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2012年楚科奇海及其邻近海域浮游植物现存量和初级生产力粒级结构研究

乐凤凤,  郝锵,  金海燕,  李涛,  庄燕培,  翟红昌,  刘诚刚,  陈建芳

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文章导航 > 海洋学报  > 2014 >  36(10): 103-115
乐凤凤, 郝锵, 金海燕, 李涛, 庄燕培, 翟红昌, 刘诚刚, 陈建芳. 2012年楚科奇海及其邻近海域浮游植物现存量和初级生产力粒级结构研究[J]. 海洋学报, 2014, 36(10): 103-115. doi: 10.3969/j.issn.0253-4193.2014.10.011
引用本文: 乐凤凤, 郝锵, 金海燕, 李涛, 庄燕培, 翟红昌, 刘诚刚, 陈建芳. 2012年楚科奇海及其邻近海域浮游植物现存量和初级生产力粒级结构研究[J]. 海洋学报, 2014, 36(10): 103-115. doi: 10.3969/j.issn.0253-4193.2014.10.011
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Le Fengfeng, Hao Qiang, Jin Haiyan, Li Tao, Zhuang Yanpei, Zhai Hongchang, Liu Chenggang, Chen Jianfang. Size structure of standing stock and primary production of phytoplankton in the Chukchi Sea and the adjacent sea area during the summer of 2012[J]. Haiyang Xuebao, 2014, 36(10): 103-115. doi: 10.3969/j.issn.0253-4193.2014.10.011
Citation: Le Fengfeng, Hao Qiang, Jin Haiyan, Li Tao, Zhuang Yanpei, Zhai Hongchang, Liu Chenggang, Chen Jianfang. Size structure of standing stock and primary production of phytoplankton in the Chukchi Sea and the adjacent sea area during the summer of 2012[J]. Haiyang Xuebao, 2014, 36(10): 103-115. doi: 10.3969/j.issn.0253-4193.2014.10.011
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2012年楚科奇海及其邻近海域浮游植物现存量和初级生产力粒级结构研究

doi: 10.3969/j.issn.0253-4193.2014.10.011
  • 1.

    国家海洋局 第二海洋研究所 浙江 杭州 310012;国家海洋局海洋生态系统与生物地球化学重点实验室, 浙江 杭州 310012

  • 2.

    国家海洋局 第二海洋研究所 浙江 杭州 310012;国家海洋局海洋生态系统与生物地球化学重点实验室, 浙江 杭州 310012;卫星海洋环境动力学国家重点实验室, 浙江 杭州 310012

  • 3.

    中国海洋大学, 山东 青岛 266003

基金项目: 国家自然科学基金项目（41206181，41306162）；南北极环境综合考察与评估专项（CHINARE2012-03-05，CHINARE2014-04-03）。

Size structure of standing stock and primary production of phytoplankton in the Chukchi Sea and the adjacent sea area during the summer of 2012

  • 1.

    Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Key Lab of Marine Ecosystems and Biogeochemistry State Oceanic Administration, Hangzhou 310012, China

  • 2.

    Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Key Lab of Marine Ecosystems and Biogeochemistry State Oceanic Administration, Hangzhou 310012, China;State key Laboratory of Satellite Ocean Environment Dynamics, Hangzhou 310012, China

  • 3.

    Ocean University of China, Qingdao 266003, China

    摘要
  • 摘要: 通过2012年夏季第五次北极科学考察期间在楚科奇海及其邻近海域现场调查所获得的数据分析研究了海域的粒度分级叶绿素a浓度和初级生产力。结果表明，叶绿素a浓度和初级生产力的高值均出现在楚科奇海陆架区，并且远高于深海区。去程时调查海域水层平均叶绿素a浓度的变化范围为0.32~15.66 mg/m3，平均（2.77±3.96）mg/m3，高值区出现在南部邻近白令海峡海域、北部阿拉斯加巴罗近岸和冰缘区；初级生产力的范围为50.11~943.28 mg/（m2·d），高值出现在冰缘水华区。返程时水层平均叶绿素a浓度的变化范围为0.07~1.52 mg/m3，平均（0.41±0.40）mg/m3，高值仍出现在陆架区，但比去程时低了一个数量级；初级生产力的分布范围为12.31~41.35 mg/（m2·d），高值出现在陆架区。浮游植物粒度分级测定结果表明，在生物量较低的深海区，叶绿素a浓度和初级生产力的粒级结构以微微型浮游生物（Pico级份）占优势（其贡献率分别为46.1%和56.9%），小型（Net级份）和微型（Nano级份）对总叶绿素a浓度的贡献差异极小，分别为26.6%和27.3%，对总初级生产力的贡献分别为23.8%和19.3%；而在生物量较高的水深小于200 m的陆架区，Net级份叶绿素a浓度所占百分比最高，Pico级份次之，Nano级份最低，分别为59.8%、27.9%和12.3%，初级生产力的粒级结构中叶绿素a浓度所占百分比由高到低同样是Net、Pico和Nano，所占百分比分别为60.6%，32.2%和7.2%。
    Abstract: Size fractionated standing stock and primary production of phytoplankton in the Chukchi Sea and the adjacent sea area were studied during the 5th Chinese National Arctic Research Expedition in the summer of 2012. The results clearly showed that there was marked feature of spatial zonation in the sea areas investigated. In the shelf region, the standing stock and primary production were much higher than those of deep-sea area. The water column integrated average values of Chl a concentration varied from 0.32 to 15.66 mg/m3 [on average (2.77±3.96)mg/m3] during the outward voyage. The high values appeared in the southern Chukchi Sea, coast areas near Point Barrow of Alaska and northern ice edge area. The lowest and highest value of primary production (PP) were 50.11 mg/(m2·d) and 943.28 mg/(m2·d), and the high value was encountered in the ice edge where phytoplankton bloom happened. During the return voyage, the water column integrated average value of Chl a concentration was an order of magnitude lower than the outward voyage. The values of PP were 12.31~41.35 mg/(m2·d), with the high value appearing in the shelf region. The results of size-fractionated Chl a and PP showed that photosynthetic picoplankton was the greatest contributor to phytoplankton stocks and production in deep-sea area (46.1% and 56.9% respectively), and the differences between contributions of microplankton and nanoplankton to Chl a and PP were very small. But in the shelf region, microplankton took the dominant position of Chl a(59.8%) and PP (60.6%), picoplankton second and nanoplankton the minimum.
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  • 收稿日期:  2014-02-16
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