Sustainability,
Journal Year:
2024,
Volume and Issue:
16(24), P. 11123 - 11123
Published: Dec. 18, 2024
The
Qinghai–Tibetan
Plateau
(QTP)
has
the
largest
area
of
natural
grassland
in
China,
and
continuous
degradation
poses
a
serious
threat
to
regional
ecological
security
sustainable
resource
management.
It
is
essential
comprehensively
evaluate
cost–benefit
differences
drivers
across
various
zones
enhance
management
practices.
This
study
presents
zonal
framework
for
restoration
degraded
grasslands
based
on
analysis,
specifically
applied
Qinghai
Northeastern
QTP.
results
indicate:
(1)
Although
overall
NDVI
shows
an
upward
trend,
some
areas
still
exhibit
significant
degradation.
(2)
Cost–benefit
analysis
can
divide
into
four
types
Ecological
Management
Zones
(EMZs):
high-cost–high-benefit
zone,
high-cost–low-benefit
low-cost–low-benefit
low-cost–high-benefit
zone.
(3)
driving
factors
show
different
EMZs.
Based
these
research
findings,
differentiated
spatial
planning
strategies
were
developed
each
EMZ.
not
only
provides
scientific
methodology
but
also
offers
important
insights
resources
QTP
other
ecologically
sensitive
areas.
As
the
largest
terrestrial
ecosystem
globally,
grasslands
and
their
Gross
Primary
Productivity
(GPP)
play
a
critical
role
in
global
carbon
cycle,
influenced
by
environmental
changes
human
activities.
This
study
classifies
into
multiple
types,
uses
trend
analysis
to
investigate
temporal
spatial
of
GPP
for
various
grassland
types
from
2010
2020,
extracts
approximately
940,000
pixel
data
identify
evaluate
factors
using
best
prediction
model
PLS-PM
structural
equation
model.
The
results
indicate
that
shows
an
increasing
trend,
concentrated
mid-
low-latitude
regions,
with
differences
between
hemispheres.
Woody
Savannas
have
highest
mean
GPP,
while
Grasslands
lowest.
At
low
altitudes,
peaks,
reaching
maximum
elevations
at
4580
m
4950
m,
respectively,
persist
higher
altitudes
lowest
GPP.
Climate
soil
hydrology
contributed
most
significantly
accounting
62.11%-77.95%,
showing
contribution
(71.63%).
Within
climate
factors,
actual
evapotranspiration,
volumetric
water
layer,
fraction
photosynthetically
active
radiation,
temperature
had
significant
positive
impacts
on
CO2
concentration
activities
smaller
direct
contributions,
primarily
influencing
indirectly.
Topographic
least.
These
findings
reveal
dominant
highlight
differing
growth
trends
among
providing
insights
responses
change
