4. to increase the richness of the forests by water in upstream reservoirs, underground water levels upstream forestry area constant moisture of natural forest resources.
4. To increase the fertility of forests upstream. The amount of water in the reservoir can raise the groundwater forests upstream. Constant hydration of natural forest resources.
4. To increase the fertility of Forest Watershed The volume of water in the reservoir can raise the groundwater forest watershed area Constant moisture of forest resource in nature.