The classification of the soils has the objective to organize knowledge about soils; understand relationships among different soils and establish groups or classes for practical purposes. They are classified according to your productivity, humidity, texture, color. The 12 Orders is shown below:

The soils are not just classified in Orders, but also in Suborders, Great Groups, Subgroups, Family and Series, as the animals or plants taxonomy are made. The more you go though the classifications more you specified the soil is.