分布型モデルを用いた河川・地下水の水質解析

抄録

The purpose of this research is to develop a distributed model for water and material cycle and apply the model to a watershed of agricultural land use area from the viewpoint of the catchment management that aims to improve river and ground water quality.

After applying the developed model with specified item of nitrogen to the case study of Lake Ushiku-numa watershed, we successfully reconstructed spatial distribution of dissolved inorganic nitrogen in unconfined ground water and trend of fluctuation of dissolved inorganic nitrogen in river water.

The model will be a useful tool for the planning of the measures to recover river and groundwater quality once we upgrade its performance by improving its generality and accuracy and making it applicable with other water quality items.