Geocarto International,
Год журнала:
2023,
Номер
38(1)
Опубликована: Март 18, 2023
Currently,
the
monitoring
of
rocky
desertification(RD)
is
concentrated
in
karst
area,
whereas
study
red-bed
areas
rare.
In
this
paper,
we
present
a
multi-scale
classification
framework
for
RD
based
on
spectral-spatial
features.
At
pixel
scale,
explored
several
spectral
indices
statistics
and
separability
analysis
land
cover
samples.
The
homogeneous
covers
were
classified
by
decision
rules
from
selected
(such
as
NDIOI,
NRRI
NDGI);
patch
classes
further
distinguished
spatial
multiple
neighborhood
features
including
proximity,
linear
density,
buffer
distance.
method
was
applied
an
OLI
image
over
area
northwestern
Jiangxi,
south
central
China,
validated
using
ground-based
observations.
experimental
results
verification
comparison
are
satisfactory.
This
work
demonstrates
methodological
supplement
to
red
bed
RD.
Applied Water Science,
Год журнала:
2024,
Номер
14(4)
Опубликована: Март 14, 2024
Abstract
Groundwater
is
one
of
the
fundamental
sources
fresh
water.
Currently,
unequal
distribution
groundwater
poses
a
significant
environmental
crisis,
leading
to
scarcity
in
certain
regions
and
affecting
livelihood
living
organisms
worldwide.
The
present
study
introduces
Sub-Himalayan
foothills
Dooars,
highly
populated
agriculturally
based
area.
To
delineate
potentiality
eight
different
effective
parameters
have
been
employed
such
as
slope,
geomorphology,
soil,
LULC,
lineament,
rainfall,
hydrogeology,
drainage
density.
For
process
development
these
thematic
layers,
geographic
information
systems
satellite
images
(Landsat
8)
used
give
normalized
weight
rank
value
each
layer
their
sub-criteria.
MCDA-AHP-based
model
for
overlay
analysis
(GWPZ).
After
ArcGIS
10.2.2
final
map
further
grouped
into
four
zones,
i.e.,
very
high,
moderate,
low
potential
zones.
A
high
zone
encompasses
22.45
sq.
km.
southern
portion
selected
region.
1613.32
km
southeastern
part,
moderate
covered
by
1063.84
sq.km,
71.03
sq.km
(2.56%
area
region)
zone.
available
well
data
from
CGWB
utilized
assess
district,
ensuring
originality
authentic
validation.
It
found
that
there
correlation
between
observed
existing
data.
With
growing
population
Dooars
region,
has
corresponding
rise
demand
Hence,
this
research
would
assist
authorities
policymakers
effectively
managing
resources
district.
Hydrology,
Год журнала:
2025,
Номер
12(3), С. 58 - 58
Опубликована: Март 14, 2025
Nowadays,
modelling
groundwater
potential
zones
(GWPZs)
based
on
scientific
principles
and
modern
techniques
is
a
major
challenge
for
scientists
around
the
world.
This
even
greater
in
arid
semi-arid
areas.
Unmanned
aerial
vehicles
(UAVs),
geographic
information
systems
(GISs),
multi-criteria
decision
making
(MCDM)
are
that
have
been
applied
various
fields,
especially
exploration.
study
attempts
to
apply
workflow
GWPZs
using
UAV
technology,
GIS,
MCDM
An
survey
provided
high-resolution
DEM
of
4
cm.
Six
influencing
factors,
including
elevation
model,
drainage
density,
lineament
slope,
flood
zone,
topographic
wetness
index,
were
considered
delineate
GWPZs.
Four
classes
identified,
namely
high
(4.64%),
moderate
(23.74%),
low
(18.2%),
very
(53.42%).
Three
validation
methods,
borehole
yield
data,
receiver
operating
characteristic
area
under
curve
(ROC-AUC),
principal
component
analysis
(PCA),
used
gave
accuracies
82.14%,
65.4%,
72.49%,
respectively.
These
validations
indicate
satisfactory
accuracy
justify
effectiveness
approach.
The
mapping
areas
important
availability
planning
water
resources
management
sustainable
development.
Hydrology,
Год журнала:
2025,
Номер
12(4), С. 68 - 68
Опубликована: Март 24, 2025
Understanding
the
spatial
and
seasonal
dynamics
of
surface
water
bodies
is
imperative
for
addressing
security
challenges
in
water-scarce
regions.
This
study
aimed
to
evaluate
efficacy
multi-date
Sentinel-2-derived
spectral
indices,
specifically
normalized
difference
index
(NDWI),
modified
(MNDWI),
Sentinel
2
Water
Index
(SWI),
conjunction
with
landscape
metrics
mapping
fluctuations
bodies.
Google
Earth
Engine
(GEE)
was
employed
this
assessment.
The
research
achieved
impressive
overall
accuracies,
ranging
from
96
100%
both
dry
wet
seasons,
highlighting
robustness
methodology.
revealed
significant
differences
terms
size
coverage
between
seasons.
Surprisingly,
season
exhibited
a
higher
prevalence
when
compared
season,
indicating
unexpected
patterns
availability
region
substantial
heterogeneity
Meanwhile,
characterized
by
extensive
coverage.
These
findings
challenge
conventional
assumptions
about
resource
during
different
Based
on
findings,
recommends
that
management
strategies
semi-arid
regions
consider
observed
variability
Policymakers
stakeholders
should
adopt
adaptive
approaches
address
unique
posed
differing
body
Future
endeavors
explore
underlying
factors
driving
these
assess
potential
long-term
impacts
availability.
can
help
develop
more
resilient
sustainable
cope
changing
climate
conditions
tropical
environments.
IOP Conference Series Earth and Environmental Science,
Год журнала:
2023,
Номер
1158(2), С. 022025 - 022025
Опубликована: Апрель 1, 2023
Abstract
Human
activity
has
dramatically
altered
the
environment
around
world.
Most
of
these
modifications
occurred
in
natural
habitats
due
to
human
activities.
On
other
hand,
variations
climatic
conditions
required
sustain
appropriately
performing
ecosystems
are
becoming
increasingly
challenging
for
managers
and
policymakers.
Often,
pollution
associated
with
activities
is
diffuse,
occurs
over
a
wide
geographic
area,
accumulates
time.
Assessing,
monitoring,
eventually
connecting
relevant
environmental
variables
landscape
development
crucial
overcoming
problems.
Remote
monitoring
evaluation
agroecosystem
changes,
using
sensors,
global
positioning
systems,
satellite-based
platforms,
provides
constant
assessment
field
dynamics
on
large
scale.
This
study
reviewed
critical
advances
remote
sensing
sustainable
agroecosystem.
