摘要：Our investigations on soils of the northeastern part of Switzerland lead to the foUowing conclusions:
1) Quaternary soils of different age can generally be separated by using the pH-values of the B-honzon. The validity of
this method is restricted to topographic positions where
there have been neither accumulation- nor erosion-processes.
2) There seem to be more textural inhomogeneities of the
parent-material than previously supposed. Thus, soil development is often misinterpreted.
3) Special attention must be drawn to soil erosion on gravelly
matenal. Otherwise, agricultural use of these soils can
lead to irreparable damage within a Short time because
the weathering rate in gravels is low. In contrast, soil erosion in forested areas may lead to a slight amelioration as
these soils are strongly acid and thus have a very low
base-saturation.
