| 摘要: |
| 在长江口海区,长江冲淡水、台湾暖流、黄海冷水等多种水系混合、交汇,错综复杂。对河口营养盐分布变化规律的研究,将为河口环境和生态变化提供可靠的依据,营养盐作为长江口这一世界著名渔场的化学物质基础具有重要意义。本文通过对长江口及其附近海域的周年观察,讨论了各种营养盐(包括磷、硅和氮)的时空变化规律和它们在河口的转移过程,估算了营养盐的年输出量,并提出了长江流量和营养盐输出量之间的关系,初步预报了三峡工程对长江口营养盐可能产生的影响。 |
| 关键词: 长江口区、营养盐、三峡工程 |
| DOI： |
| 分类号: |
| 基金项目:中国科学院海洋研究所调查研究报告第2058号 |
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| DISTRIBUTION CHARACTERS OF THE NUTRIENTS IN THE CHANGJIANG RIVER ESTUARY AND THE EFFECT OF THE THREE GORGES PROJECT ON IT |
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Shen Zhiliang, Lu Jiaping, Liu Xingjun, Diao Huanxiang
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Institute of Oceanology, Academia Sinica
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| Abstract: |
| Based on the investigations of the nutrients in the Changjiang River Estuary and its adjacent waters during Aug. 1985 to Jul. 1986, the spatial-temporal distributions and changes of the nutrients (P, Si and N )and their removal processes in the estuary and the relationship among the nutrients, the flow of the Changjiang River and phytoplankton are discussed. The relation equations between the transports of the nutrients from Changjiang River water into sea and the flow of the Changjiang River are presented. The annual transports of the PO4-P, SiO3-Si, and total inorganic N from Changjiang River water into the sea are estimated to be 1.4×104, 204.4×104 and 88.8×104 tons respectively. The effects of the Three Gorge Project on the distributions and changes of the nutrients in the Changjiang River Estuary and its adjacent waters are forecasted. |
| Key words: CHANGJIANG RIVER ESTUARY, NUTRIENTS,THREE GORGES PROJECT |
