土砂動態と栄養塩循環を考慮した新たな植生消長モデルの開発

抄録

The authors have developed the vegetation model which considers soil nutrient cycle. In this study, at first, we improve the vegetation model by updating of the flush mechanism of trees and addition of the mechanism that the trees require TN from atmosphere. Then, we simulated the change of the vegetation by the soil nutrient cycle on a sandbar. As a result, we confirmed that the robinia decrease when the soil nutrient increase.

Therefore, we show that the vegetation model we have developed is able to estimate the vegetation change in the river or river forestation, and that we have possibility to control the vegetation in the river channel by the water quality management of the dam or the basin development.