Abstract：
Due to ever-increasing global warming, ocean acidification, and inshore eutrophication, the outbreak of golden tides with Sargassum horneri has increased in the Yellow sea, where the biomass carbon enters three main carbon pathways: a. Removal of carbon from seawater by salvage, known as removable carbon; b. Biomass carbon is deposited to the seafloor through POC and RDOC through Biological Carbon Pump and Microbial Carbon Pump; c. Re-entering the carbon cycle through the food chain or re-entering the atmosphere through the action of microbes. Estimating carbon fixation (removable carbon) and storage (particulate organic carbon (POC) and refractory dissolved organic carbon (RDOC)) is vital in studying the global carbon cycle. In this research, it was observed that the C content of S. horneri was high, and the utilization rate of dissolved organic carbon (DOC), RDOC, and POC was also high in the eutrophication environment, where only 2.71 % of algal biomass carbon was converted to RDOC, and only 0.20 % converted to POC. The C + N + P combination has a restart effect on the seasonal accumulation of RDOC in relevant sea areas. It is suggested that the salvage and resource utilization should be strengthened to effectively control the golden tide and reduce the substantial economic losses to realize the win-win situation of carbon sink and environmental restoration.
摘要：
由于全球变暖加剧,海洋酸化,和近海富营养化，黄海爆发的金潮增加了，生物质碳进入三个主要的碳途径：a。通过打捞从海水中去除碳，称为可去除碳；b。生物质碳通过生物碳泵和微生物碳泵通过POC和RDOC沉积到海底；c。通过食物链重新进入碳循环或通过微生物的作用重新进入大气。评估碳固定（可去除碳）和存储（颗粒有机碳（POC）和难降解溶解有机碳（RDOC））对于研究全球碳循环至关重要。在这项研究中,观察到S.horneri的C含量很高，和溶解有机碳(DOC)的利用率，RDOC,富营养化环境中的POC也很高，只有2.71%的藻类生物质碳转化为RDOC，只有0.20%转化为POC。C+N+P组合对相关海域RDOC的季节性积累具有重启效应。建议加强打捞和资源利用，有效控制金潮，减少实质性经济损失，实现碳汇与环境修复的双赢。
