Ecological Indicators,
Journal Year:
2023,
Volume and Issue:
157, P. 111313 - 111313
Published: Nov. 22, 2023
Soil
carbon
emissions
from
subalpine
ecosystems
have
been
demonstrated
to
be
influenced
by
freeze–thaw
cycles
(FTCs).
Under
climate
change,
moisture
and
number
of
FTCs
altered
significantly
in
regions.
Thus,
we
selected
a
typical
forest
Northwest
China
conducted
an
incubation
study
explore
the
effects
various
soil
(SM)
levels
numbers
on
CO2
CH4
fluxes
during
nine
FTCs.
Our
results
revealed
that
uptakes
had
significant
responses
changes
SM
(FCO2
=
2327.32,
p
<
0.001;
FCH4
353.51,
0.001)
2506.45,
60.85,
0.001).
Specifically,
thawing
phases
freezing
were
largest
first
FTC
then
gradually
decreased
stabilized
with
increase
Regarding
SM,
at
60
90
%
water-filled
pore
space
(WFPS)
same
higher
than
those
30
WFPS.
Moreover,
interactive
279.70,
17.76,
Especially
FTC,
dramatically
amplified
uptakes.
A
partial
least
squares
path
model
further
confirmed
negative
while
positive
In
addition,
explained
more
variation
modulated
primarily
substrate
accessibility
nutrient
availability,
for
uptakes,
microbial
properties
also
played
substantial
role
addition
availability.
We
conclude
increases
due
warming
humidification
may
trigger
potentially
Land,
Journal Year:
2023,
Volume and Issue:
12(7), P. 1293 - 1293
Published: June 26, 2023
Understanding
how
landscape
pattern
changes
impact
forest
biodiversity
conservation
and
ecosystem
management
is
crucial.
This
study
evaluated
the
maintenance
capacity
(BMC)
of
landscapes
in
Beijing,
China
from
2005
to
2020
based
on
habitat
quality
carbon
sink.
For
this,
moving
window
method
was
employed
compute
indices
that
depict
variations
patterns,
including
intermixing,
connectivity,
diversity,
compactness.
Lastly,
relationship
between
BMC
investigated
using
a
combination
spatial
correlation
analysis
geographic
weighted
regression
measurement
models.
The
results
showed
following.
(1)
average
increased
0.798
0.822.
Spatially,
84.14%
areas
experienced
an
improvement,
mainly
mountainous
region.
In
contrast,
decrease
observed
4.03%
areas,
primarily
concentrated
transition
zone
mountains
suburban
plain.
(2)
changed
dramatically
2020.
Landscape
intermixing
compactness
decreased
slightly
by
11.45%
7.82%,
while
connectivity
diversity
significantly
64.28%
55.44%,
respectively.
(3)
BMC’s
global
Moran’s
I
values
were
0.711
0.782,
respectively,
signifying
bipolar
agglomeration
pattern.
(4)
Among
four
selected
indices,
found
be
most
critical
factor.
It
attained
positive
contribution
forests
with
high
BMC,
but
had
negative
low
BMC.
could
provide
reference
for
planners
coordinating
conservation.
Ecological Indicators,
Journal Year:
2023,
Volume and Issue:
157, P. 111313 - 111313
Published: Nov. 22, 2023
Soil
carbon
emissions
from
subalpine
ecosystems
have
been
demonstrated
to
be
influenced
by
freeze–thaw
cycles
(FTCs).
Under
climate
change,
moisture
and
number
of
FTCs
altered
significantly
in
regions.
Thus,
we
selected
a
typical
forest
Northwest
China
conducted
an
incubation
study
explore
the
effects
various
soil
(SM)
levels
numbers
on
CO2
CH4
fluxes
during
nine
FTCs.
Our
results
revealed
that
uptakes
had
significant
responses
changes
SM
(FCO2
=
2327.32,
p
<
0.001;
FCH4
353.51,
0.001)
2506.45,
60.85,
0.001).
Specifically,
thawing
phases
freezing
were
largest
first
FTC
then
gradually
decreased
stabilized
with
increase
Regarding
SM,
at
60
90
%
water-filled
pore
space
(WFPS)
same
higher
than
those
30
WFPS.
Moreover,
interactive
279.70,
17.76,
Especially
FTC,
dramatically
amplified
uptakes.
A
partial
least
squares
path
model
further
confirmed
negative
while
positive
In
addition,
explained
more
variation
modulated
primarily
substrate
accessibility
nutrient
availability,
for
uptakes,
microbial
properties
also
played
substantial
role
addition
availability.
We
conclude
increases
due
warming
humidification
may
trigger
potentially
