H2Open Journal,
Год журнала:
2024,
Номер
8(1), С. 20 - 41
Опубликована: Дек. 19, 2024
ABSTRACT
Understanding
the
change
dynamics
of
land
use
and
cover
(LULC)
has
a
critical
influence
on
hydrological
characteristics
watershed,
economic
development,
ecological
variation,
climate
changes,
been
used
to
resolve
current
dilemmas
between
land,
water,
energy,
food
sector.
It
is
also
essential
as
observed
reflects
status
environment
provides
input
parameters
for
sustainable
natural
resource
management
optimization.
The
Chamo
catchment
undergone
large
in
LULC
which
increased
soil
erosion
lake
sedimentation.
In
this
paper,
long-term
variations
were
evaluated
using
MODIS
ESRI
Sentinel-2
datasets.
As
result,
significant
variation
was
study
area
from
2001
2022.
Spatial
temporal
two
Based
MODIS,
grassland
dominant
class,
whereas
ESRI,
rangeland
cropland
LULC.
result
policy-makers
stakeholders
water
management,
maintenance,
climatic
adoption
pathways.
findings
provided
evidence
that
are
effective
datasets
detecting
be
applied
different
areas.
E3S Web of Conferences,
Год журнала:
2024,
Номер
489, С. 04015 - 04015
Опубликована: Янв. 1, 2024
Drought
forecasting
has
implications
for
managing
water
and
irrigation.
Currently,
with
improved
technology
like
artificial
intelligence,
can
be
more
accurate.
In
this
research,
we
chose
standardized
potential
evapotranspiration
index
(SPEI)
to
characterize
drought
pattern.
To
achieve
this,
the
data
used
was
acquired
from
five
meteorological
stations
in
an
irrigated
Moroccan
perimeter
1976
2015.
Besides,
predict
SPEI
at
two
scales
(SPEI-3
SPEI-6)
inputs
combination
by
exploring
capabilities
of
M5
pruned
(M5P)
Light
Gradient
Boosting
Machine
(LightGBM),
along
their
hybrid
model
(LightGBM-M5P).
assess
effectiveness,
employed
three
statistical
metrics
(R
2
,
MAE
RMSE).
The
findings
indicated
that
using
a
larger
time
scale
analysis
enhances
ability
forecast
values
accurately.
Moreover,
revealed
M5P
demonstrated
superior
performance
compared
other
studied
models.
GEOCONEXÕES,
Год журнала:
2024,
Номер
3(20), С. 78 - 104
Опубликована: Дек. 30, 2024
As
modelagens
hidrológicas
são
amplamente
utilizadas
em
vários
estudos
e
pesquisas
para
a
gestão
de
recursos
hídricos,
tendo
sido
desenvolvidas
enfrentar
os
desafios
diferentes
níveis
complexidade
das
bacias
drenagem.
Nesse
contexto,
o
objetivo
deste
artigo
é
demonstrar
uso
da
modelagem
hidrológica
com
SWAT+
(Soil
and
Water
Assesment
Tool
Plus)
como
ferramenta
simulação
processos
análise
ambiental
pequenas
hidrográficas,
destacando
soluções
encontrados
uma
satisfatória.
Para
isso,
bacia
hidrográfica
do
Rio
Iconha,
localizada
no
estado
Espírito
Santo
(Brasil),
foi
usada
exemplo,
executando-se
sua
modelagem,
calibração
validação.
Fica
demonstrado
que
principais
estão
ligados
à
carência
dados
espaciais
escala
adequada
disponibilidade
monitoramento
validação
modelagem.
Por
outro
lado,
versatilidade
cenários
capacidade
representação
dos
aspectos
quantitativos
aos
diversos
hidrossedimentológicos
destacadas
pontos
positivos
SWAT+.
Assim,
surge
alternativa
quantificação
diversas
variáveis,
entradas
saídas
sistema,
principalmente
tange
às
demandas
aplicação
avaliação
métodos
conceitos
associados
ao
planejamento
hidrográficas.
Journal of Water and Climate Change,
Год журнала:
2023,
Номер
14(12), С. 4598 - 4616
Опубликована: Ноя. 2, 2023
Abstract
We
use
a
Generalized
Watershed
Loading
Function
(GWLF)
model
to
simulate
streamflow
in
the
Gualí
River
Basin.
The
model's
performance
is
assessed
using
metrics
such
as
percentage
of
bias
(PBIAS),
Nash–Sutcliffe
efficiency
(NSE),
RMSE–observations
standard
deviation
ratio
(RSR),
and
Kling–Gupta
(KGE)
indicate
good
performance.
Furthermore,
we
analyze
projections
precipitation
several
global
climate
models
(GCMs)
from
Coupled
Model
Intercomparison
Project
Phase
6
(CMIP6)
three
shared
socioeconomic
pathways
(SSP1-2.6,
SSP2-4.5,
SSP5-8.5).
Despite
uncertainties
coarse
resolution,
our
results
show
that
increases
mean
significantly
decreasing
trends
projected
are
observed
2015
2099
under
SSP5-8.5
scenario.
findings
suggest
an
increase
long-term
mid-flow
low-flow.
Moreover,
this
work
provides
methodological
framework
for
hydrological
modeling
small
tropical
river
basins,
by
incorporating
data
GCMs
while
raising
concerns
caveats.
This
study
offers
valuable
insights
into
potential
effects
change
on
Andean
basin
characterized
volcanic
activity
significant
human
impacts.
reported
here
provide
useful
information
future
decisions
related
water
supply
social,
environmental,
productive
sectors
seven
towns
within
catchment.
Journal of Water and Climate Change,
Год журнала:
2024,
Номер
15(7), С. 3015 - 3032
Опубликована: Май 29, 2024
ABSTRACT
We
studied
the
projections
of
streamflows
under
climate
change
scenarios
in
Upper
Orinoco
River
Basin
by
using
precipitation
from
15
global
and
regional
models
for
period
2020–2099.
For
this
purpose,
we
calibrated
validated
a
hydrological
model
with
very
good
performance.
Our
results
show
that
both
streamflow
have
significant
reduction
RCP8.5
scenario
ranges
5
7%
relation
to
long-term
means
at
end
century.
The
changes
variables
are
not
RCP2.6
scenario.
Moreover,
compute
several
indicators
quantify
alterations
high-,
mid-,
low-range
flows.
suggest
main
future
runoff
would
be
evidenced
mid-range
low
flows,
which
could
increase
around
∼5
∼25%,
respectively.
These
lead
hydrological,
environmental,
ecological
balance
basin.
This
work
provides
information
regarding
possible
effects
on
one
most
important
river
basins
northern
South
America,
is
pivotal
supporting
decision-making
water
supply
social,
productive
sectors.
