三峡库区次级河流污染现状与对策研究

沉水植物金鱼藻和黑藻在治理三峡库区次级河流水体污染具有广阔前景，对保护三峡水库的水环境贡献很大，在库区水体中可以发挥强大的环境生态功能。本文通过分析三峡库区次级河流的环境问题，预测了金鱼藻和黑藻在库区的应用前景，即防止水体富营养化、有机物污染、重金属污染、抑制藻类生长，以及维持生物多样性、生态完整性和稳定性。

Study on the Present Situation and Countermeasures of Tributaries

It is well known that the water quality of the Three Gorges reservoir area will have a direct impact on the efficiency of the Three Gorges Project. This paper mainly reviews the ecological functions of Ceratophyllum demersum and Hydrilla verticillata Royle, they have played the important role of in controlling water pollution at tributaries in Three Gorges Reservoir Region. The author analyzed ecological and environmental problems and emphasized on analyzing a few factors of eutrophication in water in the area,namely nutrient salt and organic matter pollution, heavy metal pollution and the overrunning of algae and so on. Aiming at those situations, an attempt is made to predict the applied prospects of Ceratophyllum demersum and Hy- drilla verticillata Royle in this area, in other words, they may prevent eutrophication in water, heavy metal pollution, organic matter pollution, restrain the growth of algae, and maintain biological diversity, ecological integrity and stability. So, Ceratophyllum demersum and Hydrilla verticillata Royle not only make a significant contribution to protect water environment, but also may play a powerful environmental and ecological functions in water, they have wide applied prospects in protection of water pollution in the Three Gorges Reservoir Region.