SSRN Electronic Journal,
Journal Year:
2022,
Volume and Issue:
unknown
Published: Jan. 1, 2022
Shallow
lakes
are
greatly
influenced
by
submerged
aquatic
vegetation
(SAV),
which
affects
hydraulic
and
water
quality
during
their
entire
life
cycle.
An
integrated
model
was
developed
based
on
the
Environmental
Fluid
Dynamics
Code
(EFDC),
considers
dynamic
bottom
roughness
sediment
release
flux
related
to
SAV
growth
decomposition.
Model
results
of
hydrodynamics,
quality,
sediment-P
in
Baiyangdian
Lake
(BL)
were
analyzed
with
without
module.
The
showed
that
played
a
critical
alterable
role
regulating
internal
loading
lakes.
During
period
exponential
growth,
reduced
velocity
Zaozhadian
20.06%
11.68%,
respectively.
senescence,
19.32%
increased
49.36%,
mainly
attributed
DO
consumption
residue
To
mitigate
adverse
effects
loading,
measures
should
be
taken
control
ensure
timely
salvage
before
Water,
Journal Year:
2016,
Volume and Issue:
8(6), P. 243 - 243
Published: June 7, 2016
This
paper
reviews
aspects
of
the
performance
large
(>40
ha)
constructed
treatment
wetlands
intended
for
phosphorus
control.
Thirty-seven
such
have
been
built
and
good
data
records,
with
a
median
size
754
ha.
All
are
successfully
removing
from
variety
waters.
Period
record
concentration
reductions
were
71%,
load
0.77
gP·m−2·year−1,
rate
coefficients
12.5
m·year−1.
Large
narrower
spectrum
than
larger
group
all
sizes.
Some
systems
display
startup
trends,
ranging
to
several
years,
likely
resulting
antecedent
soil
vegetation
conditions.
There
internal
longitudinal
gradients
in
concentration,
which
vary
lateral
position
flow
Accretion
inlet
zones
may
require
attention.
Concentrations
reduced
plateau
values,
range
about
10–50
mgP·m−3.
Vegetation
type
has
an
effect
upon
measures,
its
presence
facilitates
performance.
Trends
measures
over
history
individual
only
small
changes,
both
increases
decreases
occurring.
Such
trends
remove
little
variance
behavior.
Seasonality
is
typically
weak
steady
systems,
most
variability
appears
be
stochastic.
Stormwater
differences
between
wet
dry
season
behavior,
appear
flow-driven.
Several
models
system
developed,
dynamic.
Ecological Indicators,
Journal Year:
2021,
Volume and Issue:
130, P. 108082 - 108082
Published: Aug. 14, 2021
The
over-proliferation
of
phytoplankton
has
been
a
public
concern
for
the
last
several
decades.
To
evaluate
importance
different
environmental
factors
on
biomass
variations
with
their
complex
response
relationships
in
large
eutrophic
Lake
Okeechobee,
nonlinear
methods
including
Generalized
Additive
Model
(GAM)
and
Random
Forest
(RF)
algorithm
were
employed.
A
long-term
monitoring
dataset
8
sampling
sites
ranging
from
January
1996
to
December
2010
was
applied
explore
driven
scales
Okeechobee.
Results
showed
spatially
heterogeneous
distribution
there,
western
southern
littoral
zones
occurred
heavier
algal
blooms
than
central
pelagic
zones.
Spearman's
correlation
results
denoted
Chlorophyll
(Chla)
negatively
correlated
phosphorus
scales.
In
aspect
temporal
variations,
appeared
three-peak-two-valley
variation
trend
which
peaked
1997,
2003,
2010,
respectively.
On
lake-wide
scale,
RF
model
indicated
that
inorganic
nutrients
primary
predictors
biomass,
while
underwater
light
availability
followed
play
essential
roles
prediction.
local
total
nitrogen
(TN)
top
predictor
near-shore
zone,
other
nitrate
nitrite
(NO23)
or
phosphate
(PO4).
GAM
suggested
had
positive
TN
increase
both
However,
its
water
temperature
(WT)
spatial
heterogeneity.
