2008 Volume 52 Pages 655-660
The management of the vegetation in the Oono and Ototsu River were examined using extended quasi 2D simulations. Firstly, the relation between the boundary mixing coefficients f and vegetation density in the Oono River is examined through comparison of numerical results between quasi 2D and 2D simulations. From the relation, a value of f is found to be 0.11 in the Oono River. And the effects of deforestation to the boundary mixing coefficient f were also examined. It showed that deforestation is not effected significantly on the value of f in the Oono River. Finally, management map of the vegetation in the Oono and Ototsu River was made using extended quasi 2D analysis.