Pedogenesis is the major topic of the science of pedology , whose other aspects include the soil morphology , classification ( taxonomy ) of soils , and their distribution in nature , present and past ( soil geography and paleopedology ) . It is the major topic of the science of pedology , whose other aspects include the soil morphology , classification ( taxonomy ) of soils , and their distribution in nature , present and past ( soil geography and paleopedology ) .