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초록· 키워드
Most important factors caused eutrophication and red tide were nutrients as nitrogen and phosphorus, and these stem from excretion of culture organism and terrestrial sources and nutrient release from sediment. Therefore, to improve water quality, reduction of these factors should be indispensable. In this study, both three-dimensional numerical hydrodynamic model and a eutrophication model, which were developed by Institute for Resources and Environment of Japan, were applied to analyze the processes affecting the phytoplankton production and also to evaluate the effects of water quality improvement plan on the phytoplankton production. The pollution load from each pollution source was reduced by the hierarchical rate of 40~100 % to assess the water quality on the simulation model of phytoplankton. In Masan bay, concentration of phytoplankton was reduced by 50 % when the 80 % reduction of the input loads from urban areas was conducted, and reduced to below eutrophication criteria when the 100 % reduction was conducted. But pollution load from sediment and agricultural land was of little importance to phytoplankton production. For environmental management of coastal areas, in case of Masan Bay, most important pollution load that causes eutrophication phenomenon was input load from urban areas. It needed 98 % load abatement to meet eutrophication criteria which is below 300 mg C/m³. Therefore, in order to control red tides and to conserve the coastal environment, it is effective to reduce the pollution load from urban areas by construction of treatment plant of sewage.
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참고문헌
참고문헌 신청최근 본 자료
UCI(KEPA) : I410-ECN-0101-2017-539-001534997
