Proceedings of the National Academy of Sciences,
Journal Year:
2024,
Volume and Issue:
121(46)
Published: Nov. 8, 2024
Enhancing
terrestrial
carbon
(C)
stock
through
ecological
restoration,
one
of
the
prominent
approaches
for
natural
climate
solutions,
is
conventionally
considered
to
be
achieved
an
pathway,
i.e.,
increased
plant
C
uptake.
By
conducting
a
comprehensive
regional
survey
4279
1
×
m
2
plots
at
517
sites
across
China’s
drylands
and
13-y
manipulative
experiment
in
semiarid
grassland
within
same
region,
we
show
that
greater
soil
ecosystem
stocks
restored
than
degraded
lands
result
predominantly
from
decreased
surface
loss
via
suppressed
wind
erosion.
This
biophysical
pathway
always
overlooked
model
evaluation
land-based
mitigation
strategies.
Surprisingly,
stimulated
growth
plays
minor
role
regulating
under
restoration.
In
addition,
overall
enhancement
increases
with
both
initial
degradation
intensity
restoration
duration.
At
national
scale,
rate
accumulation
(7.87
Tg
y
−1
)
due
reduced
erosion
dryland
equal
38.8%
afforestation
56.2%
forest
protection
China.
Incorporating
this
unique
but
largely
missed
C-conserving
mechanism
into
land
models
will
greatly
improve
global
assessments
potential
mitigating
change.
Science Bulletin,
Journal Year:
2023,
Volume and Issue:
68(17), P. 1928 - 1937
Published: July 25, 2023
Structural
information
of
grassland
changes
on
the
Tibetan
Plateau
is
essential
for
understanding
alterations
in
critical
ecosystem
functioning
and
their
underlying
drivers
that
may
reflect
environmental
changes.
However,
such
at
regional
scale
still
lacking
due
to
methodological
limitations.
Beyond
remote
sensing
indicators
only
recognizing
vegetation
productivity,
we
utilized
multivariate
data
fusion
deep
learning
characterize
formation-based
plant
community
structure
alpine
grasslands
first
time
compared
it
with
earlier
version
Vegetation
Map
China
historical
Over
past
40
years,
revealed
(1)
proportion
meadows
increased
from
50%
69%,
well-reflecting
warming
wetting
trend;
(2)
dominances
Kobresia
pygmaea
Stipa
purpurea
formations
steppes
were
strengthened
76%
92%,
respectively;
(3)
climate
factor
mainly
drove
distribution
formation,
but
not
recent
formation
was
likely
shaped
by
human
activities.
Therefore,
mechanisms
over
years
considered
be
dependent.
Overall,
exploration
structural
this
study
provides
a
new
perspective
understand
spatial
heterogeneity
Plateau,
also
innovates
large-scale
paradigm.
Vegetation,
as
a
crucial
carbon
sink,
is
facing
extensive
degradation
under
the
mounting
pressures
of
urbanization
and
excessive
resource
exploitation,
exacerbating
imbalance
between
sources
sinks.
In
response,
ecological
spatial
network
has
emerged
comprehensive
conservation
strategy
to
establish
maintain
connectivity
interactions
among
diverse
ecosystems,
ensuring
continuous
provision
services
preservation
biodiversity.
A
pivotal
indicator
in
this
context
vegetation
use
efficiency
(CUE),
which
elucidates
relationship
CO2
assimilation
through
photosynthesis
biomass
growth.
study,
utilizing
remote
sensing
data,
Yellow
River
Basin
(YRB)
was
selected
case
study
analyze
CUE
Carnegie
Ames
Stanford
Approach
(CASA)
Light
Use
Efficiency-Normalized
Difference
Water
Index
(LUE-NDWI)
models.
Furthermore,
Morphological
Spatial
Pattern
Analysis
(MSPA)
method
Integrated
Valuation
Ecosystem
Services
Tradeoffs
(InVEST)
model
were
employed
delineate
for
woodlands,
shrublands,
grasslands,
while
Minimum
Cumulative
Resistance
(MCR)
used
identify
corridors,
forming
an
within
YRB.
Subsequently,
interrelationship
topological
metrics
analyzed,
optimization
strategies
proposed
based
on
significance
structure
function.
The
findings
revealed
that:
(1)
Vegetation
exhibited
spatially
decreasing
trend
from
western
eastern
regions,
with
patterns
correlated
types,
temperature,
precipitation
distribution;
(2)
demonstrated
denser
configuration
upper
middle
reaches
sparser
shorter
pattern
lower
reaches,
seamless
all
regions;
(3)
Significant
correlations
observed
CUE,
prompting
adoption
construction
protection
measures
when
functional
importance
deficient,
enhancing
augmentation
corridors
structural
lacking.
implementation
these
expected
bolster
functions
network,
facilitate
cycling,
exert
positive
far-reaching
impact
sustainable
development
environment
Earth s Future,
Journal Year:
2024,
Volume and Issue:
12(3)
Published: March 1, 2024
Abstract
China
has
undertaken
extensive
ecological
restoration
(ER)
projects
since
the
late
1970s
in
drylands,
dominating
greening
of
drylands.
The
greening,
especially
ER‐induced,
can
affect
regional
water
availability
and
even
cause
hydrological
unsustainability
(i.e.,
lead
to
a
negative
shift
ecosystem
supply
demand
balances).
However,
there
is
still
limited
research
on
accurately
identifying
hydrologically
unsustainable
areas
(GA)
China's
Here,
we
developed
an
supply‐demand
indicator,
namely,
self‐sufficiency
(WSS),
defined
as
ratio
precipitation.
Using
remote
sensing
multisource
synthesis
data
sets
combined
with
trend
analysis
time
series
detection,
conducted
spatially
explicit
assessment
sustainability
risk
drylands
context
ER
over
period
1987–2015.
results
showed
that
17.15%
(6.36
×
10
4
km
2
)
GA
faced
WSS
(indicating
unsustainability),
mainly
Inner
Mongolia,
Shanxi,
Xinjiang
provinces,
driven
by
evapotranspiration.
Moreover,
29.34%
(1.09
5
GA,
whose
area
roughly
double
exhibited
potential
shortage
significant
decline
(−0.014
yr
−1
),
concentrated
Shaanxi,
Gansu
provinces.
reliability
our
findings
was
demonstrated
through
previous
studies
at
local
scale
soil
moisture
changes.
Our
offer
precise
grid‐scale
identification
providing
more
specific
spatial
guidance
for
implementation
adaptation
