| 黄海和东海营养盐分布及其对浮游植物的限制 |
| |
| 引用本文： | 王保栋.黄海和东海营养盐分布及其对浮游植物的限制[J].应用生态学报,2003,14(7):1122-1126. |
| |
| 作者姓名： | 王保栋 |
| |
| 作者单位： | 国家海洋局第一海洋研究所,青岛,266061 |
| |
| 基金项目： | 国家重点基础研究发展规划资助项目 ( 2 0 0 1CB40 970 3 ) . |
| |
| 摘 要： | 根据1997～1999年黄海和东海4个季节的现场调查资料，分析探讨了黄海、东海的营养盐分布特征及其对浮游植物生长的限制状况．结果表明，在长江口以东及其东北部海域终年存在一个范围很大的营养盐高值区．分析表明，这些营养盐主要来自长江冲淡水的扩展及苏北沿岸流的输送．此外，还获得了1998年长江流域特大洪水期间，迄今被观测到的长江冲淡水中营养盐的最大扩展范围,计算并研究了黄海、东海上层水中Si／N／P比值，结果表明，黄东海上层水中Si／N比值较高，Si不会成为黄东海浮游植物生长的限制因子；但在南黄海南部尤其是西南部、东海近岸及长江口以东海域，N／P比值很高(>30)，说明与一般海洋环境的情况不同，黄海、东海有很大一部分海域浮游植物的生长受磷限制，而不是受氮限制．
|
| 关 键 词： | 营养盐 营养盐限制 黄海 东海 长江口 |
| 文章编号： | 1001-9332(2003)07-1122-05 |
| 修稿时间： | 2002年12月18 |
Nutrient distributions and their limitation on phytoplankton in the Yellow Sea and the East China Sea |
| |
| WANG Baodong.Nutrient distributions and their limitation on phytoplankton in the Yellow Sea and the East China Sea[J].Chinese Journal of Applied Ecology,2003,14(7):1122-1126. |
| |
| Authors: | WANG Baodong |
| |
| Affiliation: | First Institute of Oceanography, SOA, Qingdao 266061, China. wang-baodong@263.net |
| |
| Abstract: | Based on field observations during 1997 to 1999, the distributions of micronutrients and their limitation on the growth of phytoplankton in the Yellow Sea and the East China Sea were discussed in this paper. The results showed that there were abundant nutrients in the area of the east and northern-east of the Changjiang River estuary, and the nutrients came from the extension of the Changjiang River diluted water and the transportation of the Subei Coastal water. Besides, the maximum extension range of the nutrients in the Changjiang River diluted water was observed during the catastrophic flooding period of the Changjiang River in the summer of 1998. Based on the Redfield ratio (Si:N:P = 16:16:1) in which, three essential nutrients were utilized by marine phytoplankton, the Si/N/P ratios were calculated and studied for the upper water of the Yellow Sea and the East China Sea. The results indicated that Si/N ratios were very high, which suggested that silicate was not the limiting factor for the growth of phytoplankton in the Yellow Sea and the East China Sea. However, under the influence of terrestrial runoff, especially the Changjiang River runoff which was rich in combined nitrogen and had very high N/P ratios, high N/P ratios occurred in the Changjiang River estuary and its adjacent areas such as the south and southwest of the Yellow Sea, the inshore area of the East China Sea and the area east of the Changjiang River estuary in spring and summer. As a result, in contrast to general open marine systems, the systems in these areas resembled estuarine ones rather than typical marine ones. The primary production in a considerable portion of the Yellow Sea and the East China Sea might be limited by phosphate rather than nitrogen. |
| |
| Keywords: | Nutrient Nutrient limitation Yellow Sea East China Sea Changjiang River estuary |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《应用生态学报》浏览原始摘要信息 |
|
点击此处可从《应用生态学报》下载全文 |
|
