白丸調整池ダムのSS流出負荷量の変動と濁度の底生動物への影響

概要

論文の詳細を見る
It is an important subject to manage sedimentation of dams appropriately so that the continuity of rivers may be maintained and the influence of the ecosystem on the downstream site may be made to reduce in late years. And it is necessary to examine measures of turbid water. In this study, changes of a pollutant load which sediment affects are cleared quantitatively on Shiroma Dam. Relation between turbidity and the diversity of benthic animals are clarified using a stochastic method. The correlating equation of between turbidity and SS was obtained reliably by calculation of a pollutant load. And an annual discharge-duration curve on the turbidity has been created. A significant relationis accepted, that is between the non-exceeding probability of 355-day turbidity and the Simpson index using stochastic methods of turbidity and benthic animals. This relation is suiting a convex quadratic curve and having the maximum of diversity. Therefore, it became clear that the suitable non-exceeding probability, namely, moderate disturbance frequency exists.
前橋工科大学の論文
2007-03-30