang,Q.;Meng,T. ] / Atlas of the ecological environment and living resources in the Bohai Sea