Research Square (Research Square),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Sept. 5, 2023
Abstract
Coastal
wetlands
are
the
most
productive
and
biologically
diverse
ecosystems,
benefiting
both
human
populations
total
environment.
However,
they
continuously
threatened
by
anthropogenic
activities.
The
Indus
River
Delta,
6th
largest
in
world,
has
been
adversely
affected
due
to
reclamation.
We
examined
spatiotemporal
dynamics
of
coastal
reclamation
Delta
from
1972
2022.
Wetlands
conversion
was
extracted
6-Landsat
images.
Land
cover
transfer
matrix
used
analyze
land
use
(LULC)
changes
different
time
intervals.
Area-weight
centroid
constructed
determine
migration
trend
wetlands.
Spatial
accurateness
assessed
using
Producer's
Accuracy
(PA),
User
(UA),
KAPPA
coefficient
(KC).
Our
results
reveled
that
2022,
net
area
natural
declined
1.9%
(26.1
km
2)
,
while
(settlement
cultivated
land)
increased
14.7%
(200.1
2
),
27.5%
(373.5
respectively.
fastest
areal
change
rate
for
−
1.1
/yr
2012
whereas
settlement
were
7.6
1992
2002
28.6
Centroids
moved
slowly
eastwards
Kharo
Chan
taluka
Keti
Bandar
first
third
decades,
then
southwards
second
decade,
later
on,
westwards
fourth
finally
back
fifth
decade
with
movement.
expanded
all
directions
over
five
decades.
migrated
first,
third,
northwards
Chan.
findings
this
study
would
provide
a
scientific
basis
sustainable
development.
Sensors,
Journal Year:
2025,
Volume and Issue:
25(4), P. 1236 - 1236
Published: Feb. 18, 2025
The
increase
in
yearly
particulate
matter
concentrations
has
been
a
constant
issue
since
2017
the
Aburrá
Valley,
located
Antioquia,
Colombia.
Although
local
certified
air
quality
monitors
provide
high
accuracy,
they
are
limited
spatial
coverage,
limiting
chemical
transport
and
pollution
dynamic
studies
this
mountainous
environment.
In
work,
local,
Low-Cost
Sensor
network
is
proposed
as
an
alternative
installed
around
valley
representative
locations
heights.
To
calibrate
PM2.5
O3
sensors
used
by
network,
temporal
delays
were
analyzed
with
Dynamic
Time
Warping
linear
scale
was
corrected
Single
Linear
Regression
model.
As
result,
correlation
coefficient
R2
of
sensor
reached
values
0.8
0.9
after
calibration.
For
all
stations,
rescaled
data
agrees
official
historical
reports
on
behavior
pollutant
meteorological
variables.
ability
to
compare
results
confirms
success
calibration/validation
method
employed
contributes
growing
field
low-cost
Latin
America.
Ecological Indicators,
Journal Year:
2023,
Volume and Issue:
156, P. 111105 - 111105
Published: Oct. 21, 2023
The
conflict
between
socio-economic
development
and
ecological
environmental
protection
presents
a
significant
challenge
to
achieving
regional
urban
sustainable
development.
In
Zhaotong
City,
Yunnan
Province,
China,
this
arises
from
the
interplay
expansion
land,
creating
fundamental
tension
built-up
non-built-up
ecosystems.
This
study
focuses
on
investigating
spatial
characteristics
of
expansion,
constructing
an
security
pattern
based
ecosystem
service
functions
sensitivity,
utilizing
integrated
models
simulate
paths
analyze
their
formation
mechanisms.
results
highlight
that
City
has
undergone
rapid
characterized
by
linear
growth
surrounding
central
city,
specifically
in
east,
north,
west
directions.
areas
exhibits
discontinuous
dotted-star
distribution,
with
concentrated
urbanization
distinct
boundary
observed
Zhaoyang
District.
contrast,
other
experience
scattered
indicative
random
land
encroachment.
Through
simulation,
three
primary
axes
are
identified:
western
town
sprawl
belt,
axis,
resource-rich
corridor.
Ecological
conflicts
primarily
arise
District,
Zhenxiong
County,
Yanjin
County.
By
combining
these
findings,
analyzes
scenario
evolution
revealing
transition
spreading
spillover
single
center
(Zhaoyang
Ludian)
during
circle
phase
polycentric
centered
around
District
along
axial
radial
paths.
conclusion,
contributes
our
understanding
challenges
posed
City.
findings
underscore
importance
integrating
considerations
into
planning
processes
need
for
practices
achieve
harmonious
coexistence
security.
insights
gained
research
offer
guidance
fostering
beyond.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Jan. 15, 2025
Land
use
and
land
cover
changes
(LULCC)
alter
local
surface
attributes,
thereby
modifying
energy
balance
material
exchanges,
ultimately
impacting
meteorological
parameters
air
quality.
