| 长江口低氧区及邻近海域浮游植物群落初步研究 |
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| 引用本文： | 马永存,徐 韧,何培民,刘材材,秦玉涛,季 晓,董 鹏.长江口低氧区及邻近海域浮游植物群落初步研究[J].上海海洋大学学报,2013,22(6):903-911. |
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| 作者姓名： | 马永存 徐 韧 何培民 刘材材 秦玉涛 季 晓 董 鹏 |
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| 作者单位： | 国家海洋局东海环境监测中心,国家海洋局东海环境监测中心,上海海洋大学,国家海洋局东海环境监测中心,国家海洋局东海环境监测中心,上海海洋大学,上海海洋大学 |
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| 基金项目： | 海洋公益性行业科研专项经费项目—大河口邻近海域缺氧区灾害预警预报技术与业务化示范（201205015）；国家高技术研究发展(863)计划海洋技术领域重大海洋赤潮灾害实时监测与预警系统（2007AA092004）。国家科技支撑计划课题（2012BAC07B03）。 |
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| 摘 要： | 2011年8月对长江口低氧区及邻近海域16个站位进行了综合调查，低氧区主要位于底层，溶解氧最低值为1.85 mg/L，核心低氧区面积约为1 028 km2。对采集的82个浮游植物样品采用Utermhl方法分析，鉴定出4门37属82种，硅藻占优势，优势种是中肋骨条藻（Skeletonema costatum），生态类型以温带近岸性和广盐性为主，细胞丰度介于6.31×103~7.80×106cells/L，平均值为7.59×105 cells/L，分布特征是从近岸到外海、表层到底层呈降低的趋势。发现核心低氧区、非核心低氧区和非低氧区内浮游植物种类无明显差异，但细胞丰度、多样性指数和均匀度指数均依次为核心低氧区〉非核心低氧区〉非低氧区，溶解氧的多寡对浮游植物细胞丰度没有显著影响。同时还发现浮游植物细胞丰度与温度、化学需氧量、叶绿素a和硝酸盐浓度呈显著正相关，与盐度呈显著负相关，而与溶解氧、磷酸盐、悬浮物，氨氮有相关性但不显著。
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| 关 键 词： | 长江口 低氧区 浮游植物 群落 |
| 收稿时间： | 2012/12/27 0:00:00 |
| 修稿时间： | 2013/3/23 0:00:00 |
Preliminary study on phytoplankton community of Yangtze River estuary hypoxia area and the adjacent East China Sea |
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| MA Yong-cun,XU Ren,HE Pei-min,LIU Cai-cai,QIN Yu-tao,JI Xiao and DONG Peng.Preliminary study on phytoplankton community of Yangtze River estuary hypoxia area and the adjacent East China Sea[J].Journal of Shanghai Ocean University,2013,22(6):903-911. |
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| Authors: | MA Yong-cun XU Ren HE Pei-min LIU Cai-cai QIN Yu-tao JI Xiao and DONG Peng |
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| Institution: | East China Sea Environmental Monitoring Center,SOA,East China Sea Environmental Monitoring Center,SOA,Shanghai Ocean University,East China Sea Environmental Monitoring Center,SOA,East China Sea Environmental Monitoring Center,SOA,Shanghai Ocean University,Shanghai Ocean University |
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| Abstract: | A comprehensive investigation was carried out at 16 stations in the Yangtze River hypoxia area and the adjacent East China Sea in August, 2011. The hypoxia area located in the bottom with an area of about 1 028 km2 and the lowest dissolved oxygen concentration was measured to be 1.85 mg/L. Total 82 water samples of phytoplankton were collected in this sea area and were analyzed by Utermhl method. 82 phytoplankton species was indentifed and belonged to 37 genera of 4 classes. Diatoms were the dominant population in the area, and Skeletonema costatum was the dominant species. The phytoplankton ecological type belonged to temperate zone nearshore algae and euryhaline algae. Cell abundance of phytoplankton ranged from 6.31×103 cells/L to 7.80×106 cells/L, and the average cell abundance was about 7.59×105 cells/L. The phytoplankton cell abundance reduced rapidly from water surface layer to bottom. It was found that the cell abundance, diversity index, evenness index was the core low oxygen area 〉 not core low oxygen area 〉 the non low oxygen area in turn, but there were no significant difference for phytoplankton species. And the phytoplankton cell abundance had the positive relation with temperature, COD, chlorophyll a,and nitrate concentration, but the negtive relation with salinity. And there was no significant effect between the phytoplankton cell abundance and the dissolved oxygen content, suspended matter content, phosphlate and ammonia nitrogen concentration. |
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| Keywords: | Changjiang Estuary Hypoxia area Phytoplankton community |
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