English to Arabic Science Law (general) Soil

Soils under pine trees planted in a former pine grove are compared to oak tress planted at the same time, after 40 years of growth.

The clay content of the oak forest soils is significantly greater than that of the opine plantations.

This effect could be due th the formation of new clays (subject treated in Sect.

5.5) or the effect of earthworms or other fauna brining clays to the surface due to a change in nutritional advantage by the oak tree litter