| Seasonal variation of streamwater quality was observed every months from May 1997 to April 1998. Beside, temporal variation of streamwater quality and discharge were examined during rainfall-runoff period. Based on these data, we evaluated annual loading of pollutants discharged from forest basin. Main results obtained in this paper are as follows: Annual average pH was 7.31 and percentage of saturated DO concentration was represented 89∼96% in each site. Streamwater quality was determined by amounts of rainfall, soil profile of sites and recharging underground water in rainy days. However, Streamwater quality was determined by only recharging underground water in sunny days. Annual runoff loading was investigated that Ca^(2+) is 23.8ton/yr, Na^+ is 7.0ton/yr, K^+ is 2.4 ton/yr, Cl^- is 1.9ton/yr, NO₃-N is 1.6ton/yr, Mg^(2+) is 1.7ton/yr and SO₄^(2-) is 2.6ton/yr. In rainy days, runoff loading was contributed to annual loading about 20%. |
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