This
study
provided
new
perspective
scale
shallow
lake,
taking
heterogeneity
into
account
lake
quality
management
stressed.
Journal of Marine Science and Engineering,
Journal Year:
2024,
Volume and Issue:
12(3), P. 381 - 381
Published: Feb. 23, 2024
Florida
Bay,
a
large
and
shallow
estuary,
serves
as
vital
habitat
for
diverse
range
of
marine
species
holds
significant
environmental,
commercial,
recreational
value.
The
Bay
ecosystem
is
under
extensive
stress
due
to
decades
increased
nutrient
loads.
Based
on
the
Environmental
Fluid
Dynamics
Code
(EFDC),
hydrodynamic
model
was
developed
in
this
study.
calibrated
with
comprehensive
dataset,
including
measurements
over
7
years
from
34
tidal
stations,
42
current
14
temperature
salinity
stations.
Key
findings
include
following:
(1)
bay
exhibits
shift
regime,
transitioning
macro-tidal
western
region
micro-tidal
central
eastern/northeast
regions;
(2)
local
winds
subtidal
variations
coastal
ocean
are
primary
drivers
processes
eastern
(3)
changes
primarily
controlled
by
three
processes:
net
supply
freshwater,
that
drive
mixing
within
estuary
(e.g.,
wind,
topography,
currents),
exchange
ocean.
This
essential
providing
tool
address
environmental
challenges
sustain
bay’s
health.
Industrial Crops and Products,
Journal Year:
2022,
Volume and Issue:
187, P. 115475 - 115475
Published: Aug. 9, 2022
The
present
work
investigated
the
coupling
pretreatment
of
acid
washing
and
torrefaction
to
address
secondary
cracking
target
products
condensation
intermediates
improved
bio-oil
quality
hydrocarbon
selectivity
catalytic
fast
pyrolysis
(CFP)
process.
total
yields
in
CFP
increased
from
28.06
wt%
55.31
by
46.29
pretreatment.
resulted
fewer
acids
phenols
more
sugars
decreasing
AAEMs.
removal
rate
potassium
was
up
96.7
%,
other
elements
were
above
83
%.
Torrefaction
elevated
C/O
ratio
higher
calorific
value
biomass.
It
could
also
decrease
content
obtained
In
addition,
TG/TGA
results
showed
that
temperature
decreased
weight
loss
Meanwhile,
resolution
two
peaks
DTG
curve.
These
AAEMs
inhibition
elevate
valuable
chemical.
Journal of Marine Science and Engineering,
Journal Year:
2025,
Volume and Issue:
13(2), P. 287 - 287
Published: Feb. 4, 2025
Estuarine
wetlands
are
the
transition
zone
between
marine,
freshwater,
and
terrestrial
ecosystems
more
ecologically
fragile.
In
recent
years,
spread
of
exotic
vegetation,
specifically
Spartina
alterniflora,
in
Yellow
River
estuary
has
significantly
encroached
upon
habitats
native
species
such
as
Phragmites
australis,
Suaeda
glauca
Bunge,
Tamarix
chinensis
Lour.
With
advances
land
prediction
modeling,
predicting
wetland
vegetation
distribution
can
aid
management
decision-making
for
ecological
restoration.
We
selected
core
area
study
object
coupled
hydrological
model
MIKE
21
with
PLUS
to
predict
potential
future
invasive
dominant
region.
(1)
Based
on
fine
classification
results
from
satellite
images
GF1/G2/G5,
we
gained
an
understanding
changes
types
reserve
2018
2020.
(2)
Using
public
data
ERA5
GEO
input
basic
environmental
data,
using
provide
high-spatial-resolution
hydrodynamic
parameters
driver,
modeled
spatial
various
Dongying
under
different
artificial
restoration
measures.
(3)
predicted
2022
typical
region,
used
GF6
actual
distribution,
compared
obtained
a
kappa
coefficient
0.78;
values
highly
consistent
true
values.
This
combines
based
hyperspectral
remote
sensing,
construction
model,
effect
species,
providing
reference
constructing
optimizing
estuarine
wetlands.
It
also
allows
scientific
effective
delta
