Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China.
Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China.
Mar Pollut Bull. 2022 Nov;184:114186. doi: 10.1016/j.marpolbul.2022.114186. Epub 2022 Oct 14.
The nutrient status in Laizhou Bay has changed in composition and structure as a result of anthropogenic activities and climate change, which has led to several environmental problems (e.g., eutrophication, organic pollution and red tides). To better understand the spatiotemporal variations in dissolved inorganic nitrogen (DIN), dissolved inorganic phosphorus (DIP), and eutrophication in the Laizhou Bay, we collected historical research data and conducted four cruises in 2021. The highest surface DIN was found to occur in autumn and predominantly concentrated in the southwestern bay. The highest surface DIP content was found in winter and distributed in the northwestern bay. Surface organic pollution showed estuaries as the most polluted areas. In the past 40-60 years, the DIN, DIP, and eutrophication have shown an inverted U-shaped trend, and the bay has changed from N limitation to P limitation. Economic development, phytoplankton absorption, and bottom mineral release are factors influencing the content and distribution of nutrient in the bay.
由于人为活动和气候变化的影响，莱州湾的营养状况在组成和结构上发生了变化，导致了一些环境问题（如富营养化、有机污染和赤潮）。为了更好地了解莱州湾溶解无机氮（DIN）、溶解无机磷（DIP）和富营养化的时空变化，我们收集了历史研究数据，并在 2021 年进行了四次巡航。结果表明，秋季表层 DIN 最高，主要集中在西南部海域。冬季表层 DIP 含量最高，分布在西北部海域。表层有机污染显示河口区为污染最严重的地区。在过去的 40-60 年里，DIN、DIP 和富营养化呈倒 U 型趋势，海湾已由氮限制转变为磷限制。经济发展、浮游植物吸收和底矿物质释放是影响海湾营养物质含量和分布的因素。
