Journal of Cold Regions Engineering,
Journal Year:
2024,
Volume and Issue:
38(3)
Published: May 29, 2024
The
warming
trend
presents
a
significant
threat
to
the
underlying
permafrost.
Talik
formation
is
widely
recognized
as
mechanism
of
permafrost
degradation.
Our
research
indicates
that
term
talik
has
undergone
long
period
development
and
gradually
formed,
referring
unfrozen
layers
in
already
resulted
extensive
damage
infrastructure
built
areas.
Here,
we
provide
brief
overview
current
status
talik.
Accurately
identifying
challenge.
However,
by
integrating
multiple
identification
tools
with
technology,
precision
detection
can
be
enhanced,
resulting
more
accurate
results.
This
paper
discusses
strengths
weaknesses
each
approach.
While
numerical
simulations
enhance
our
understanding
evolution
process
taliks,
most
focus
on
taliks
beneath
lakes.
These
emphasize
impact
subpermafrost
groundwater
flow
lake
surrounding
thickness.
Today,
there
scarcity
relevant
studies
about
cold
zone
engineering.
presence
exacerbates
occurrence
permafrost-related
subgrade
diseases,
which
are
chronic
irreversible.
Additionally,
it
poses
stability
subgrades
worsens
settlement
issues.
Therefore,
have
analyzed
causes
distribution
characteristics
proposed
novel
measure
for
preventing
controlling
it.
aims
long-term
service
performance
regions.
modified
polyurethane
material
injected
into
through
grouting
technology
replacement.
low
thermal
conductivity,
strong
water
resistance,
certain
strength.
It
effectively
improves
hydrothermal
environment
conditions
necessary
formation,
new
or
impeding
their
development.
As
result,
enhanced.
Geoderma,
Journal Year:
2024,
Volume and Issue:
446, P. 116898 - 116898
Published: April 27, 2024
Permafrost
degradation
on
the
Tibetan
Plateau
(TP)
is
anticipated
to
result
in
thaw
of
permafrost
carbon.
Existing
studies
have
been
conducted
assess
future
frozen
carbon
TP,
primarily
focusing
deepening
active
layer
while
neglecting
impact
area
shrinkage.
This
oversight
may
lead
a
significant
underestimation
potential
Our
research
underscores
pivotal
role
shrinkage
estimating
findings
reveal
that
when
combined
effects
and
are
considered,
rates
various
radiative
forcing
scenarios
nearly
four
times
those
based
alone.
Notably,
our
results
demonstrate
substantial
organic
TP
under
all
scenarios:
In
low
scenario
SSP1-2.6,
it
predicted
55.4
%
0–10
m
soils
will
be
state
by
2100,
more
than
90
high
SSP5-8.5.
poised
diminish
TP's
current
sink
function
significantly.
study
emphasizes
as
global
warming
persists,
areas
play
cycle
processes
future.
Furthermore,
we
stress
importance
considering
understanding
carbon,
providing
valuable
insights
for
balance
TP.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Feb. 26, 2025
Abstract
Thermokarst
lakes
as
hot
spots
of
methane
(CH
4
)
release
are
crucial
for
predicting
permafrost
carbon
feedback
to
global
warming.
These
suffering
from
serious
drainage
events,
however,
the
impacts
lake
on
CH
remain
unclear.
Here,
synthesizing
field
drilling,
incubation
experiments,
and
composition
microbial
communities,
we
reveal
temperature
sensitivities
(Q
10
drivers
drainage-affected
Qinghai-Tibet
Plateau.
We
find
that
cumulative
decreases
with
depth,
where
0–30
cm-depth
sediment
accounts
97%
whole
release.
The
Q
surface
is
2
times
higher
than
deep
layers,
but
roughly
56%
lower
non-drainage
lakes.
response
warming
mainly
driven
by
communities
(49.3%)
substrate
availability
(30.3%).
Our
study
implies
mitigates
thermokarst
sheds
light
processes
understanding
projections.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: March 11, 2025
Abstract
Thermokarst
lakes,
serving
as
significant
sources
of
methane
(CH
4
),
play
a
crucial
role
in
affecting
the
feedback
permafrost
carbon
cycle
to
global
warming.
However,
accurately
assessing
CH
emissions
from
these
lakes
remains
challenging
due
limited
observations
during
lake
ice
melting
periods.
In
this
study,
by
integrating
field
surveys
with
machine
learning
modeling,
we
offer
comprehensive
assessment
present
and
future
thermokarst
on
Tibetan
Plateau.
Our
results
reveal
that
previously
underestimated
release
bubble
water
storage
periods
is
11.2
±
1.6
Gg
C
,
accounting
for
17
4%
annual
total
lakes.
Despite
cover
only
0.2%
area,
they
annually
emit
65.5
10.0
which
offsets
6.4%
net
sink
alpine
grasslands
plateau.
Considering
loss
ice,
expansion
projected
lead
1.1–1.2
folds
increase
2100.
study
allows
foreseeing
rapid
expanding
sheds
new
lights
processes
controlling
carbon-climate
ecosystems.
