There are reasons why amounts of rain effect whether soil is grassland soil or forest soil. Forest soils get so much rain that it helps support the heavy tree growth and keep the trees living and healthy. But when there is grassland that means that there is rain just not enough to up hold trees, because they do absorb large amounts of it. So when you see a area where there is a extensive amounts of rain fall you can almost bet that it is a forest soil and not a grassland soil. The names explain themselves because it rains enough to keep the grass healthy and nourished. Forest soils explains in the name that there are trees there so it must rain enough to keep them living.
