Geology Ecology and Landscapes,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 19
Published: Dec. 8, 2024
This
study
investigates
the
morphometry
of
Bakkhali
watershed
(BW)
in
hilly
districts
Cox's
Bazar
and
Bandarban,
Bangladesh,
to
analyze
its
hydrological
characteristics.
Morphometric
parameters
were
utilized
prioritize
sub-watersheds
(SWs)
through
a
hybrid
approach
combining
principal
component
analysis
(PCA)
weighted-sum
(WSA).
Using
ArcGIS
Pro
2.7.0,
streams,
watershed,
SWs
delineated
from
30-m
resolution
COP30
DEM.
Preliminary
priority
ranks
(PPR)
determined
based
on
direct
inverse
relationships
morphometric
soil
erodibility.
Weighted
compound
factors
(CF)
calculated
PCA
results
for
final
prioritization.
The
BW,
fifth-order
with
drainage
area
571.52
km²,
shows
consistent
decrease
number
streams
increasing
stream
order,
indicating
an
erosional
landform.
mean
bifurcation
ratio
4.09
suggests
higher
tendency
erosion.
Shape
indicate
elongated
less
pronounced
peak
flow
identified
SW2
SW3
as
high-erosion
zones,
SW4
SW9
medium-erosion
SW1
low-erosion
zone.
demonstrates
efficacy
geospatial
statistical
tools
SW
Land,
Journal Year:
2024,
Volume and Issue:
13(2), P. 174 - 174
Published: Feb. 1, 2024
The
existing
digital
soil
maps
are
mainly
characterized
by
coarse
spatial
resolution
and
not
up
to
date;
thus,
they
unable
support
the
physical
process-based
models
for
improved
predictions.
overarching
objective
of
this
work
is
oriented
toward
a
data-driven
approach
datacube-based
tools
(Soil
Data
Cube),
leveraging
Sentinel-2
imagery
data,
open
access
databases,
ground
truth
data
Artificial
Intelligence
(AI)
architectures
provide
enhanced
geospatial
layers
into
Revised
Universal
Soil
Loss
Equation
(RUSLE)
model,
improving
both
reliability
final
map.
proposed
methodology
was
implemented
in
agricultural
area
Imathia
Regional
Unit
(northern
Greece),
which
consists
mountainous
areas
lowlands.
Enhanced
Organic
Carbon
(SOC)
texture
were
generated
at
10
m
through
time-series
analysis
satellite
an
XGBoost
(eXtrene
Gradinent
Boosting)
model.
model
trained
84
samples
(collected
from
fields)
taking
account
also
additional
environmental
covariates
(including
elevation
climatic
data)
following
Digital
Mapping
(DSM)
approach.
introduced
RUSLE’s
erodibility
factor
(K-factor),
producing
erosion
layer
with
high
resolution.
Notable
prediction
accuracy
achieved
AI
R2
0.61
SOC
0.73,
0.67
0.63
clay,
sand,
silt,
respectively.
average
annual
loss
unit
found
be
1.76
ton/ha/yr
6%
total
suffering
severe
(>11
ton/ha/yr),
border
regions,
showing
strong
influence
mountains
fields.
overall
could
strongly
regional
decision
making
planning
policies
such
as
European
Common
Agricultural
Policy
(CAP)
Sustainable
Development
Goals
(SDGs).
Lakes & Reservoirs Science Policy and Management for Sustainable Use,
Journal Year:
2025,
Volume and Issue:
30(1)
Published: Jan. 1, 2025
ABSTRACT
Morphometric
analysis
plays
a
key
role
in
understanding
the
geological
and
hydrological
behaviour
of
watersheds
their
prioritisation
for
soil
conservation.
