It is the active factors in soil formation that vary so as to constitute an environmental change or shock.

Human activity is now firmly established as the sixth factor of soil formation.

The area exhibits variety of geological rock and soil formations.

In his last book, he returned to the effect earthworms have on soil formation.

Profile development is minimal as a consequence of young age and/or slow soil formation.

The soil formation of the ridge was of crucial importance.

A sharp distinction was drawn between rock weathering and soil formation.

Some soils include layers that are not affected by soil formation.

The fact that soil formation is simply not occurring makes ecologically sustainable management even more difficult.

It has a common cause in soil formation.