Research On Eutrophication Assessment,Predication Of Lakes And Reservoirs

Eutrophication has become the most important problem of lakes and reservoirs in our country. Lake and reservoir have the same eutrophication mechanism, so it is feasible to research the two water areas together. But the occurrence of eutrophication bears some factors, different water area has different decisive one, which requires research combined with the actual condition of water body and embodies pertinence. Bosten is a typical big shallow lake in west inland altiplano in china and NuoZhaDu is the typical river-type reservoir. They are the representations of west inland lakes and west-south river-type reservoirs in China. According to the two water bodies, this paper has probed into the research on the eutrophication assessment, predication and management in these two type of water bodies.In this paper, hydrology and pollution level in Bosten Lake and NuoZhaDu Reservoir were firstly investigated. Distribution and development trend of pollution source were presented. Thereout, appropriate models for assessment and predication have been saked through the analysis of eutrophication influence factors in these two water bodies. After the eutrophication assessment of the actual condition in these two water bodies, the feasibility of several typical assessment models have been validated and eutrophication level of every section in the two water bodies have also been given. On the basis of assessment .yearly distribution of TP and TN concentration and the whole water' s eutrophication level of Bosten lake before 2010 have beendiscussed. In addition, this paper have also predicated eutrophication level of every spot in this lake in different hydrology year of 2010 and theoretically analyzed the probability of eutrophication. All these research programs mentioned above were to provide foundation for eutrophication gross control and pollution prevention in key water field in Bosten Lake. Simulately, to provide theory guidance for pollution prevention and cure in key section and key time during the building process of NuoZhaDu reservoir, month-by-month distribution of eutrophication and the eutrophication probability along the reservoir and in every river section have also predicted after the construct of NuoZhaDu. According to the result of assessment and predication in these two water bodies, combined with the practical experience of eutrophication prevention in home and out waters, this paper have discussed some measures for eutrophication prevention and cure for similar lakes and reservoirs and also brought forward some measures for Bosten Lake and NuoZhaDu Reservoir.