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Difference of water and nutrients budgets in estuary of the Yellow River between 80's and 90's

机译：黄河入海口80年代和90年代水和养分预算的差异

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摘要

Difference of Dissolved Inorganic Nitrogen (DIN) and Dissolved Inorganic Phosphorus (DIP) budgets in the Bohai Sea between 1980s and 1990s 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 80s to 90s 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 concentrations decreased from 80s to 90s in the Bohai Sea. Primary production was regulated mainly by water temperature and DIN concentration in 80s but it was regulated mainly by DIP concentration in 90s. Primary production was larger than decomposition plus bottom release and nitrogen fixation was larger than denitrification in 90s. However, decomposition plus bottom release was larger than primary production and denitrification was larger than nitrogen fixation in 90s in the Bohai Sea.
机译：在观测数据的基础上，讨论了1980年代至1990年代与黄河流量减少有关的渤海溶解无机氮（DIN）和溶解无机磷（DIP）预算的差异。由于黄河流量的减少，渤海的河口环流从80年代减弱到90年代，淡水的平均停留时间变长了。渤海的DIN浓度增加，但DIP浓度从80年代降低到90年代。初级生产主要受水温和DIN浓度在80年代调节，但主要受DIP浓度在90年代调节。在90年代，初产大于分解加底部释放，固氮大于反硝化。然而，在90年代，渤海海域的分解加底部释放量大于一次生产，反硝化作用大于固氮作用。

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