Yang Bo, Gao Xuelu, Zhao Jianmin, Lu Yuxi, Gao Tianci
CAS Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
CAS Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
Mar Pollut Bull. 2020 Jan;150:110693. doi: 10.1016/j.marpolbul.2019.110693. Epub 2019 Nov 18.
Fourteen field cruises were carried out in a mariculture region of the northern Shandong Peninsula, North Yellow Sea, China from 2016 to 2017 for a better understanding of the biogeochemical behaviors, sources and export of dissolved inorganic nutrients. The spatial variations of nutrients were not obvious due to the influence of complex hydrological and biochemical conditions. Potential nutritional level was characterized in oligotrophy, and trophic status was rated at medium level. A preliminary estimation of nutrient budgets demonstrated that the dissolved inorganic nitrogen (DIN) load was mainly from atmospheric deposition and scallop excretion, accounting for 56.9% and 35.6% of its total influx. Scallop excretion and sediment release were the major source of phosphate (DIP), contributing to 25.2% and 44.3%, while dissolved silicon (DSi) was mainly from sediment release, accounting for 94.2%. In addition, about 136.7 × 10, 7.3 × 10 and 485.5 × 10 mol km yr of DIN, DIP and DSi could be converted into other forms, e.g. organic and particulate matter and gas species.
2016年至2017年期间，在中国北黄海山东半岛北部的一个海水养殖区进行了14次实地考察航行，以便更好地了解溶解无机养分的生物地球化学行为、来源和输出情况。由于复杂水文和生化条件的影响，养分的空间变化并不明显。潜在营养水平表现为贫营养，营养状态评级为中等水平。对养分收支的初步估计表明，溶解无机氮（DIN）负荷主要来自大气沉降和扇贝排泄物，分别占其总流入量的56.9%和35.6%。扇贝排泄物和沉积物释放是磷酸盐（DIP）的主要来源，分别占25.2%和44.3%，而溶解硅（DSi）主要来自沉积物释放，占94.2%。此外，约136.7×10、7.3×10和485.5×10摩尔千米/年的DIN、DIP和DSi可转化为其他形式，如有机和颗粒物质以及气体种类。
