Geoscience Reference
In-Depth Information
Fig. 7.8
Various shapes and
sizes of soil pores observed in
white
from a microscopic thin
section
Fig. 7.9
The real
confi guration of soil pores in
three dimensions (
gray
) while
the cut pores by a horizontal
plane are in
black
7.4
Carnival in Soil Pores
Soil pores are usually fi lled partly by water and partly by air. Waterlogged soils hav-
ing each and every pore fi lled entirely with only water are truly exceptional cases.
The composition of soil air differs from that of the air in the atmosphere. First of all,
with soil air having a very high water vapor content, its humidity is always close or
