| Buoyancy leads to high productivity of the Changjiang diluted water: a note |
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| 作者姓名： | CHEN Chen-Tung Arthur |
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| 作者单位： | Institute of Marine Geology and Chemistry,National Sun Yat-sen University,Kaohsiung 80424,China;State Key Laboratory of Marine Environmental Science,Xiamen University,Xiamen 361005,China |
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| 摘 要： | Being the mightiest river emptying into the East China Sea （ECS） and the Pacific Ocean, compounded with the large increase of nitrogen and phosphorus input due to anthropogenic activities, the Changjiang River （Yangtze River） has become a dominating source of these nutrients to the estuary. The high nutrient concentrations notwithstanding, however, outside of the estuary the high biological productivity of the Changjiang diluted water （CDW） are most probably fueled mainly by nutrient-rich subsurface waters originating from the upwelled Kuroshio waters. This is because while the buoyancy of the CDW spreads it out on the ECS continen- tal shelf, the CDW entrains subsurface waters along with the nutrients. Nutrients thus supplied are several times more than those supplied by the Changjiang River.
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| 关 键 词： | 长江冲淡水 浮力 高效率 生物生产力 东中国海 人为活动 营养浓度 营养丰富 |
| 收稿时间： | 7/9/2008 12:00:00 AM |
| 修稿时间： | 2008/8/20 0:00:00 |
Buoyancy leads to high productivity of the Changjiang diluted water: a note |
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| CHEN Chen-Tung Arthur.Buoyancy leads to high productivity of the Changjiang diluted water: a note[J].Acta Oceanologica Sinica,2008,27(6):133-140. |
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| Authors: | CHEN Chen-Tung Arthur |
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| Institution: | Institute of Marine Geology and Chemistry, National Sun Yat-sen University, Kaohsiung 80424, China;State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China |
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| Abstract: | Being the mightiest river emptying into the East China Sea (ECS) and the Pacific Ocean,compounded with the large increase of nitrogen and phosphorus input due to anthropogenic activities,the Changjiang River (Yangtze River) has become a dominating source of these nutrients to the estuary.The high nutrient concentrations notwithstanding,however,outside of the estuary the high biological productivity of the Changjiang diluted water (CDW) are most probably fueled mainly by nutrient-rich subsurface waters originating from the upwelled Kuroshio waters.This is because while the buoyancy of the CDW spreads it out on the ECS continen-tal shelf,the CDW entrains subsurface waters along with the nutrients.Nutrients thus supplied are several times more than those supplied by the Changjiang River. |
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| Keywords: | Changjiang River Changjiang diluted water nutrients Three Gorges Dam productivity buoyancy |
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