摘要
文章依据2018年8月、10月及2019年4月、6月庙岛群岛海域4个航次的调查资料,分析该海域不同月份DIN、PO_(4)^(-)P、SiO_(3)-Si的平面分布及限制特征。结果表明:庙岛群岛海域DIN浓度范围为0.82~95.14μmol/L,平均值为5.27μmol/L,在2018年8月最高;PO_(4)^(-)P浓度范围为未检出至2.12μmol/L,平均值为0.19μmol/L,在2018年10月最高;SiO_(3)-Si浓度范围为0.25~48.93μmol/L,平均值为5.38μmol/L,在2018年8月最高;总体而言,庙岛群岛海域夏季营养盐浓度较高,春季营养盐相对匮乏。庙岛群岛海域2018年8月、10月和2019年6月为PO_(4)^(-)P限制,2019年4月为SiO_(3)-Si和PO_(4)^(-)P限制;PO_(4)^(-)P限制使海域初级生产力受到一定限制,对海水养殖业造成一定影响;SiO_(3)-Si浓度低不利于硅藻生长,从而间接助长甲藻繁殖,因而庙岛群岛海域春季易引发赤潮。
This paper analyzed the horizontal distribution and limitation of DIN,PO_(4)^(-)P and SiO_(3)-Si based on the four surveys of Miaodao Archipelago sea area in August and October of 2018,April and June of 2019.The results showed that the concentration of DIN ranged from 0.82μmol/L to 95.14μmol/L with an average value of 5.27μmol/L and the maximum was in August of 2018.The concentration of PO_(4)^(-)P ranged from“not detected”to 2.12μmol/L with an average value of 0.19μmol/L and the maximum was in October of 2018.The concentration of SiO_(3)-Si ranged from 0.25μmol/L to 48.93μmol/L with an average value of 5.38μmol/L and the maximum was in August of 2018.In general,the concentration of nutrients was higher in summer and was relatively scarce in spring.PO_(4)^(-)P was the limiting factor in August and October of 2018,June of 2019,while SiO_(3)-Si and PO_(4)^(-)P were the limiting factors in April of 2019.The PO_(4)^(-)P limitation would limit the primary productivity of sea area and the aquaculture could be influenced.The low content of SiO_(3)-Si was not conducive to the growth of diatoms,which indirectly promoted the reproduction of dinoflagellates,so that this area was easy to cause red tide in spring.
作者
史雪洁
王立明
李佳蕙
田泽丰
孙珊
齐延民
由丽萍
马元庆
SHI Xuejie;WANG Liming;LI Jiahui;TIAN Zefeng;SUN Shan;QI Yanmin;YOU Liping;MA Yuanqing(Shandong Marine Resource and Environment Research Institute,Yantai 264006,China;Shandong Key Laboratory of Marine Ecological Restoration,Yantai 264006,China)
出处
《海洋开发与管理》
2023年第10期104-113,共10页
Ocean Development and Management
基金
山东省重点研发计划项目(2019JZZY020705).
关键词
庙岛群岛
营养盐平面分布
营养盐结构
营养盐限制
Miaodao Archipelago
Horizontal distribution of nutrients
Nutrients structure
Nutrients limitation
