Ecological Indicators,
Journal Year:
2023,
Volume and Issue:
154, P. 110485 - 110485
Published: June 17, 2023
Evapotranspiration
(ET)
is
a
vital
variable
in
the
water
and
energy
cycles
significantly
influenced
by
changing
environmental
conditions.
However,
data-lacking
agro-pastoral
ecotone
northern
China
(APENC)
that
has
undergone
warming
wetting
climate
trend
implemented
series
of
ecological
restoration
projects
(ERP),
effects
change
vegetation
greening
on
magnitude,
drivers,
mechanism
ET
variations
are
not
fully
understood
yet.
In
this
study,
we
evaluated
nine
commonly
used
products
to
determine
most
applicable
one
APENC
based
in-situ
observations
balance
method.
Subsequently,
variation
was
examined
contribution
each
factor
from
1982
2017
quantified.
Results
show
Global
Land
Evaporation
Amsterdam
Model
(GLEAM)
performed
best
meets
accuracy
requirements
for
research
APENC.
Based
GLEAM
data,
our
analysis
reveals
notable
increase
at
rate
1.11
mm/y
(p
<
0.05).
Regions
with
significant
mainly
concentrated
middle
southwest
parts
APENC,
while
decreasing
observed
northeast
region.
Contributory
showed
precipitation
(PRE)
leaf
area
index
(LAI)
were
dominant
factors
controlled
variation,
whereas
air
temperature
indirectly
affected
promoting
LAI
growth
during
1982–2017.
PRE
dominated
before
implementation
ERP
(1982–1999),
positive
exceeded
since
2000
become
factor.
Our
findings
bridge
gap
study
region
provide
important
information
resource
management
rehabilitation.
Global Ecology and Conservation,
Journal Year:
2021,
Volume and Issue:
32, P. e01947 - e01947
Published: Nov. 30, 2021
A
series
of
policies
have
been
implicated
in
the
Qilian
Mountain
National
Park
(QLMNP)
to
combat
climate
change
(CC).
Distinguishing
impacts
CC
and
human
activities
(HA)
on
vegetation
dynamics
QLMNP
is
crucial
for
implementation
ecological
conservation.
Here,
we
quantify
contributions
HA
net
primary
productivity
(NPP)
using
partial
derivatives
dividing
them
into
six
different
scenarios.
The
results
indicated
that
average
annual
NPP
over
whole
park
significantly
increased
(2.14
g
C
m−2
yr−1)
a
major
portion
(74.39%)
exhibited
significant
restoration;
only
0.14%
underwent
degradation
during
2000–2019.
Precipitation
was
dominant
climatic
factor
influenced
(56.66%),
while
influences
temperature
solar
radiation
account
28.92%
14.42%,
respectively.
factors
were
positively
correlated
with
most
regions
QLMNP.
relative
increase
39.70%
60.30%,
HA-dominated
areas
contained
restoration
projects.
In
addition,
substantial
differences
observed
CC-dominated
areas;
70.73%
29.27%
showed
decrease
NPP.
Moreover,
mainly
distributed
low-value
areas,
precipitation
negatively
this
area.
general,
projects
made
positive
contribution
eco-environment
Journal of Hydrology Regional Studies,
Journal Year:
2023,
Volume and Issue:
47, P. 101366 - 101366
Published: March 16, 2023
The
Tibetan
Plateau
Evapotranspiration
(ET)
plays
a
critical
role
in
the
water
balance,
energy
budget,
and
carbon
cycle.
However,
variations,
trends,
controls
of
ET
on
(TP)
are
poorly
understood
because
uncertainties
estimates
sparse
observations.
In
this
study,
variations
its
components
their
drivers
TP
were
analyzed
at
seasonal
annual
scales
during
1982–2015.
Spatially,
multiyear
mean
decreased
from
southeastern
to
northwestern
TP.
Canopy
transpiration
(Ec)
was
main
component
(52.7%),
followed
by
soil
evaporation
(Es)
(34.4%)
interception
(Ei)
(10.7%).
Regionally,
averaged
increased
significantly
scales.
controlling
factor
for
changed
as
climatic
zones
transferred
aridity
humidity.
controlled
moisture
(SM)
arid
semi-arid
zones,
whereas
Ta
dominant
other
regions.
Es
Ei
primarily
caused
SM,
while
Ec
determined
Ta.
addition,
NDVI
played
certain
regulating
variations.
This
study
improves
our
understanding
hydrological
processes
resource
management
under
global
climate
change.
Remote Sensing,
Journal Year:
2023,
Volume and Issue:
15(4), P. 960 - 960
Published: Feb. 9, 2023
Due
to
climate
change
and
human
activities,
the
eco-environment
quality
(EEQ)
of
eco-fragile
regions
has
undergone
massive
change,
especially
in
Tibet
Plateau.
The
Qilian
Mountains
(QLM)
region
is
an
essential
ecological
function
zone
northeastern
Plateau,
which
plays
a
vital
role
northwestern
China’s
eco-environmental
balance.
However,
EEQ
changes
QLM
during
21st
century
remain
poorly
understood.
In
this
study,
spatiotemporal
variations
were
analyzed
from
2000
2020
using
remote
sensing
index
(RSEI).
driving
factors
are
identified
by
geographic
detector,
spatial
influence
critical
represented
geographically
weighted
regression
model.
results
show
low
QLM.
From
2020,
initially
slightly
improved,
then
deteriorated,
finally
gradually
recovered.
Spatially,
shows
increasing
trend
northwest
southeast.
Moran’s
I
remains
at
around
0.95,
representing
high
aggregation.
“High–High”
“Low–Low”
clustering
features
dominate
local
autocorrelation,
indicating
polarized.
Precipitation
dominant
positive
factor
EEQ,
with
q
statistics
exceeding
0.644.
Furthermore,
key
(precipitation,
distance
towns,
roads)
affecting
different
periods
vary
significantly
space.
we
can
draw
conclusion
that
natural
mainly
control
patterns
while
impact
temporal
been
improved
since
2015.
Our
findings
provide
theoretical
support
for
future
protection
restoration
