Long-Term Nutrient Variations in the Bohai Sea Over the Past 40 Years

doi:10.1029/2018JC014765

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋生态研究中心

	Long-Term Nutrient Variations in the Bohai Sea Over the Past 40 Years
	Wang, Junjie 1; Yu, Zhigang 1,2; Wei, Qinsheng 2,3; Yao, Qingzhen 1,2
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
	2019-01
卷号	124 期号:1 页码:703-722
关键词	Bohai Sea nutrients riverine inputs atmospheric deposition long-term variation red tides
ISSN号	2169-9275
DOI	10.1029/2018JC014765
英文摘要	As China's only continental sea, the Bohai Sea is a relatively closed environment and is vulnerable to natural changes and human activities. In this paper, the long-term variations in nutrients in the Bohai Sea and the potential influencing factors were analyzed based on historical summer and winter data from 1978 to 2016. The results showed that the concentrations of dissolved inorganic nitrogen (DIN) in the Bohai Sea continuously increased from 1990 and rapidly increased after 2002, the phosphate (PO4-P) concentration exhibited a decreasing trend, and the silicate (SiO3-Si) concentration decreased from 1978 to 1987 and increased from 1987 to 2008. The nutrient concentrations were lower in summer than in winter, and the bottom concentrations were higher than the surface concentrations in summer, whereas the vertical differences were insignificant in winter. The dominant factor determining the long-term variations in DIN were atmospheric deposition and nonpoint sources due to various human activities; the primary factors affecting PO4-P were riverine inputs and nonpoint sources related to natural changes and human activities; the primary factors afftecting SiO3-Si were riverine inputs. The N/P ratio followed the DIN variation, the Si/P ratio followed the SiO3-Si variation, and the Si/N ratio decreased. The nutrient ratios were lower at the bottom than at the surface and were lower in winter than in summer. The nutrient limitation changed from nitrogen limitation to phosphorus and silicon limitations. The long-term nutrient variations in the Bohai Sea have potential ecological impacts on the local red tide features.
资助项目	Fundamental Research Funds for the Central Universities[201822006]
WOS研究方向	Oceanography
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000458718600039
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/10886]
专题	业务部门_海洋生态研究中心
通讯作者	Yao, Qingzhen
作者单位	1.Ocean Univ China, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 3.State Ocean Adm, Inst Oceanog 1, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Wang, Junjie,Yu, Zhigang,Wei, Qinsheng,et al. Long-Term Nutrient Variations in the Bohai Sea Over the Past 40 Years[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2019,124(1):703-722.
APA	Wang, Junjie,Yu, Zhigang,Wei, Qinsheng,&Yao, Qingzhen.(2019).Long-Term Nutrient Variations in the Bohai Sea Over the Past 40 Years.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,124(1),703-722.
MLA	Wang, Junjie,et al."Long-Term Nutrient Variations in the Bohai Sea Over the Past 40 Years".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 124.1(2019):703-722.