Geoderma,
Год журнала:
2024,
Номер
442, С. 116782 - 116782
Опубликована: Янв. 20, 2024
Soil
hydraulic
parameters
are
influenced
by
various
inherent
soil
properties,
such
as
pore
structure
and
organic
matter
content,
which
can
vary
with
changes
in
the
ecosystem.
However,
identifying
temporal
variations
of
a
co-evolving
soil-vegetation
system
remains
challenge.
This
study
focused
on
tropical
forest
significant
seasonal
vegetation
attributes,
evaporation,
carbon
fluxes
over
five-year
monitoring
period.
The
particle
batch
smoother
algorithm
was
integrated
an
unsaturated
flow
model
to
identify
seasonally
varied
through
assimilation
in-situ
measured
moisture.
As
benchmark,
Generalized
Likelihood
Uncertainty
Estimation
method
applied
optimize
without
considering
variation.
results
indicated
that
temporally
varying
exhibited
regular
patterns
outperformed
unvaried
terms
reducing
errors
modeling
moisture
evaporation.
Moreover,
were
closely
linked
litterfall
terrestrial
time.
Specifically,
due
hysteresis
transformation
from
matter,
accumulated
Hot-dry
season
replenish
resulting
increase
field
capacity
saturated
conductivity
Hot-rainy
season.
intense
decomposition
under
high
temperature
led
decrease
conductivity.
emphasizes
value
detecting
within
coevolving
system,
thereby
contributing
more
comprehensive
understanding
intricate
dynamics
ecohydrological
changing
environment.
Archives of Computational Methods in Engineering,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 29, 2024
Abstract
Numerous
studies
have
investigated
the
coupled
multi-field
processes
in
frozen
soils,
focusing
on
variation
soils
and
addressing
influences
of
climate
change,
hydrological
processes,
ecosystems
cold
regions.
The
investigation
multi-physics
field
has
emerged
as
a
prominent
research
area,
leading
to
significant
advancements
coupling
models
simulation
solvers.
However,
substantial
differences
remain
among
various
due
insufficient
observations
in-depth
understanding
processes.
Therefore,
this
study
comprehensively
reviews
latest
process
numerical
methods,
including
thermo-hydraulic
(TH)
coupling,
thermo-mechanical
(TM)
hydro-mechanical
(HM)
thermo–hydro-mechanical
(THM)
thermo–hydro-chemical
(THC)
thermo–hydro-mechanical–chemical
(THMC)
coupling.
Furthermore,
primary
methods
are
summarised,
continuum
mechanics
method,
discrete
or
discontinuous
simulators
specifically
designed
for
heat
mass
transfer
modelling.
Finally,
outlines
critical
findings
proposes
future
directions
multi-physical
modelling
soils.
This
provides
theoretical
basis
mechanism
analyses
practical
engineering
applications,
contributing
advancement
management
Water,
Год журнала:
2023,
Номер
15(14), С. 2587 - 2587
Опубликована: Июль 16, 2023
Research
on
the
variation
in
soil
water,
heat,
and
salt
unsaturated
zones
during
freeze–thaw
process
has
great
significance
efficiently
utilizing
water
resources
preventing
salinization.
The
field
experiment
was
carried
out
with
lysimeter
as
test
equipment
to
analyze
characteristics
of
process,
profile
content,
main
ion
content
three
textured
soils
groundwater
table
depth
0.5
m.
results
showed
that
temperature
gradient
freezing
were
greater
average
particle
size
increased.
increment
at
0
30
cm
sandy
loam
loamy
sand
decreased
by
40.20~93.10%
28.14~65.52%
compared
soil,
increased
period.
Ca2+,
Na+,
Cl−,
SO42−
4.37~45.50%
22.60~70.42%
end
period,
correlation
between
increase
size.
research
can
provide
a
theoretical
basis
for
salinization
prevention
crop
production
shallow
areas.
