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当前位置: 首页 > 文章 > 南沙海域夏季氮磷添加模拟实验中浮游植物群落的变化 南方水产科学 2015,11 (5) 56-66
Position: Home > Articles > Influence of nitrogen and phosphorus enrichment on phytoplankton community structure in Nansha area in summer South China Fisheries Science 2015,11 (5) 56-66

南沙海域夏季氮磷添加模拟实验中浮游植物群落的变化

作  者：
陈露;李纯厚;魏小岚;刘永;陈作志;戴明;肖雅元;林琳
单  位：
中国水产科学研究院南海水产研究所;暨南大学生命科学技术学院
关键词：
南沙海域;浮游植物;现场加富模拟实验;氮;磷
摘  要：
为探讨夏季南沙海域氮(N)、磷(P)加富对浮游植物群落结构的影响,2013年夏季在南沙海域西南大陆架S1站(9°30'N,109°30'E)和曾母暗沙附近S2站(4°30'N,109°30'E)进行了多组添加N、P营养盐的现场加富实验。通过实验和数据分析对2个站位的浮游植物种类组成、丰度、多样性指数变化和群落更替情况进行了研究。结果表明:1)营养加富后浮游植物种类数增加;2)各加富组随着添加浓度增高,Shannon-Wiener多样性指数下降;3)从添加单一营养盐到复合营养盐组,浮游植物群落的优势类群出现了从甲藻到硅藻的演替;4)营养盐加富在短期内会使浮游植物丰度快速增加,但超过一定水平后,其促进作用减弱甚至抑制甲藻的生长;5)随着各组营养盐添加浓度的增高,加N、加P组的种群总丰度和甲藻门、硅藻门丰度变化不大,加N+P组的总丰度和硅藻门丰度显著上升,甲藻门丰度显著下降,说明N和P共同限制了浮游植物生长。
译  名：
Influence of nitrogen and phosphorus enrichment on phytoplankton community structure in Nansha area in summer
作  者：
CHEN Lu;LI Chunhou;WEI Xiaolan;LIU Yong;CHEN Zuozhi;DAI Ming;XIAO Yayuan;LIN Lin;Guangdong Provincial Key Lab.of Fishery Ecology Environment;Key Lab.of South China Sea Fishery Resources Exploitation &Utilization,Ministry of Agriculture;South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences;College of Fisheries and Life Science,Shanghai Ocean University;Life Science and Technology College of Jinan University;
关键词：
Nansha area;;phytoplankton;;nutrient enrichments in situ incubation;;nitrogen;;phosphorus
摘  要：
To investigate the potential influence of nitrogen and phosphate on phytoplankton community structure,we conducted field experiments and enrichment incubation experiments in Nansha area [the southwest continental shelf and near the James shoal area: S1( 9°30'N,109°30'E) and S2( 4°30'N,109°30'E) ]in summer of 2013. The results show that: 1) The number of phytoplankton species increased after enrichment; 2) Shannon-Wiener diversity index declined with increasing nutrient concentration; 3) Pyrrophyta and Bacillariophyta were the dominant species before and after the enrichment incubation,respectively. Pyrrophyta had more competitive advantages than Bacillariophyta in the oligotrophic region,leading to the shift from Pyrrophyta to Bacillariophyta; 4) Nutrient enrichment caused rapid growth of phytoplankton in a short time,but it inhibited phytoplankton growth when exceeding a certain level and the inhibition was associated with the phytoplankton species; 5) With increasing nutrients concentration in each group,the abundance of Pyrrophyta and Bacillariophyta in single N andsingle P groups had little change,but the abundance of Pyrrophyta in mixed N and P groups decreased significantly,and the abundance of Bacillariophyta increased significantly. Mixed N and P limited the phytoplankton growth.

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