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| 长江三峡工程对长江口外流场的影响 |
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乐肯堂
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中国科学院海洋研究所
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| 摘要: |
| 长江三峡枢纽工程是综合开发利用长江水利资源的一项举世瞩目的大工程，建成后将对我国社会主义建设带来巨大的经济效益。但是，也必须考虑到它对长江下游流域以至河口及其邻近海域的生态环境带来的影响。因此，必须在工程建设之前进行深入研究。
根据“三峡工程对长江河口区生态与环境的影响和对策”这一课题的要求，本文就三峡工程对长江口区流场的影响作一初步分析。 |
| 关键词: 长江三峡工程、长江口外流场 |
| 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2055号 |
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| IMPACTS OF THE THREE GORGES PROJECT ON THE CURRENT FIELD OFF THE CHANGJIANG RIVER MOUTH |
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Le Kentang
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Institute of Oceanology, Academia Sinica
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| Abstract: |
| Based on the historical runoff data of the Changjiang River and the current data from anchor stations within the Changjiang Estuary and its adjacent area since 1950s, some predictive models are established to predict discharges of the Changjiang River at Station Datong from the regulated discharges of the Changjiang River at Station Yichang according to the Three Gorges Project, and on the basis of which impacts of the Three Gorges Project on tida1 currents and residual currents off the Changjiang River mouth are also analyzed. The results show that after the discharge at Station Yichang is regulated, the discharge at Station Datong will be markedly changed and the changed discharge could reach as much as 50 per cent or more in certain months of certain years, which will have a significant influence on the ecosystem. And a secular trend of the discharge reduction at Station Datong will have even greater influence on the ecosystem. |
| Key words: THREE GORGES PROJECT, CURRENT FIELD OFF THE CHANGJIANG RIVER MOUTH |
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