Forest plantations influence on the thermophysical properties of southern chernozems
Visnyk of V N Karazin Kharkiv National University series Ecology,
Journal Year:
2024,
Volume and Issue:
30, P. 26 - 35
Published: July 24, 2024
Purpose.
Evaluation
of
the
influence
Robinia
pseudoacacia
L.
and
Quercus
robur
forest
plantations
on
thermal
diffusivity,
specific
heat
conductivity
southern
chernozems.
Methods.
The
thermophysical
properties
soils
were
determined
by
method
pulse
heating
using
a
specially
developed
installation
software.
Soil
temperature
in
field
was
soil
surface
at
depths
sensors.
Air
measured
with
digital
anemometer-thermometer-hygrometer
Starmeter
(ST8021).
Results.
performed
samples
taken
from
zonal
chernozems
(used
as
control),
under
R.
Q.
near
city
Zelenodolsk
(Kryvorizky
district,
Dnipropetrovsk
region).
It
established
that
growth
led
to
decrease
temperature,
depth
50
cm,
average
0–50
cm
layer
compared
chernozem
is
characterized
sharper
changes
plantations.
plantation
an
increase
values
its
upper
horizons
chernozem.
planting
heat,
practically
did
not
lead
conductivity.
Conclusions.
leads
more
pronounced
change
plantation,
especially
studied
Language: Английский
Influence of soil salinity on the bearing capacity of the frozen wall
Frattura ed Integrità Strutturale,
Journal Year:
2024,
Volume and Issue:
18(69), P. 106 - 114
Published: April 26, 2024
The
article
describes
the
results
of
laboratory
studies
on
unfrozen
water
content
and
ultimate
long-term
strength
frozen
clay
chalk
samples
in
temperature
range
from
−10
to
−25
°C.
soil
contained
dissolved
salt
pore
space,
with
three
types
salts
(NaCl,
KCl,
CaCl2)
being
considered.
findings
indicate
that
influence
type
soils
is
realized
indirectly
through
content.
In
this
case,
freezing
characteristic
curve
region
negative
temperatures
significantly
depends
both
its
quantity.
experimental
data
obtained
were
used
parameterize
model
calculate
maximum
bearing
capacity
wall
(FW)
presence
volume
soils.
It
has
been
demonstrated
decrease
FW
substantial
appearance
space
This
at-tributed
combined
effects
two
factors:
1)
a
reduction
thickness
2)
due
an
increase
amount
space.
second
factor
deemed
more
significant.
Language: Английский