莱州湾营养盐空间分布特征及年际变化趋势

doi:10.11840/j.issn.1001-6392.2018.04.007

	莱州湾营养盐空间分布特征及年际变化趋势
其他题名	Annual variation and spatial distribution of nutrients in the Laizhou Bay
	姜会超 ; 王玉珏; 李佳蕙 ; 陶慧敏 ; 白艳艳 ; 苏博 ; 刘东艳
发表期刊	海洋通报
ISSN	1001-6392
	2018-08-15
卷号	37 期号:04 页码:411-423
关键词	莱州湾营养盐空间分布年际变化
研究领域	海洋学
DOI	10.11840/j.issn.1001-6392.2018.04.007
产权排序	(1)中国科学院烟台海岸带研究所海岸环境过程重点实验室; (2)中国科学院大学; (3)山东省海洋资源与环境研究院; (4)华东师范大学河口与海岸国家重点实验室
作者部门	海岸带环境过程实验室
英文摘要	To better understand the distribution and annual variation of nutrients in the Laizhou Bay, a successive survey about dissolved inorganic nitrogen (DIN), phosphate(PO_4-P) and silicate(SiO_3-Si) from 2004 to 2014 was conducted. In the present study, high concentrations of DIN, PO_4-P and SiO_3-Si were located at the southwest coast of the Laizhou Bay, especially at Xiaoqing River estuary and its vicinity. The spatial distributions of nutrients in the Laizhou Bay were mainly influenced by the terrestrial inputs such as Xiaoqing River and itsvicinity. Although, DIN concentrations in the Laizhou Bay from 2004 to 2014 were higher with medians ranging from 8.14 μmol/L to 53.98 μmol/Lthan those in the 80 s and 90 s of the 20th century, anannual variation trend of slight decreased from 2004 to 2014 was shown in the Laizhou Bay. The nitrate was the main form of DIN contributing 83 %, while nitrite and ammonium salt contributing 7 % and 10 %, respectively. Low concentrations of PO_4-P in the Laizhou Bay were observed with medians ranging from 0.03 μmol/L to 0.49 μmol/L with an obvious annual variation trend of decrease. The medians of SiO_3-Si in the Laizhou Bay ranged from 8.5 μmol/L to 52.9 μmol/L with a decrease annual variation trend in August. The temporal distributions of nutrients in the Laizhou Bay were mainly influenced by the nutrients fluxes of Xiaoqinghe River. The medians variation of DIN/PO_4、SiO_3 /DIN and SiO_3 /PO_4 were 78.9~1112.4, 0.2~2.2 and 40.2~442.5, respectively. The annual variation trends of increase for DIN/PO_4 and SiO_3 /PO_4 while no obvious annual variation trend for SiO_3 /DIN were observed from 2004 to 2014. The analysis on nutrient structure indicated that PO_4-P was absolute limitation with the trend of increase while SiO_3-Si was the limitation in May. The nutrient levels of the Laizhou Bay shifted from oligotrophy in the 80 s and 90 s of the 20th century to potential eutrophication of phosphorus limitation during 2004-2014.
中文摘要	基于2004-2014年期间,在莱州湾5月及8月开展的22个航次调查结果,研究了莱州湾营养盐的时空分布特征及年际变化趋势。研究发现:莱州湾溶解态无机氮(DIN)、可溶性磷酸盐(PO_4-P)、可溶性硅酸盐(SiO_3-Si)高值区主要出现在莱州湾西南近岸尤其是小清河口海域,小清河及邻近区域陆源输入是影响莱州湾营养盐空间分布的主要因素。2004-2014年莱州湾DIN中位值变化范围8.14~53.98μmol/L,尽管2004年以来莱州湾DIN浓度呈现降低的年际变化趋势,但仍然高于历史数据。硝酸盐是DIN的主要形态,贡献了DIN组成的83%,亚硝酸盐和铵盐的含量占比分别为7%和10%。莱州湾PO_4-P年际变化呈下降趋势,中位值变化范围为0.03~0.49μmol/L。SiO_3-Si中位值变化范围8.5~52.9μmol/L,8月份年际变化呈下降趋势。小清河营养盐入海通量与莱州湾营养盐含量年际波动具有较好的吻合性,是影响莱州湾营养盐年际波动的重要因素。莱州湾DIN/PO_4、SiO_3/DIN、SiO_3/PO_4中位值变化范围分别为:78.9~1112.4、0.2~2.2、40.2~442.5,其中DIN/PO_4、SiO_3/PO_4年际变化呈升高趋势,SiO_3/DIN年际变化趋势不明显。2004-2014年调查期间,莱州湾存在严重的磷限制及季节性的硅限制,营养类型由20世纪80、90年代的贫营养转变为磷限制潜在性富营养,且磷限制的程度呈加剧趋势。
资助机构	中国科学院战略性先到科技专项#XDA11020405 ; 国家自然科学基金#41376121 ; 山东省自然科学基金杰出青年基金项目#JQ201414
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:6302434
引用统计
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/24323
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
作者单位	1.中国科学院烟台海岸带研究所海岸环境过程重点实验室; 2.中国科学院大学; 3.山东省海洋资源与环境研究院; 4.华东师范大学河口与海岸国家重点实验室
推荐引用方式 GB/T 7714	姜会超,王玉珏,李佳蕙,等. 莱州湾营养盐空间分布特征及年际变化趋势[J]. 海洋通报,2018,37(04):411-423.
APA	姜会超.,王玉珏.,李佳蕙.,陶慧敏.,白艳艳.,...&刘东艳.(2018).莱州湾营养盐空间分布特征及年际变化趋势.海洋通报,37(04),411-423.
MLA	姜会超,et al."莱州湾营养盐空间分布特征及年际变化趋势".海洋通报 37.04(2018):411-423.