长江口区浮游植物营养限制因子的研究 Ⅱ.春季的营养限制情况

蒲新明; 吴玉霖; 张永山

长江口区浮游植物营养限制因子的研究 Ⅱ.春季的营养限制情况

中国科学院海洋研究所, 山东青岛266071

基金项目: 中国科学院重大基金资助项目(KZ951-B1-403);国家自然科学基金重大资助项目(39790110);国家专项基金资助项目(SX(97)

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出版历程
- 收稿日期: 2000-02-04
- 修回日期: 2000-07-19

Nutrient limitation of phytoplankton in the Changjiang Estuary Ⅱ. Condition of nutrient limitation in spring

Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

摘要

摘要: 1999年5月在长江口及周围海域进行了环境调查,通过对该海域的浮游植物、叶绿素、营养盐、温度、盐度等进行分析,并结合现场实验和室内模拟实验,对本海域浮游植物的营养限制状况进行了研究.调查期间受冲淡水流量、流向和水体垂直分层的影响,冲淡水影响的范围和磷限制的范围相对于1998年11月均有所扩展.现场对26号站的加富实验直接证实了磷的限制作用;室内对26,41号站位的营养加富实验也均证实了磷限制的结论.根据浮游植物的需求和营养盐的补充情况,将该海区划分为:近河口区、冲淡区、台湾暖流影响区和黄海沿岸流影响区.本次调查处在春季水华的结束阶段,因而浮游植物的数量和种类数比1998年11月偏低.
- 营养限制 /
- 浮游植物 /
- 长江口
Abstract: During May 11 to May 15,1999,it was investigated in the Changjiang Estuary and adjacent areas in order to determine nutrient in these areas is the limiting factor of phytoplankton grouth.From the analyses on the distributions of phytoplankton,chlo rophylla,nutrients,temperature and salinity,as well as the result of field and laboratory experiments,it is known that Pis the limiting nutrient in the diluted areas and the limiting intensity is higher than that in November 1998.This is due to the volume and direction of the diluted water and the vertical steady state of water.This area is divided into four parts according to the limiting status of phytoplankton growth.Because this investigation was at the end of the spring bloom,the number of species and density of phy to plankton are much lower than that in November 1998.
- Changjiang Estuary /
- nutrient limitation /
- phytoplankton

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