Frontiers in Marine Science,
Journal Year:
2023,
Volume and Issue:
10
Published: Aug. 10, 2023
Climate
change
and
intensive
anthropogenic
activities
have
severely
challenged
the
water
quality
of
China’s
Pearl
River
Estuary
(PRE).
Further
investigations
into
long-term
variation
associated
driving
mechanisms
are
therefore
necessary
to
support
sustainable
development
PRE’s
Greater
Bay
Area
(GBA).
This
study
used
remote
sensing
retrieval
address
spatiotemporal
chlorophyll-
a
(Chl-
)
characteristics
in
PRE
relationship
between
Chl
-a
concentrations
socioeconomic/environmental
indicators.
Three
decades
Landsat
satellite
images
measured
data
were
collected,
two-band
global
algorithm
was
retrieve
Chl-
concentration
data.
Results
reveal
significant
variability
concentrations.
The
space-averaged
exhibited
slight
downward
trend
during
past
three
decades,
multi-year
mean
value
5.20
mg/L.
Changes
environmental
protection
policies
recent
years
improved
overall
quality.
western
section
had
highest
(i.e.,
5.92
mg/L
average)
while
eastern
lowest
3.98
average).
discrepancy
likely
caused
by
section’s
more
industrial
activities,
resulting
higher
wastewater
discharge
volume.
Affected
climatic
conditions,
winter
evenly
distributed
summer
significantly
higher.
Additionally,
positively
correlated
with
total
phosphorus
(TP),
nitrogen
(TN),
ammonia
(NH
3
-N),
biotic
oxygen
demand
(BOD
5
).
also
external
factors
climate
activities).
Among
these
factors,
proportion
primary
industries
coastal
cities
is
intended
help
direct
improvement
management
urban
GBA.
Water,
Journal Year:
2024,
Volume and Issue:
16(20), P. 2944 - 2944
Published: Oct. 16, 2024
Planning,
managing
and
optimising
surface
water
quality
is
a
complex
multifaceted
process,
influenced
by
the
effects
of
both
climate
uncertainties
anthropogenic
activities.
Developing
an
innovative
robust
decision
support
framework
(DSF)
essential
for
effective
efficient
management,
so
it
can
provide
information
on
assist
policy
makers
resource
managers
to
identify
potential
causes
deterioration.
This
crucial
implementing
actions
such
as
infrastructure
development,
legislative
compliance
environmental
initiatives.
Recent
advancements
in
computational
domains
have
created
opportunities
employing
artificial
intelligence
(AI),
advanced
statistics
mathematical
methods
use
improved
management.
study
proposed
comprehensive
conceptual
DSF
minimise
adverse
extreme
weather
events
change
quality.
The
utilises
machine
learning
(ML),
deep
(DL),
geographical
system
(GIS)
statistical
techniques
foundation
this
outcomes
from
our
three
studies,
where
we
examined
application
ML
DL
models
predicting
index
(WQI)
reservoirs,
utilising
find
seasonal
trend
rainfall
quality,
exploring
connection
between
streamflow,
GIS
show
spatial
temporal
variability
hydrological
parameters
WQI.
Three
potable
supply
reservoirs
Toowoomba
region
Australia
were
taken
area
practical
implementation
DSF.
serve
mechanism
distinct
characteristics
understand
correlations
rainfall,
streamflow
will
enable
enhance
their
making
processes
selecting
management
priorities
safeguard
face
future
variability,
including
prolonged
droughts
flooding.
International Journal of Environmental Research and Public Health,
Journal Year:
2022,
Volume and Issue:
19(17), P. 10962 - 10962
Published: Sept. 2, 2022
The
impact
of
rainfall
on
water
quality
may
be
more
important
in
semi-arid
regions,
where
is
concentrated
over
a
couple
months.
To
explore
the
changes
quality,
e.g.,
nitrogen
(TN)
and
phosphorous
(TP),
diversion
from
Luan
River
to
Tianjin
Watershed
northern
semi-humid
area
was
selected
as
study
area.
TN
TP
concentrations
rivers
Yuqiao
Reservoir
during
three-year
high-flow
season
(2019–2021)
were
analyzed.
response
relationship
influencing
factors
among
watershed’s
biogeochemical
process,
rainfall,
clarified.
results
showed
that
high
flow
mainly
controlled
river
flow.
concentration
inflow
regulated
by
rainfall/flow,
while
has
different
variation
characteristics
period
other
periods.
lowest
annual
observed
normal
year,
highest
wet
indicating
hydrological
process
drove
nutrient
transport
watershed.
For
tributaries,
Li
catchment
contributed
large
amount
N
P
aquatic
environment.
reservoir,
extreme
same
extremes
decreased
dry
year
which
contrast
tributaries.
spatial
reservoir
following
direction
estuary
outlet.
Considering
climate
change,
with
increase
North
China
future,
fluxes
watershed
continue
increase,
leading
phosphorus
load
downstream
reservoir.
ensure
potential
output
area,
it
necessary
strengthen
effective
prevention
control
non-point
source
pollution
Frontiers in Marine Science,
Journal Year:
2023,
Volume and Issue:
10
Published: Aug. 10, 2023
Climate
change
and
intensive
anthropogenic
activities
have
severely
challenged
the
water
quality
of
China’s
Pearl
River
Estuary
(PRE).
Further
investigations
into
long-term
variation
associated
driving
mechanisms
are
therefore
necessary
to
support
sustainable
development
PRE’s
Greater
Bay
Area
(GBA).
This
study
used
remote
sensing
retrieval
address
spatiotemporal
chlorophyll-
a
(Chl-
)
characteristics
in
PRE
relationship
between
Chl
-a
concentrations
socioeconomic/environmental
indicators.
Three
decades
Landsat
satellite
images
measured
data
were
collected,
two-band
global
algorithm
was
retrieve
Chl-
concentration
data.
Results
reveal
significant
variability
concentrations.
The
space-averaged
exhibited
slight
downward
trend
during
past
three
decades,
multi-year
mean
value
5.20
mg/L.
Changes
environmental
protection
policies
recent
years
improved
overall
quality.
western
section
had
highest
(i.e.,
5.92
mg/L
average)
while
eastern
lowest
3.98
average).
discrepancy
likely
caused
by
section’s
more
industrial
activities,
resulting
higher
wastewater
discharge
volume.
Affected
climatic
conditions,
winter
evenly
distributed
summer
significantly
higher.
Additionally,
positively
correlated
with
total
phosphorus
(TP),
nitrogen
(TN),
ammonia
(NH
3
-N),
biotic
oxygen
demand
(BOD
5
).
also
external
factors
climate
activities).
Among
these
factors,
proportion
primary
industries
coastal
cities
is
intended
help
direct
improvement
management
urban
GBA.
