Long-term variations and influence factors of nutrients in the western North Yellow Sea, China
Long-term variations and influence factors of nutrients in the western North Yellow Sea, China
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北黄海西部营养盐长期变化及影响因素
DOI：
10.1016/j.marpolbul.2018.08.034
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发表时间：
2018-10-01
影响因子：
5.8
通讯作者：
Yao, Qingzhen
中科院分区：
文献类型：
--
作者：
Yang, Fuxia;Wei, Qinsheng;Yao, Qingzhen
根据历史资料，研究了北黄海西部海域营养盐的长期变化、组成及其影响因素。NO3-N、DIN浓度和N/P在过去20年中呈持续上升趋势，主要受黄河、鸭绿江、贾河等河流输入和大气沉降的影响。然而，由于人类活动，如在河流中筑坝和气候变化，SiO 3-Si浓度和Si/P比值在20世纪90年代初之前下降，然后逐渐上升。夏季营养盐的垂直分布表现为底层高于表层，这是温跃层、黄海冷水团、黄海暖流和生物活动共同作用的结果。
This study investigated the long-term variations and compositions of nutrients and the associated controlling factors in the western North Yellow Sea on the basis of historical data. The NO3-N and DIN concentrations and N/P showed continuous increases over the past two decades, which were dominantly affected by riverine inputs, such as inputs from the Yellow River, Yalujiang River and Jia River and atmospheric deposition. However, due to human activities, such as dam construction in rivers and climate change, the SiO3-Si concentrations and Si/P ratios decreased before the early 1990s and then gradually increased. The vertical distributions of nutrients displayed higher concentrations at the bottom than those at the surface in summer, which was attributed to the combined influence of the thermocline, the Yellow Sea Cold Water Mass, the Yellow Sea Warm Current and biological activities.