Sustainability,
Год журнала:
2023,
Номер
15(4), С. 3073 - 3073
Опубликована: Фев. 8, 2023
To
tackle
ecological
problems,
many
restoration
projects
have
been
implemented
in
northern
China.
Identifying
the
drivers
of
vegetation
change
is
critical
for
continued
engineering.
In
this
study,
three
typical
reserves
Three-North
Shelter
Forest
Program
Region
(TNSFR)
were
selected
to
identify
their
development
characteristics
and
driving
mechanisms
using
normalized
difference
index
(NDVI),
climate
factors,
land
use
data.
The
results
show
that
(1)
NDVIs
increased
range
human
activities
all
reserves,
indicating
an
obvious
effect
projects.
(2)
planting
period,
was
mainly
correlated
with
activities.
After
entering
tending
impact
changes
on
dynamics
enhanced.
(3)
Temperature
precipitation
provided
approximate
effects
I,
while
Regions
II
III
more
strongly
precipitation.
(4)
proportion
areas
measures
exceeded
50%
regions.
short,
dominated
quantity
restoration,
influenced
quality
restoration.
Ecological Informatics,
Год журнала:
2024,
Номер
80, С. 102493 - 102493
Опубликована: Янв. 22, 2024
In
the
context
of
global
change,
it
is
vital
to
comprehensively
understand
spatial
pattern
and
driving
mechanism
vegetation
growth
maintain
stability
watershed
ecosystems.
Previous
research
has
focused
mainly
on
identifying
main
drivers
growth,
while
direct
indirect
effects
climate,
terrain,
human
activity
have
rarely
been
explored.
This
study
used
Minjiang
River
Basin
(MRB),
an
important
ecological
barrier
largest
in
southeastern
China,
as
example.
The
kernel
normalized
difference
index
(kNDVI)
was
calculated
Google
Earth
Engine
(GEE)
platform
examine
evolution
characteristics
growth.
optimal
parameter-based
geographical
detector
(OPGD)
partial
least
squares
structural
equation
modeling
(PLS-SEM)
were
analyze
how
influenced
kNDVI.
(1)
From
2001
2020,
MRB
predominantly
rated
excellent
or
good,
88.93%
area
showed
increasing
trend
(2)
OPGD
revealed
that
primary
influencing
distribution
kNDVI
included
population
density,
nighttime
light,
elevation
temperature,
which
explained
>40%
variation
interaction
all
paired
enhanced
explanatory
power
kNDVI,
among
strongest
between
density
elevation,
second
temperature.
(3)
PLS-SEM
had
a
negative
effect
terrain
climate
positive
Overall,
total
0.594,
0.233
−
0.495,
respectively,
indicating
outweighed
MRB.
These
findings
not
only
provide
scientific
evidence
for
conservation
management
but
also
offer
useful
reference
other
regions
exploring
complex
causes
patterns
Abstract
Terrestrial
ecosystems
can
exhibit
various
behaviors
in
response
to
climate
change
and
human
activities.
Nonlinear
abrupt
shifts
are
particularly
important
as
they
indicate
substantial
modifications
ecosystem
structure
function,
posing
a
threat
the
provision
of
services.
Here
we
distinguish
between
linear,
curvilinear,
productivity
from
2000
2020
China's
Loess
Plateau.
We
utilize
spatial
Random
Forest
models
analyze
driving
factors
behind
these
patterns.
Our
findings
that
84.1%
experienced
positive
plant
productivity,
while
small
proportion
(2.5%)
exhibited
negative
change.
Abrupt
prevalent
both
changes
with
often
manifesting
(79.3%).
Negative
shifts,
primarily
associated
activities
characterized
by
increased
nighttime
light
urbanization.
Land
conversion
forest
is
linked
curvilinear
trajectory
nonlinear
acceleration.
Higher
water
availability
wetter
environment
more
likely
promote
productivity.
Moderate
warming
trends
contribute
high
changes.
highlight
importance
accounting
for
diverse
development
targeted
conservation
restoration
measures.
Geophysical Research Letters,
Год журнала:
2024,
Номер
51(4)
Опубликована: Фев. 20, 2024
Abstract
Subseasonal
droughts
including
flash
have
occurred
frequently
in
recent
years,
which
are
accompanied
by
heatwaves
or
wildfires
that
raise
a
wide
concern
on
environmental
risk.
However,
the
changing
characteristics
of
subseasonal
drought
propagation,
and
possible
climate
drivers
remain
unknown.
This
study
quantifies
propagation
from
meteorological
to
soil
using
Copula‐based
Bayesian
framework,
shows
higher
risks
mainly
occur
more
humid
regions
with
denser
vegetation
cover.
Trends
risk
vary
regionally,
global
increase
2%/decade
(
p
<
0.01)
during
1980–2022.
Vegetation
greening
warming
key
over
>71%
vegetated
lands,
mean
contribution
rates
39.5%
36.5%
respectively.
Other
climatic
factors
vapor
pressure
deficit
precipitation
also
paly
critical
roles,
closely
correlate
temperature
vegetation.
These
findings
highlight
importance
dynamics.
