Preheat oven to 400°. Place salmon in a foil-lined 15x10x1-in. pan; brush with 1/4 cup dressing. Bake until fish just begins to flake easily with a fork, 8-10 minutes. Meanwhile, toss rice with cilantro and salt.
To serve, divide rice mixture among 4 bowls. Top with salmon, carrot and, if desired, cabbage. Drizzle with remaining dressing.