Kim Dongseon, Cho Sosul, Kim Ho-Jung, Choi Dong Han
Marine Environmental Research Center, Korea Institute of Ocean Science & Technology, Haeyang-ro 385, Yeongdo-gu, Busan, Republic of Korea.
Marine Environmental Research Center, Korea Institute of Ocean Science & Technology, Haeyang-ro 385, Yeongdo-gu, Busan, Republic of Korea.
Mar Pollut Bull. 2023 Apr;189:114764. doi: 10.1016/j.marpolbul.2023.114764. Epub 2023 Mar 3.
To assess the progression of ocean acidification in the South Yellow Sea (SYS), the aragonite saturation state (Ω) was determined from dissolved inorganic carbon (DIC) and total alkalinity (TA) in the surface and bottom waters of the SYS in spring and autumn. The Ω exhibited large spatiotemporal variations in the SYS; DIC was a major factor controlling the Ω variations, whereas temperature, salinity, and TA were minor factors. Surface DIC concentrations were mainly influenced by the lateral transport of the DIC-enriched Yellow River waters and DIC-depleted East China Sea Surface Water; bottom DIC concentrations were affected by aerobic remineralization in spring and autumn. Ocean acidification is now seriously progressing in the SYS, particularly in the Yellow Sea Bottom Cold Water (YSBCW) where the mean value of Ω substantially decreased from 1.55 in spring to 1.22 in autumn. All Ω values measured in the YSBCW in autumn were lower than the critical threshold value of 1.5 necessary for the survival of calcareous organisms.
为评估南黄海（SYS）海洋酸化的进展情况，通过测定春季和秋季南黄海表层和底层水体中溶解无机碳（DIC）和总碱度（TA）来确定文石饱和度状态（Ω）。Ω在南黄海呈现出较大的时空变化；DIC是控制Ω变化的主要因素，而温度、盐度和TA是次要因素。表层DIC浓度主要受富含DIC的黄河水和贫DIC的东中国海表层水的横向输运影响；底层DIC浓度在春季和秋季受好氧再矿化作用影响。南黄海的海洋酸化目前正在严重加剧，特别是在黄海冷水团（YSBCW），其中Ω的平均值从春季的1.55大幅降至秋季的1.22。秋季在黄海冷水团中测得的所有Ω值均低于钙质生物生存所需的临界阈值1.5。