The
North
China
Plain
(NCP)
has
undergone
rapid
urbanization
in
recent
decades,
leading
to
dramatic
cover.
This
study
utilizes
the
2020
data
obtained
from
MODIS
satellite
replace
default
2001
Weather
Research
Forecasting-Community
Multiscale
Air
Quality
(WRF-CMAQ)
model.
It
simulates
analyzes
direct
impact
of
LULCC
on
indirect
ozone
(O3)
concentration
through
physical
chemical
processes
during
July
summer.
Six
rapidly
urbanizing
cities
were
selected
represent
Plain.
results
show
that
significantly
increased
sensible
heat
flux
2-m
temperature
areas
throughout
diurnal
cycle,
with
more
pronounced
effects
daytime,
ranging
6.49
23.46
W/m2
0.20–0.59
°C,
respectively.
10-m
wind
speed
decreased
at
night
day,
−
0.43
0.27
m/s
0.16
0.15
day.
planetary
boundary
layer
height
generally
increased,
a
larger
rise
23.63
84.74
m.
Simultaneously,
O3
concentrations
both
daytime
nighttime.
increase
ranged
2.89
9.82
μg/m3,
while
nighttime
1.76
7.77
μg/m3.
enhanced
as
well
vertical
transport,
an
O3.
At
same
time,
it
reduced
horizontal
transport
dry
deposition
processes.
These
are
related
variations.
was
not
limited
but
extended
top
(approximately
1500
m).
Below
500
m,
concentrations,
concentrations.
Additionally,
induced
by
showed
above
surface,
whereas
process
had
smaller
surface.
reveals
significant
urban
expansion
regional
optimizes
model's
simulation
quality
provides
new
insights
into
understanding
conditions
Environment International,
Journal Year:
2025,
Volume and Issue:
197, P. 109366 - 109366
Published: March 1, 2025
Fine
particulate
matter
(PM2.5)
pollution
is
a
critical
air
quality
concern
which
poses
threats
to
public
health.
Despite
strict
control
measures
implemented
in
China
since
2013,
PM2.5
exceedances
and
region-wide
episodes
are
still
frequently
observed
the
Sichuan
Basin
(SCB)
located
southwestern
China.
Here,
we
examine
ambient
within
SCB
from
2013
2020,
focusing
on
emission
sources,
trends,
health
outcomes.
By
integrating
measurements,
inventories,
impact
model,
our
findings
reveal
notable
decrease
levels
across
basin,
with
Chengdu
Plain
showing
significant
reduction
of
56
μg/m3
2020
compared
2013.
these
improvements,
it
challenging
for
densely
populated
cities
attain
national
standards.
We
highlight
46.8
%
emissions
driven
largely
by
decreased
residential
industrial
accounted
an
average
38.6
50.3
total
reduced
emissions,
respectively.
In
contrast,
decreases
NOx
(26.0
%)
were
less
pronounced
due
modest
reductions
transportation
sectors.
Health
assessments
at
1
km
×
using
GEMM
model
attributes
157,637
deaths
long-term
exposure
2017,
stroke
ischemic
heart
disease
identified
as
leading
causes.
Further
analysis
indicates
that
variations
population
density
could
greatly
amplify
impacts
exposure,
highlighting
need
prioritize
strategies
specifically
targeting
megacities
maximize
benefits.
These
underscore
ongoing
efforts
implementation
targeted
further
improve
reduce
mortality
burden
SCB.
Sustainability,
Journal Year:
2025,
Volume and Issue:
17(7), P. 3141 - 3141
Published: April 2, 2025
Air
quality
is
an
essential
factor
for
human
health
and
ecosystem
balance,
but
in
regions
like
Petroșani
Mountain
Depression,
air
pollution
continues
to
be
a
significant
challenge.
This
area,
marked
by
decades
of
coal
mining,
confronted
with
high
concentrations
pollutants,
influenced
activities
the
specific
geography
climate.
study
aims
compare
instrumental
measurements
snow
sample
analysis,
as
sustainable
alternative
method.
Specifically,
it
examines
spatiotemporal
distribution
evolution
utilizing
long-term
monitoring
data
extensive
sampling
network
(42
points)
both
snow,
provide
thorough
understanding
dynamics
area.
The
experimental
part
this
focused
on
determining
VOCs
PM
air,
dissolved
ions
(sulfate,
calcium,
magnesium)
suspended
solids
snow.
results
highlight
correlations
between
sources
atmospheric
mountain
depressions,
while
also
analyzing
efficiency
instruments
used
collection.
emphasizes
that,
although
methods
precise
detailed
measurements,
their
implementation
isolated
presents
challenges.
Therefore,
approaches
such
analysis
can
represent
more
efficient
option
these
regions.
