Distribution of reactive aluminum under the influence of mesoscale eddies in the western South China Sea

LIU Jiaxing; ZHOU Linbin; TAN Yehui; WANG Qiong; HU Zifeng; LI Jiajun; JIANG Xin; KE Zhixin

doi:10.1007/s13131-017-1046-7

中尺度涡影响下的南海西部活性铝分布

doi: 10.1007/s13131-017-1046-7

1.
中国科学院南海海洋研究所中国科学院热带海洋生物资源与生态重点实验室, 广东广州 510301;中国科学院南海海洋研究所广东省应用海洋生物学重点实验室, 广东广州 510301;中国科学院大学, 北京 100049
2.
中国科学院南海海洋研究所中国科学院热带海洋生物资源与生态重点实验室, 广东广州 510301;中国科学院南海海洋研究所广东省应用海洋生物学重点实验室, 广东广州 510301

基金项目: The Strategic Priority Research Program of the Chinese Academy of Sciences under contract No. XDA11020305; the National Basic Research Program (973 program) of China under contract No. 2015CB452903; the Special Fund for Agro-scientific Research in the Public Interest under contract No. 201403008; the National Project of Basic Sciences and Technology under contract No. 2017FY201404; the National Natural Science Foundation of China under contract Nos 41506150 and 41276162.

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- 收稿日期: 2016-03-07
- 修回日期: 2016-06-30

Distribution of reactive aluminum under the influence of mesoscale eddies in the western South China Sea

1.
Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;University of Chinese Academy of Sciences, Beijing 100049, China
2.
Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China

摘要

摘要: 为认识南海西部铝分布及对中尺度涡的响应，2013年8月对南海西部海平面高度异常、地转流、环境参数以及活性铝分布进行调查。垂直分布上，受大气沉降影响，表层活性铝浓度最高（180±64 nM）；大部分站位活性铝浓度表现为从表层随深度增加而降低，并在叶绿素a最大值层附近出现最小值，随后再升高的趋势。冷涡站位活性铝100米以浅水柱平均浓度（103±5 nM）显著低于非涡站位（180±21 nM）；相反，冷涡站位叶绿素a和硅酸盐水柱平均浓度显著高于暖涡站位（p <0.01）。在整个研究区域，100米以浅水柱平均活性铝浓度与叶绿素a水柱平均浓度显著负相关，表明研究区域内生物清除作用可以影响铝分布。我们的结果表明，中尺度涡可以通过影响初级生产力和浮游植物群落结构来影响活性铝的分布。
- 活性铝 /
- 中尺度涡 /
- 叶绿素a /
- 生物清除 /
- 浮游植物 /
- 初级生产力 /
- 南海西部
Abstract: To understand the distribution of aluminum (Al) under the influence of mesocale eddies in the western South China Sea (SCS), sea level anomaly, geostrophic current, environmental parameters and reactive Al were investigated in the western SCS in August 2013. The highest reactive Al concentration ((180±64) nmol/L) was observed in the surface waters, indicating a substantial atmospheric input. Vertically, the reactive Al decreased from the surface high concentration to the subsurface minima at the depth of chlorophyll a (Chl a) maxima and then increased again with depth at most of the stations. The average concentration of reactive Al in the upper 100 m water column was significantly lower in the cyclonic eddy ((137±6) nmol/L) as compared with that in the non-eddy waters ((180±21) nmol/L). By contrast, the average concentrations of Chl a and silicate in the upper 100 m water column were higher in the cyclonic eddy and lower in the anticyclonic eddy. There was a significant negative correlation between the average concentrations of reactive Al and Chl a in the upper 100 m water column. The vertical distribution of reactive Al and the negative correlation between reactive Al and Chl a both suggest that the reactive Al in the upper water column was significantly influenced by biological removal processes. Our results indicate that mesoscale eddies could regulate the distribution of reactive Al by influencing the primary production and phytoplankton community structure in the western SCS.
- reactive aluminum /
- mesoscale eddy /
- chlorophyll a /
- biological removal /
- phytoplankton /
- primary production /
- western South China Sea

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中尺度涡影响下的南海西部活性铝分布

doi: 10.1007/s13131-017-1046-7

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出版历程

Distribution of reactive aluminum under the influence of mesoscale eddies in the western South China Sea

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