순천만 유입 수계의 수질 조사 = Survey on Water Quality of the Branch Streams of Sunchon Bay

다국어 초록 (Multilingual Abstract)

Monthly survey on water quality of the branch streams of Sunchon Bay was carried out for the last 1 year (1998 to 1999) as a part of long term projects to conserve Sunchon Bay - a very important wetland supporting a well developed framework of biodiversity including several bird species threatened with extinction. Three points of Dongchon, main stram of Sunchon Bay, and five points of the branch streams - Seochon, Hyanglimchon, Okchon and Isachon were selected for the survey. The results of the water quality measurement are the followings;
1) According to the standard of river water quality amended by Korean ministry of Environment, the water quality of the branch streams of Sunchon Bay corresponded to the Second Level which is suitable for river water.
2) Monthly changes of the water quality were not variable, except that of September, 1998 during the survey.
3) Total nitrogen and phosphorus contents responsible for eutrophication were relatively lower than those measured in several rivers in Korea. However, careful regulation of nitrogen and phosphorus contents at the upper parts of Dongchon stream seems to be needed.
4) Isacnon, the largest branch stream of Sunchon Bay, was found to be less polluted and played a very important role in improving water quality by a dilution effect before the polluted and played a very important role in improving water quality by a dilution effect before the polluted water of Dongchon stream reaches Sunchon Bay. It was more likely that the water quality of Sunchon Bay was dependant on area source of pollutants emitted by agriculture and livestock farming rather than industrial effluents or residential wastewater.