资源环境科技发展态势分析平台

We estimated the seasonal extremes in pH and the aragonite saturation state (Ω_arag) for the Yellow Sea over the past 30 years using recent (2015–2018) carbonate datasets, along with historical datasets of surface N and bottom water dissolved O₂ concentrations. The rate of increase in surface N was assumed to set the post‐bloom surface dissolved inorganic C concentration resulting from the complete utilization of N by phytoplankton, while the decrease in bottom water O₂ was assumed to reflect the pre‐bloom surface C, as a consequence of C‐rich bottom water (resulting from the transport of greater amounts of organic matter from the surface) being brought to the surface. With the increasing load of anthropogenic N, the net community metabolism (an increase in organic matter production at the surface and subsequent remineralization at the seafloor) has lowered the seasonal amplitude of pH by 0.14, but increased the amplitude of Ω_arag by 0.8.