海州湾海洋牧场人工鱼礁投放对营养盐的影响

发布时间：2018-01-02 19:12

本文关键词：海州湾海洋牧场人工鱼礁投放对营养盐的影响　出处：《环境科学学报》2017年08期 　论文类型：期刊论文

【摘要】：为了解海州湾海洋牧场人工鱼礁投放对营养盐的影响,基于2008—2015年间共24个航次水质调查资料,分析了海州湾海洋牧场鱼礁区和对照区活性磷酸盐(PO_4~(3-)-P)、活性硅酸盐(SiO_3~(2-)-Si)和溶解无机氮(DIN)的浓度、组成及营养盐结构的变化.同时,比较了鱼礁区和对照区营养盐的变化,初步分析了人工鱼礁投放量与营养盐的相关性,尝试探索人工鱼礁投放对营养盐浓度与结构的影响.结果表明,鱼礁区和对照区PO_4~(3-)-P、SiO_3~(2-)-Si浓度均呈现出秋季夏季春季的特点,且鱼礁区高于对照区.DIN在鱼礁区和对照区也呈现出同样的季节变化特点,但鱼礁区的变化幅度显著大于对照区.海洋牧场人工鱼礁的投放使鱼礁区PO_4~(3-)-P和DIN浓度增加.受热力学平衡的影响,对照区DIN浓度也出现了增加,而PO_4~(3-)-P受人工鱼礁投放的影响小.鱼礁区和对照区SiO_3~(2-)-Si受人工鱼礁投放影响均不明显.另外,海洋牧场DIN组成也发生了改变,2012年前NO_3~--N为DIN主要组成,之后为NH_4~+-N.营养盐结构分析显示,海州湾海洋牧场营养盐对浮游植物主要表现为磷限制.
[Abstract]:In order to understand the Haizhou Bay marine ranching artificial fish reef effect on nutrient, 2008 - 2015 years a total of 24 cruises water quality based on investigation data, analysis of the Haizhou Bay marine ranching reef area and control area of active phosphate (PO_4~ (3-) -P), the activity of Portland (SiO_3~ (2-) -Si) and dissolved inorganic nitrogen (DIN) concentration, changes in composition and nutrient structure. At the same time, compare the change of the reef area and control area of nutrients, preliminary analysis of the correlation between the amount of artificial fish reefs with nutrients, and try to explore the influence on the concentration of artificial fish reefs and nutrient structure. The results show that the reef area and control area PO_4~ (3-) -P, SiO_3~ (2-) -Si concentrations were characterized by the spring and summer autumn, reef area is higher than that of the control region of.DIN in the reef area and control area also showed seasonal variation characteristics of the same, but the change of the amplitude of the reef area was significantly higher than the control area. Marine ranching The deployment of artificial reefs to PO_4~ reef area (3-) increased -P and DIN concentration. Under the influence of thermodynamic equilibrium, the control area of DIN concentration also increased, while the PO_4~ (3-) -P was affected by the artificial fish reefs. The small reef area and control area SiO_3~ (2-) -Si by artificial reef put in effect was not obvious. In addition, the sea ranch DIN composition has changed, before 2012 NO_3~--N as the main components of DIN, after the analysis showed that the NH_4~+-N. nutrient structure, Haizhou Bay Marine pasture nutrients on phytoplankton mainly for phosphorus limitation.

【作者单位】：上海海洋大学海洋生态与环境学院;大洋渔业资源可持续开发省部共建教育部重点实验室;江苏省海洋与渔业局;上海海洋大学海洋科学学院;
【基金】：农业部转产转业项目-江苏省海州湾海洋牧场示范项目(No.D-8006-12-0018,D8006-15-8014) 国家公益性行业(农业)科研专项(No.201303047)~~
【分类号】：P734;S953.1
【正文快照】： 1 引言(Introduction) 海水中的营养盐是浮游植物的重要营养来源,营养盐浓度和结构的改变会对浮游植物群落产生直接影响.而浮游植物是海洋中低营养级的主体,其种群和数量的改变会导致整个海洋生态系统结构和功能的变化.营养盐浓度过低会限制浮游植物的生长与繁殖,浓度过高或

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