Abstract.
Climate
warming
exacerbates
the
degradation
of
mountain
cryosphere,
including
glacier
retreat,
reduction
in
snow
cover
area,
and
permafrost
degradation.
These
changes
dramatically
alter
local
downstream
hydrological
regime,
posing
significant
threats
to
basin-scale
water
resource
management
sustainable
development.
However,
there
is
still
a
lack
systematic
research
that
evaluates
variation
cryospheric
elements
mountainous
catchments
their
impacts
on
future
hydrology
resources.
In
this
study,
we
developed
an
integrated
cryospheric-hydrologic
model,
referred
as
FLEX-Cryo
model.
This
model
comprehensively
considers
glaciers,
cover,
frozen
soil,
dynamic
processes
Hulu
catchment
located
Upper
Heihe
river
China.
We
utilized
state-of-the-art
climate
change
projection
data
from
sixth
phase
Coupled
Model
Intercomparison
Project
(CMIP6)
simulate
cryosphere
hydrology.
Our
findings
showed
two
glaciers
will
completely
melt
out
around
years
2045–2051.
By
end
21st
century,
annual
maximum
equivalent
projected
decrease
by
41.4
%
46.0
%,
while
duration
be
reduced
approximately
45
70
days.
The
freeze
onset
seasonal
soil
expected
delayed
10
22
days,
thaw
likely
advance
19
32
Moreover,
depth
5.2
10.9
cm
per
decade,
active
layer
increase
8.2
15.5
decade.
Regarding
hydrology,
runoff
exhibits
decreasing
trend
until
complete
melt-out
resulting
total
15.6
18.1
%.
Subsequently,
shows
increasing
trend,
primarily
due
precipitation.
Permafrost
causes
low
early
thawing
season
decrease,
discontinuous
baseflow
recession
gradually
transitions
into
linear
recessions,
leading
baseflow.
results
highlight
future.
enhance
our
understanding
cold-region
have
potential
assist
addressing
challenges
posed
change.
Plants,
Год журнала:
2025,
Номер
14(2), С. 155 - 155
Опубликована: Янв. 7, 2025
Alpine
meadows
are
vital
ecosystems
on
the
Qinghai-Tibet
Plateau,
significantly
contributing
to
water
conservation
and
climate
regulation.
This
study
examines
energy
flux
patterns
their
driving
factors
in
alpine
of
Qilian
Mountains,
focusing
how
meteorological
variables
net
radiation
(Rn),
air
temperature,
vapor
pressure
deficit
(VPD),
wind
speed
(U),
soil
content
(SWC)
influence
sensible
heat
(H)
latent
(LE).
Using
Bowen
ratio
balance
method,
we
monitored
changes
during
growing
non-growing
seasons
from
2022
2023.
The
annual
average
daily
Rn
was
85.29
W
m-2,
with
H,
LE,
G
accounting
for
0.56,
0.71,
-0.32
Rn,
respectively.
Results
show
that
is
main
driver
both
H
highlighting
its
crucial
role
turbulent
variations.
Additionally,
a
negative
correlation
found
between
temperature
suggesting
high
temperatures
may
suppress
H.
A
significant
positive
observed
moisture
further
indicating
moist
conditions
enhance
LE.
In
conclusion,
this
demonstrates
impact
change
distribution
calls
research
ecosystem's
dynamic
responses
changing
conditions.
Frontiers in Microbiology,
Год журнала:
2025,
Номер
15
Опубликована: Янв. 6, 2025
The
makeup
of
soil
microbial
communities
may
serve
as
a
crucial
predictor
the
alpine
grassland
ecosystem.
Climate
change
and
human
disturbance
have
resulted
in
intensified
ecosystem
degradation,
such
rocky
desertification,
which
modify
structures
composition
microorganisms.
However,
little
is
known
about
effects
desertification
on
soil.
Here,
we
investigated
five
different
layers
Qinghai-Tibet
Plateau,
including
nil
rock
(NRD);
potential
(PRD);
light
(LRD);
moderate
(MRD);
severe
(SRD),
compared
bacterial
community
with
physiochemical
properties
conditions.
result
showed
that
significantly
altered
but
did
not
affect
abundance
diversity.
At
same
time
increased,
organic
carbon
(SOC),
total
nitrogen
(TN),
alkali
hydrolyzable
(AN),
available
phosphorus
(AP),
potassium
(AK)
decreased
significantly,
while
pH,
(TP);
(TK)
increased.
Redundancy
analysis
revealed
AK,
TP,
SOC
are
key
factors
influencing
communities.
Our
finding
provides
basic
information
scientific
reference
for
restoration
grasslands.
Ecological Indicators,
Год журнала:
2024,
Номер
163, С. 112098 - 112098
Опубликована: Май 4, 2024
Desertification
poses
a
serious
threat
to
ecosystem
health,
and
with
global
changes,
the
variability
uncertainty
of
ecological
functions
in
semi-arid
alpine
regions
are
increasing.
A
pressing
issue
is
quantifying
how
desertification
affects
soil
system
these
areas.
However,
empirical
evidence
still
lacking
exploring
interaction
between
degradation
gradients
under
natural
conditions
by
coupling
physicochemical
properties,
microbiota,
vegetation.
For
this
purpose,
we
conducted
survey
sampling
vegetation
at
five
sites
no,
light,
moderate,
severe
extremely
Qinghai
Area
Qilian
Mountains
National
Park,
China.
We
introduced
new
concept
health
stability
(SHS)
represent
actual
status
systems
assessed
impact
on
stability.
observed
that
intensification
has
led
significant
decrease
organic
matter,
relative
abundance
microorganisms,
plant
factors.
The
contributions
factors
microbiota
SHS
showed
negative
correlation
gradient.
varied
across
different
gradients,
rather
than
following
single
linear
relationship,
relatively
rapid
decline
transition
from
non-desertification
moderate
desertification.
Our
work
emphasizes
coupled
SHS.
It
calls
for
intensified
prevention
treatment
mild
desertification,
while
providing
methods
deeper
scientific
understanding
accurately
evaluating
regions.
AbstractsLarge-scale
ecological
restoration
is
not
realistic,
we
can
guide
regional
through
the
construction
and
optimization
of
networks
(EN),
which
in
turn
promotes
enhancement
ecosystem
health.
However,
methods
perspectives
existing
studies
on
EN
are
relatively
homogeneous,
to
some
extent
restricts
our
ability
improve
health
ecosystems.
In
research,
attempted
establish
an
pathway
(referred
as
CSC
model)
with
objectives
promoting
connectivity
(C),
stability
(S)
continuity
(C)
between
regions
into
ecosystems
ENs,
identification
priority
zones,
topology,
analysis
balance
supply
demand
services
(ESs),
empirically
demonstrated
it
Jiuquan
City,
China.
The
results
show
that:
(1)
Barrier
points
pinch
main
contributors
reduced
EN,
focusing
them
repair
areas
(especially
for
where
two
overlap)
local
EN.
(2)Both
Add
edges
Node
degrees
(AND)
Betweenness
(ANB)
strategies
enhance
ENs.
ANB
strategy
exhibits
highest
overall
serves
best
solution
improving
(3)Areas
ESs
low
high
overlap
ENs
pressure
potentially
degradation
anthropogenic
impacts,
prone
damage
sources
or
breaks
corridors,
thus
affecting
sustainable
development
should
be
taken
a
area
future
protection.(4)The
optimized
edge
attack
experiment's
elemental
connectivity,
persistence
ecosystems,
conducive
enhancing
region.
This
research
provide
new
perspective
promotion
management
22
