学位专题

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  • Abstract
    1 Introduction
    1.1 Definition and causes of formation of eutrophication
    1.2 Effects of eutrophication on marine ecosystems
    1.3 Research status of eutrophication in estuarine and coastal waters
    1.4 Research status of eutrophication assessment in estuarine and coastal waters
    1.5 Status of eutrophication research and assessment in the Changjiang estuary and adjacent coastal waters
    1.6 The train of thought of this dissertation
    2 Nutrient conditions in the Changjiang estuary and adjacent coastal waters
    2.1 Distribution and variation of nutrients in the Changjiang estuary and adjacent coastal waters
    2.2 Nutrient limitation of phytoplankton growth in the Changjiang estuary and adjacent coastal waters
    3 Coastal upwelling and its contribution of nutrients to the euphotic zone in the Changjiang estuary and adjacent coastal waters
    3.1 Seasonal variation of coastal upwelling and its nutrient flux in the Changjiang estuary and adjacent coastal waters
    3.2 Will the Three Gorges Dam reduce the upwelling and thus productivity in the East China Sea?
    4 Evolvement of eutrophication status and its ecological effects in the Changjiang estuary and adjacent coastal waters
    5 Assessment of trophic status in the Changjiang estuary and adjacent coastal waters
    5.1 Modification of ASSETS
    5.2 Application of ASSETS to the assessment of trophic status in the Changjiang estuary and adjacent coastal waters
    6 Conclusions
    References
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Eutrophication Status and Its Ecological Effects in the Changjiang Estuary and Adjacent Coastal Waters

Wang Baodong
中国海洋大学
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Estuarine and coastal eutrophication has been one of the primary environmental problems worrying the coastal countries; it is also the hotspot of marine ecological and environmental research. In this dissertation, the Changjiang estuary and its adjacent coastal waters was chosen as the research object. Based on the data of field surveys during the period of 1997 to 1999 and 2002 to 2003, nutrient distributions, transportation and their limitation for phytoplankton growth in the Changjiang estuary and its adjacent coastal waters were studied; the contribution of the upwelled nutrients to the euphotic zone through coastal upwelling in the East China Sea was also discussed. Moreover, the evolvement process of eutrophication status and its long-term ecological effects were discussed in the Changjiang estuary and its adjacent coastal waters by use of long-term series data. Finally, the ASSETS method, which is the representative approach of the "Phase II" models for the assessment of estuarine and coastal eutrophication status, was modified and applied to the assessment of eutrophication status in the Changjiang estuary and its adjacent coastal waters.

富营养化;长江河口;沿海水域;生态效应;海岸上涌

中国海洋大学

博士

Marine Chemistry

Wang Xiulin

2006

中文

X145

134

2014-05-22（万方平台首次上网日期，不代表论文的发表时间）