Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: May 19, 2025
Accurately
estimating
forest
aboveground
carbon
stock
(ACS)
is
essential
for
achieving
neutrality.
At
present,
most
non-parametric
models
still
have
errors
in
regions.
Given
the
autocorrelation
inherent
spatial
interpolation,
combining
with
interpolation
offers
significant
potential.
In
this
study,
we
combined
random
(RF)
ordinary
kriging
and
co-kriging
of
mean
annual
temperature,
precipitation,
slope,
elevation
to
establish
residual
(RFRK)
model.
Meanwhile,
also
developed
multiple
linear
regression
(MLRRK)
model
Finally,
selected
optimal
estimation
mapping
ACS.
The
results
indicate
that:
(1)
achieves
an
R2
0.871,
P
90.4%,
RMSE
3.948
t/hm2;
(2)
RFCK
precipitation
(RFCKpre)
outperforms
one
temperature
(RFCKtem),
while
RFOK
exhibits
lowest
accuracy;
(3)
RFCKpre
exponential
has
highest
accuracy,
0.63
RI
(0.23),
9.3
SSR
(41,612).
These
findings
suggest
that
RFRKpre
improved
accuracy
ACS
regional
forests.
Frontiers in Environmental Science,
Journal Year:
2025,
Volume and Issue:
13
Published: April 2, 2025
Estimating
above-ground
biomass
(AGB)
is
important
for
ecological
assessment,
carbon
stock
evaluation,
and
forest
management.
This
research
assesses
the
performance
of
machine
learning
algorithms
XGBoost,
SVM,
RF
using
data
from
Sentinel-2
Landsat-9
satellites.
The
study
influence
significant
spectral
bands
vegetation
indices
on
accuracy
AGB
estimate.
results
presented
in
paper
indicate
that
were
more
effective
than
data.
mainly
because
it
had
higher
spatial
resolution,
which
enabled
model
gradients
structural
attributes
accurately.
XGBoost
performed
best
with
an
R
2
0.82
RMSE
0.73
Mg/ha
0.80
0.71
Landsat-9.
In
current
study,
SVM
also
showed
a
substantial
0.79
0.76
For
Sentinel-2,
random
achieved
0.74
0.93
Mg/ha,
Landsat
9
yielded
0.72
0.88
Mg/ha.
Thus,
variable
importance
analysis,
have
predicting
AGB.
As
expected
their
application
research,
these
predictors
consistently
emerged
as
highly
across
models
datasets.
demonstrates
potential
integrating
remote
sensing
to
achieve
accurate
efficient
assessment.
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 24, 2025
Abstract
Accurately
estimating
forest
aboveground
carbon
stock
(ACS)
is
essential
for
achieving
neutrality.
At
present,
most
non-parametric
models
still
have
errors
in
regions.
Given
the
autocorrelation
inherent
spatial
interpolation,
combining
with
interpolation
offers
significant
potential.
In
this
study,
we
combined
Random
Forest
(RF)
Ordinary
Kriging
and
Co-Kriging
of
mean
annual
temperature,
precipitation,
slope,
elevation
to
establish
Residual
(RFRK)
model.
Meanwhile,
also
developed
Multiple
Linear
Regression
(MLRRK)
model
Finally,
selected
optimal
estimation
mapping
ACS.
The
results
indicate
that:(1)
achieves
an
R²
0.871,
P
90.4%,
RMSE
3.948
t/hm²;
(2)
RFCK
precipitation
(RFCKpre)
outperforms
one
temperature
(RFCKtem),
while
RFOK
exhibits
lowest
accuracy;(3)
RFCKpre
exponential
has
highest
accuracy,
R²of
0.63
RI
(0.23),
9.3and
SSR
(41612).
These
findings
suggest
that
RFRKpre
improved
accuracy
ACS
regional
forests.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: May 19, 2025
Accurately
estimating
forest
aboveground
carbon
stock
(ACS)
is
essential
for
achieving
neutrality.
At
present,
most
non-parametric
models
still
have
errors
in
regions.
Given
the
autocorrelation
inherent
spatial
interpolation,
combining
with
interpolation
offers
significant
potential.
In
this
study,
we
combined
random
(RF)
ordinary
kriging
and
co-kriging
of
mean
annual
temperature,
precipitation,
slope,
elevation
to
establish
residual
(RFRK)
model.
Meanwhile,
also
developed
multiple
linear
regression
(MLRRK)
model
Finally,
selected
optimal
estimation
mapping
ACS.
The
results
indicate
that:
(1)
achieves
an
R2
0.871,
P
90.4%,
RMSE
3.948
t/hm2;
(2)
RFCK
precipitation
(RFCKpre)
outperforms
one
temperature
(RFCKtem),
while
RFOK
exhibits
lowest
accuracy;
(3)
RFCKpre
exponential
has
highest
accuracy,
0.63
RI
(0.23),
9.3
SSR
(41,612).
These
findings
suggest
that
RFRKpre
improved
accuracy
ACS
regional
forests.