The Role of Climate Change and Its Sensitivity on Long-Term Standardized Precipitation Evapotranspiration Index, Vegetation and Drought Changing Trends over East Asia
Plants,
Journal Year:
2024,
Volume and Issue:
13(3), P. 399 - 399
Published: Jan. 29, 2024
Droughts
have
become
more
severe
and
frequent
due
to
global
warming.
In
this
context,
it
is
widely
accepted
that
for
drought
assessments,
both
water
supply
(rainfall)
demand
(standardized
precipitation
evapotranspiration
index,
SPEI)
should
be
considered.
Using
SPEI,
we
explored
the
spatial-temporal
patterns
of
dry
wet
annual
seasonal
changes
in
five
sub-regions
East
Asia
during
1902-2018.
These
factors
are
linked
excess
frequency
severity
on
regional
scale,
their
effect
vegetation
remains
an
important
topic
climate
change
studies.
Our
results
show
SPEI
significantly
improved
extreme
mostly
affected
SPEI-06
SPEI-12
growing
seasons
1981-2018.
The
trends
affect
Asia.
had
two
extremely
spells
1936-1947
1978-2018.
Japan,
South
Korea,
North
Korea
summer
compared
other
regions
Asia,
with
occurring
at
51.4%,
respectively.
mean
frequencies
China
Mongolia
57.4%
54.6%.
driest
high
duration.
spatial
analysis
solar
radiation
(SR),
vapor
pressure
(WVP),
wind
speed
(WS),
condition
index
(VCI),
temperature
(TCI),
health
(VHI)
confirmed
region
suffered
from
maximum
events.
variation
shows
no
clear
drying
autumn
seasons.
During
winter
spring
seasons,
there
was
a
trend
region.
1902-1990,
presented
diverse
characteristics,
Mongolia,
four
different
Korea.
1991-2018,
while
showed
spring,
autumn,
This
ecological
climatic
mechanism
provides
good
basis
assessment
drought-change
variations
within
An
understandings
long-term
effects
rainfall
droughts
varying
essential
resource
management
adaptation.
Based
results,
resources
will
increase
under
warming,
which
may
alleviate
scarcity
issue
Language: Английский
Urban Expansion-Induced Land Use Land Cover Changes and the Subsequent Changes in Ecosystem Service and Land Surface Temperature in the Central Highland of Ethiopia
Belew Bekele,
No information about this author
Wei Wu,
No information about this author
Lemma Tsegaye
No information about this author
et al.
Environmental and Sustainability Indicators,
Journal Year:
2025,
Volume and Issue:
unknown, P. 100626 - 100626
Published: Feb. 1, 2025
Language: Английский
Drought Characteristics and Drought-Induced Effects on Vegetation in Sri Lanka
Climate,
Journal Year:
2024,
Volume and Issue:
12(11), P. 172 - 172
Published: Oct. 29, 2024
Understanding
the
spatiotemporal
characteristics
of
drought
and
its
impacts
on
vegetation
is
a
timely
prerequisite
to
ensuring
agricultural,
environmental,
socioeconomic
sustainability
in
Sri
Lanka.
We
investigated
(duration,
severity,
frequency,
intensity)
from
1990
2020
by
using
Standardized
Precipitation
Evapotranspiration
Index
(SPEI)
at
various
timescales
cumulative
lagged
effects
between
2000
across
climatic
zones
Lanka
(Dry,
Wet,
Intermediate).
SPEI
indexes
1-,
3-,
6-,
12-,
24-month
scales
were
used
analyze
characteristics.
Frequent
droughts
(~13%)
common
all
zones,
with
concentration
Dry
zone
during
last
decade.
Drought
occurrences
mostly
ranged
moderate
severe
extreme
events
more
zone.
This
research
Normalized
Difference
Vegetation
(SNDVI)
0
vegetation.
Cumulated
had
maximum
correlation
coefficient
values
concentrated
−0.41–0.98
range
affected
40%
16%
Intermediate
within
1–4
months.
The
effect
SNDVI
showed
−0.31–0.94
high
areas
primarily
distributed
zones.
Over
60%
impact
1
month,
while
52%
Wet
experienced
it
over
11
resulting
dominant
shorter
timescale
responses
indicate
higher
sensitivity
findings
this
study
provide
important
insights
into
possible
changes
their
climate
Language: Английский