海州湾海洋牧场沉积物-水界面营养盐交换通量的研究

发布时间：2018-02-15 19:12

本文关键词： 海州湾沉积物-水界面营养盐交换速率交换通量　出处：《大连海洋大学学报》2016年01期 　论文类型：期刊论文

【摘要】：为研究海洋沉积物-水界面间营养盐的交换状况,进一步了解营养物质的循环动力学和水体富营养化的内在机理,采用实验室培养法,对海州湾海洋牧场2014年春季(5月)5个站位、夏季(8月)6个站位和秋季(10月)6个站位沉积物-水界面营养盐的交换速率和交换通量进行了研究。结果表明:海州湾沉积物-水界面上硅酸盐(Si O2-3-Si)、磷酸盐(PO_4~(3-)-P)在春季表现为由水体向沉积物进行迁移,其交换速率平均值分别为-3.27、-0.32 mmol/(m~2·d),夏季和秋季均表现为由沉积物向水体进行释放,夏季二者的交换速率平均值分别为8.53、0.41 mmol/(m~2·d),秋季分别为4.92、0.32 mmol/(m~2·d);溶解态无机氮(DIN)在春、夏、秋季均表现为由沉积物向水体进行释放,交换速率平均值分别为2.86、3.39、13.04 mmol/(m~2·d);海州湾沉积物-水界面SiO_2-3-Si、PO_4~(3-)-P、DIN的交换通量在3个季节的平均值分别为4.56×10~8、1.82×10~7、8.65×10~8mmol/d,沉积物可为海州湾初级生产力提供66%的SiO_2-3-Si、42%的PO_4~(3-)-P、124%的DIN营养供给。研究表明,海州湾海洋牧场沉积物-水界面营养盐的交换速率与国内外近岸海区相比处于中等水平。
[Abstract]:For the exchange of water of marine sediment and surface nutrients, to further understand the intrinsic mechanism of circulation dynamics and water eutrophication nutrients in the culture by Laboratory of Haizhou Bay Sea ranch in the spring of 2014 (May) at 5 stations, 6 stations in summer (August) and autumn (October) exchange rate 6 at the sediment water interface and nutrient fluxes were studied. The results showed that the sediment water interface in Haizhou Bay on Portland (Si O2-3-Si), phosphate (PO_4~ (3-) -P) in the spring from water to sediment migration, the average exchange rate were -3.27, -0.32, mmol/ (m~2. D), summer and autumn were from sediment release to the water exchange rate, the average value of summer two were 8.53,0.41 mmol/ (m~2 d), 4.92,0.32 mmol/ autumn respectively (m~ 2 D); dissolved inorganic nitrogen (DIN) in spring and summer, Autumn showed grounds to release sediment water exchange rate respectively is 2.86,3.39,13.04 mmol/ (m~2, d); the sediment water interface in Haizhou Bay SiO_2-3-Si, PO_4~ (3-) -P, DIN fluxes in the mean value of the 3 seasons were 4.56 10~ * 10~8,1.82 * 7,8.65 * 10~8mmol/d, can provide the primary sediment the productivity of 66% SiO_2-3-Si as the Gulf of Haizhou, 42% PO_4~ (3-) -P, DIN nutrition 124%. Studies have shown that the rate of exchange at home and abroad and coastal areas of the Haizhou Bay marine ranching of nutrients at the sediment water interface than at the middle level.

【作者单位】：上海海洋大学海洋科学学院;大洋渔业资源可持续开发省部共建教育部重点实验室;国家远洋渔业工程技术研究中心;
【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(D-8006-13-8023,D8006-12-8018) 国家公益性行业(农业)科研专项(201003068)
【分类号】：P734

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