| 西北冰洋中太平洋入流水营养盐的变化特征 |
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| 引用本文： | 李宏亮,陈建芳,高生泉,卢勇,金海燕,金明明,王奎,白有成,张海生.西北冰洋中太平洋入流水营养盐的变化特征[J].海洋学报,2011,33(2):85-95. |
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| 作者姓名： | 李宏亮 陈建芳 高生泉 卢勇 金海燕 金明明 王奎 白有成 张海生 |
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| 作者单位： | 1.国家海洋局 第二海洋研究所 海洋生态系统与生物地球化学重点实验室,浙江 杭州 310012 |
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| 基金项目： | 国家自然科学基金项目(41003036;41076135;40876103);国家海洋局青年海洋科学基金项目(2008602);中国极地战略研究基金(20070201);国家海洋局第二海洋研究所基本科研业务费专项资助(JG0826)。 |
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| 摘 要： | 利用1999,2003和2008年夏季(7-9月)三次中国北极科学考察数据资料,分析和讨论太平洋入流水营养盐的分布和楚科奇海关键生物地球化学过程对太平洋水化学性质的改造.结果表明,2003和2008年在白令海峡南部64.3°N纬向断面(BS断面)由于水团性质差异显著,营养盐呈西高、东低的分布趋势.2003年BS断面水柱...
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| 关 键 词： | 太平洋水 营养盐 脱氮作用 白令海峡 楚科奇海 |
| 收稿时间： | 8/8/2010 12:00:00 AM |
Nutrients variation of the Pacific inflow in the western Arctic Ocean |
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| LI Hong-liang,CHEN Jian-fang,GAO Sheng-quan,LU Yong,JIN Hai-yan,JIN Ming-ming,WANG Kui,BAI You-cheng and ZHANG Hai-sheng.Nutrients variation of the Pacific inflow in the western Arctic Ocean[J].Acta Oceanologica Sinica (in Chinese),2011,33(2):85-95. |
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| Authors: | LI Hong-liang CHEN Jian-fang GAO Sheng-quan LU Yong JIN Hai-yan JIN Ming-ming WANG Kui BAI You-cheng and ZHANG Hai-sheng |
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| Affiliation: | 1.Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanologica Administion Hangzhou 310012 China2.Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanologica Administion Hangzhou 310012 China; State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanologica Administion Hangzhou 310012 China |
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| Abstract: | Nutrients were analyzed for Bering Strait and Chukchi shelf water samples collected during the 1999, 2003 and 2008 arctic expedition of China. Concentrations of nutrients are the highest in the west part of the strait and decrease dramatically to the east part in summer. These spatial distributions of nutrients are depend on water masses (mixed layer, halocline waters, the Anadyr Current, the Alaskan coastal Current, Bering Shelf Current and Anadyr River water), primary production and cyclone. Because of phytoplankton uptake and dilution effect of ice melt water, the concentration of nutrients in the mixed layer (10 m) is lower than the deep layer of the meridian section along 170°W. Below 10 m, nutrients concentrations are higher in the north of 70°N than the southern part of Chukchi Sea because of the Herald shoal and different water mass. Besides physical transport, the variation of organic matter re-mineralization may be another important factor for the nutrients distribution patterns. parameter N*｛N*= ×0.87｝ was applied to discussing the loss of fixed nitrogen to N2 via denitrification or anammox processes. The values of N* in the Bering Strait region are less negative than that in waters of Chukchi Sea, suggested that the Pacific inflow transforms fixed nitrogen to N2 on the Bering Sea shelf.From the negative N* value and lower concentration ratio of(nitrate plus nitrite plus ammonium) to phosphate in th Chukchi Sea that it is inferre the loss of fixed nitrogen in the water-sediment interface will increase nitrogen limitation to the Arctic Ocean phytoplankton growth. |
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| Keywords: | Pacific inflow nutrients denitrification Bering Strait Chukchi Sea |
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