三峡库区次级河流污染现状与对策研究

Study on the Present Situation and Countermeasures of Tributaries in Three Gorges Reservoir Area

三峡库区水环境的好坏直接影响三峡工程效益的发挥,于是该文综述了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方面发挥的重要生态功能。通过分析三峡库区次级河流的生态环境问题,重点分析了水体出现富营养化的几个重要方面,即营养盐和有机物污染、重金属污染和藻类的爆发等。针对这些现状,预测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。因此,沉水植物金鱼藻和黑藻不仅对三峡库区水环境贡献很大,而且在水体中可以发挥了强大的环境生态功能,在治理三峡库区次级河流水体污染具有广阔前景。

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 Cercaophyllum 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 Hydrilla verticiUata 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, CeratophyUum demersum and Hydrilla verticillata Royle not only make a signifi- cant 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.