How Land Use Transitions Contribute to the Soil Organic Carbon Accumulation from 1990 to 2020
Опубликована: Фев. 29, 2024
SOC
stock
(SOCS)
changes
caused
by
land
use
are
still
unclear,
and
understanding
this
response
is
essential
for
many
environmental
policies
management
practices.
In
study,
we
investigated
the
temporal-spatial
vertical
distribution
characteristics
of
SOCS
on
Western
Sichuan
Plateau
(WSP)
using
sparrow
search
algorithm-random
forest
regression
(SSA-RFR)
models
with
excellent
model
applicability
accuracy.
The
varia-tions
in
were
modeled
1080
soil
samples
a
set
nine
covariates.
We
analyzed
effect
WSP.
total
increased
18.03
Tg
C
from
1990
to
2020.
results
study
confirmed
that
area
has
significantly
since
2010,
an
increase
27.88
compared
2010.
found
spatial
southeast
northwest,
decreased
increasing
depth.
Forest
grassland
main
sources
SOCS,
accounted
37.53
59.39%
pool
2020,
respectively.
Expansion
wetlands,
forest,
areas
could
area.
Язык: Английский
Carbon Storage Simulation and Land Use Optimization for High-Water-Table Resource-Based Cities Based on the Coupled GMOP-PLUS-InVEST Model
Remote Sensing,
Год журнала:
2024,
Номер
16(23), С. 4480 - 4480
Опубликована: Ноя. 29, 2024
Exploring
land
use
evolution
and
its
impact
on
carbon
storage
is
crucial
for
mitigating
climate
change
in
resource-based
cities
promoting
green,
low-carbon
development.
This
study
constructs
a
GMOP-PLUS-InVEST
coupled
model
utilizes
remote
sensing
data
from
five
phases
of
2000
to
2020.
Four
scenarios
are
established
simulate
the
future
patterns
changes
Jining
City.
The
results
indicate
that:
(1)
2020,
farmland,
forest
land,
grassland
City
show
declining
trend;
while
construction
waters
increase,
resulting
reduction
167.35
×
10⁶
t
159.85
2020;
(2)
coal
mining
significantly
influences
nearby
utilization
types
storage,
leading
decline
reserves;
(3)
compared
other
three
scenarios,
coordinated
development
scenario
exhibits
higher
efficiency
with
lower
levels
human
disturbance;
balancing
local
economy
environment,
serving
as
sustainable
pattern
area.
outcomes
this
paper
quantitatively
reflect
relationship
between
use,
mining,
high-water-level
cities;
providing
guidance
economy,
urban
development,
ecological
environment
protection.
Язык: Английский
Implementation Strategies and Quality Evaluation Systems for Community College Guided Pathways Programs
Applied Mathematics and Nonlinear Sciences,
Год журнала:
2024,
Номер
9(1)
Опубликована: Янв. 1, 2024
Abstract
The
“Guided
Pathways”
program
in
community
colleges
can
promote
the
efficient
completion
of
students’
studies
without
restricting
their
choices
and
popularization
education.
This
paper
proposes
a
specific
strategy
for
implementation
Guided
Pathway
program,
quality
evaluation
model
based
on
Sparrow
Search
Algorithm
Deep
Neural
Networks
to
construct
an
system.
In
construction
model,
transient
optimization
perturbations
are
added
SSA
improve
diversity,
searchability,
robustness
population
position
transformation.
DNN
cannot
retain
all
valuable
features,
so
they
optimized
form
DRNN,
which
is
ISSA-DRNN.
terms
overall
performance,
ISSA-DRNN
algorithm
this
has
prediction
accuracy
more
than
98%
different
datasets,
training
testing
time
required
also
significantly
shorter
that
SVM
DRNN
algorithms,
resulting
superior
performance.
Pathways
was
conducted
at
college
District
S,
City
Q,
China.
primary
secondary
indicators
have
mean
values
between
[3.4,3.7]
[3.4,3.6]
fall
short
respondents’
expectation
4
points
meet
demand.
S
deficiencies,
it
should
be
improved
by
combining
them
with
strategies
proposed
paper.
Язык: Английский