ダム流入河川水質調査結果からみた大気由来窒素の影響について

抄録

Using water quality data of dam reservoirs and their inflow rivers in the whole country, we compared the T-N and T-P concentration of them. The results show that the T-N level of some dam reservoirs, which seem to have few contaminations by human and livestock, is high and nitrate concentration in their inflow rivers is also high. This result suggests that some dam reservoirs undergo influence of atmospheric nitrogen deposition.