长江口区浮游植物营养限制因子的研究 Ⅰ.秋季的营养限制情况

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 Ⅰ.秋季的营养限制情况

中国科学院海洋研究所, 青岛266071

基金项目: 中国科学院重大基金KZ951-B1-403

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出版历程
- 收稿日期: 1999-05-04
- 修回日期: 1999-08-27

Nutrient limitation of phytoplankton in the Changjiang Estuary──Ⅰ. Condition of nutrient limitation in autumn

Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071

摘要

摘要: 1998年11月在长江口及周围海域进行了一个航次的环境调查,并在室内以中肋骨条藻为实验藻种,应用营养加富生物测定法对本海域浮游植物的营养需求状况进行了研究.结果表明,可大致根据离河口的远近将此海域分为3个部分:近河口光限制区、过渡带光和磷酸盐限制区、远河口氮盐限制区.P与N分别为潜在营养限制因子的界线大致沿盐度为31的等盐线.并指出,以溶解无机氮磷比的判断标准,在悬浮物浓度较高的区域会高估磷的限制作用.
- 营养限制 /
- 浮游植物 /
- 长江口
Abstract: During November 20-22, 1998, samples were collected at two stations in the Changjiang Estuary.The nutrients limiting algal growth potential(AGP) are estimated by ratios of dissolved inorganic N to P and by nutrient enrichment bioassays using Skeletonema costatum as the test algae.P was severely limited at two stations by the method of ratios of N to P, but by bioassays P was the most important nutrient regulate phytoplankton growth at Sta.1(31°N, 123°E) and N at Sta.2(31°40'N, 122°40'E).The Changjiang Estuary may be divided into three parts:light-limited area, light-and phosphorus-limited area and nitrogen-limited area
- Changjiang Estuary /
- nutrient limitation /
- phytoplankton

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参考文献(20)

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