English to Arabic Science Law (general) Soil

Thus erosion by water run off will be lowest in strongly vegetated areas, temperate forest or grasslands or tropical forest and humid savannas.
The relation is non-linear as indicated above, and related to annual precipitation (Langbein and Schumm, 1958).
The overall relations from low rainfall to high rainfall show a non-linear relation, reported by Xu
for soils based on loess in China.
Figure 3.8 indicates these relations in a general way.
In stages of low rainfall, the sparse plant cover is sufficient to maintain the soil in place.
There seems to be a sort of threshold, around 450 mm/year total rainfall where plants cannot maintain the soil in place with great efficiency.