Temporal and spatial variations and impact factors of nutrients in Bohai Bay, China.

The temporal and spatial distributions of dissolved inorganic nitrogen (DIN), dissolved inorganic phosphorus
(DIP), and dissolved silicate (DSi), and their long-term changes were investigated in Bohai Bay (BHB) in spring,
summer, and autumn (2013–2014). The high DIN values were consistently distributed in the western inshore
waters, mainly determined by terrestrial factors, e.g., riverine input, while DIP and DSi were mostly distributed
in the southern coastal waters, the central BHB, or near the sea port Caofeidian in northern BHB, largely related
to non-terrestrial factors, e.g., sediment release. Based on the nutrient distribution, BHB could be partitioned into
western and eastern parts, with −15m depth as the separation. The long-term variations of nutrients since 2000
showed an increase in DIN and decreases in DIP and DSi. Relatively slow changes in DIN and DIP and a rapid
decrease in DSi were exhibited in summer, which was associated with precipitation and sediment release.
Publication Name: 
Marine pollution bulletin
Year: 
2019
Volume: 
140
Page Number: 
549-562
Author: 
Liu, Xihan; Liu, Dongyan; Wang, Yujue; Shi, Yajun; Wang, Yanxia; Sun, Xiyan
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