摘要：The soil erosion map in hand is integrated in an interdisciplinary
work with zoology and botany which deals
with the problems of an Ethiopian National Park in
the High Semien Mountains. Wide areas of the high
plains between 3,200 and 4,000 metres above sea level
formed by Trapp-Basalt are damaged by soil erosion.
In order to take effective measures against the irreversible damage in this potential disaster area, the
present Situation was mapped in a primary phase in the
autumnof 1974:
<br><br>
1) The present forms of erosion were mapped.<br>
2) Based on numerous profües, the structure of the
soil was investigated and typified in an ideal profile.
The thickness of the upper black horizon was measured
by 500 different samples, evaluated and presented
areawise.<br>
3) On arable areas differentiation between 4 classes of
damage was made: heavily to negligibly damaged
areas.
<br><br>
The map established shows that soil erosion occurs
principally on ploughed land. Tendencies to damage
according to exposure, form and incline of the slope
are clearly shown. An evolution of the forms of soil
erosion can be derived. Possibilities for protective measures against soil erosion are available, but have not
been used until today.
