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2012年冬季南海西北部营养盐浓度分布及结构特征     被引量:2

Concentration distribution and structural features of nutrients in the northwest of the South China Sea in winter 2012

文献类型:期刊文献

中文题名:2012年冬季南海西北部营养盐浓度分布及结构特征

英文题名:Concentration distribution and structural features of nutrients in the northwest of the South China Sea in winter 2012

作者:黄亚楠[1,2];陈法锦[1];赵辉[1];曾珍[1];陈建芳[3]

机构:[1]广东海洋大学海洋与气象学院,广东湛江524088;[2]高雄海洋科技大学海洋环境工程系暨研究所,台湾高雄81157;[3]国家海洋局第二海洋研究所,浙江杭州310012

年份:2015

卷号:34

期号:3

起止页码:310

中文期刊名:应用海洋学学报

外文期刊名:Journal of Applied Oceanography

收录:CSTPCD、、北大核心2014、北大核心、CSCD_E2015_2016、CSCD

基金:国家自然科学基金资助项目(41476066;41376125;91128212);广东海洋大学校选资助项目(1312437;1312155);国家海洋局第二海洋研究所开放基金资助项目(LMEB201404)

语种:中文

中文关键词:海洋化学;营养盐;叶绿素a;营养盐结构;分布特征;南海西北部

外文关键词:marine chemistry; nutrient; chl-a; nutrient condition; distribution features; the northwestern South China Sea

中文摘要:通过分析2012年12月南海西北部海水中营养盐和叶绿素a浓度的数据,讨论了南海西北部海域冬季营养盐分布与结构状况.结果表明:南海西北部冬季A区(粤西沿岸)表层营养盐浓度受到冲淡水和沿岸流的影响较大,表层水的N/P、Si/N和Si/P比值均略高于Redfield比值.而B区(琼东海域)和C区(外海海域)营养盐浓度较少受到河流输入的影响.B区表层水的N/P、Si/N和Si/P比值均低于Redfield比值;B区较低的N/P比值可能与海水中的脱氮作用有关.而C区N/P比值则是Redfield比值的2倍,这可能与该区真光层(75 m以浅)固氮生物的固氮作用有关;C区也存在缺硅现象,尤其是在C区的真光层(75 m以浅)缺硅更显著.

外文摘要:The distribution features of nutrients and nutrient structure in the northwest of the South China Sea( SCS),were studied on the basis of the Winter Cruise in December 2012. The results showed that affected by diluted water and coastal currents ratios of N / P,Si / N and Si / P in the surface water of Area A( the coastal waters of Western Guangdong) are slightly higher than the Redfield ratio. However,in Area B( the eastern of Hainan Is-land) and Area C( the open waters) where nutrients input from rivers are lack,ratios of N / P,Si / N and Si / P are lower than Redfield ratio,probably due to denitrification in the surface water of area B. In contrast,the ratio of N / P is 2 times of Redfield radio in Area C,where it may be the result of nitrogen fixation by diazotroph in the euphotic water layers shallower than 75 meters. It also showed that there may be a silicon deficiency,especially in the same euphotic water layers of Area C.

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