The
Punarbhaba‐Atrai‐Jamuna
river
system
northwest
Bangladesh
is
agriculturally
important,
but
are
frequently
affected
by
droughts
summer
erosion
during
monsoon
season.
morphological
studies
on
this
systems
very
limited,
hence,
aim
study
was
to
investigate
characteristics
largest
basins
prioritise
studied
based
vulnerability
using
two
approaches.
remote
sensing
tools
were
used
delineate
analyse
linear,
areal
relief
aspects
morphometric
indices
six
Dinajpur
district
as
conventional
methods
determining
basin
expensive
time‐consuming.
included
following
regions—Dinajpur
Sadar‐Birganj
(DS‐B),
Sadar‐Khansama
(DS‐K),
Chirirbandar‐Khansama
(C‐K),
Nawabganj‐Chirirbandar
(N‐C),
Birampur‐Parbatipur
(B‐P)
Hakimpur‐Parbatipur
(H‐P).
results
bifurcation
ratio,
length
overland
flow,
drainage
density,
texture
constant
channel
maintenance
indicated
that
well‐dissected
had
less
flood
risk.
values
form
factor,
elongation
circularity
ratio
compactness
coefficient
dictated
an
elongated
shape
all
with
mature
adjustment.
multi‐criteria
prioritisation,
combining
land
use
factors,
offers
holistic
watershed
signifying
DS‐B
N‐C
most
vulnerable
watersheds,
which
require
sustainable
development
decision
making
framework
management.
This
research
also
provides
brief
features
three
complex
design
management
practices
conservation
open
dimension
future
application
models
estimate
loss.
Frontiers in Environmental Science,
Journal Year:
2025,
Volume and Issue:
13
Published: May 9, 2025
Soil
erosion
has
been
significantly
exacerbated
by
climate
change
and
urbanization,
posing
serious
threats
to
environmental
protection
sustainable
development.
In
this
study,
soil
in
the
Daqing
River
Basin
from
2000
2022
was
assessed
using
revised
universal
loss
equation
(RUSLE)
model,
which
incorporates
data
digital
elevation
model
(DEM),
normalized
vegetation
index
(NDVI),
land-use
sources,
spatiotemporal
evolution
of
subsequently
analyzed.
The
impacts
natural
anthropogenic
factors
on
their
interactions
with
were
analyzed
via
random
forest
partial
least
squares-structural
modeling
(PLS-SEM).
results
revealed
that
averaged
159
t/(km
2
·a)
2022,
averages
386
mountains
1.1
plains.
intensity
increased
southeast
northwest,
higher
levels
than
level
initially
improved
but
then
deteriorated
sharply
after
a
significant
turning
point
2015.
Natural
factors,
particularly
precipitation,
largest
drivers
throughout
Basin,
whereas
had
greater
impact
plains
mountains.
There
strong
synergy
among
various
basin.
mountains,
antagonistic
coverage,
plains,
they
synergistic
coverage
meteorological
factors.
Heliyon,
Journal Year:
2024,
Volume and Issue:
10(5), P. e26728 - e26728
Published: Feb. 22, 2024
Soil
erosion
across
watersheds
and
river
basins
is
an
alarming
environmental
deterioration
process
that
poses
severe
risks
to
hydrological
systems,
hydrogeochemical
processes,
agricultural
productivity,
the
global
natural
ecosystem.
The
use
of
Analytical
Hierarchy
Process
(AHP)
Geographical
Information
System
(GIS)
assess
soil
erosivity
for
watershed
widely
known.
This
study
applied
AHP
GIS
understand
degree
hilly
Karnaphuli
in
Chattogram,
Bangladesh.
used
topographical
maps,
satellite
imagery
datasets.
It
implemented
GIS-based
weighted
overlay
technique
derive
eight
factors
(slope,
elevation,
Stream
Power
Index
(SPI),
Land
Use
Cover
(LULC),
curvature,
soil,
Topographic
Wetness
(TWI),
rainfall.
geological
stage
potential
was
also
identified
using
Digital
Elevation
Model
(DEM)
data
through
hypsometric
analysis.
findings
demonstrated
eastern
north-western
parts
are
particularly
vulnerable
compared
other
area.
most
dominant
variables
influence
slope,
LULC,
SPI.
According
analysis,
slope
influential
factor
(26%),
followed
by
LULC
(23.8%),
elevation
(20.3%),
SPI
(13.9%)
process,
determined
from
curve
(S-shaped)
integral
(0.49),
which
revealed
moderately
eroded
areas
characterized
whole
research
region.
significant
as
they
provide
valuable
information
researchers
planners
address
develop
measures
control
it
effectively.