Research Square (Research Square),
Год журнала:
2022,
Номер
unknown
Опубликована: Ноя. 22, 2022
Abstract
Despite
the
significant
impacts
of
natural
factors
such
as
rainfall,
topography,
soil
type,
and
river
network
well
agricultural
activities
on
environmental
water
quality,
little
is
known
about
influence
their
temporal
spatial
variations
in
a
fluvial-lacustrine
watershed.
In
this
study,
whole
process
accounting
method
based
export
coefficient
model
(WP-ECM)
was
first
developed
to
quantify
how
distribution
influenced
quality.
A
case
study
performed
typical
area
–Dongting
basin,
China.
The
simulated
results
indicated
that
can
promote
migration
transformation
pollutants
generated
from
watershed
displayed
high
variability.
It
should
be
priority
monitor
areas
with
greater
impact
basin.
Moreover,
cultivated
land
number
pig-breeding
were
positively
correlated
pollutant
discharge,
it
an
important
measures
reduce
control
anthropological
high-impact
areas.
From
perspective
comprehensive
influence,
are
mainly
distributed
Dongting
Lake
district
2005–2010
Xiang
River
2010–2020.
key
strategy
for
controlling
or
reducing
intensity
livestock
breeding
these
high-impacts
areas,
especially
watershed,
quality
entire
Research Square (Research Square),
Год журнала:
2023,
Номер
unknown
Опубликована: Ноя. 20, 2023
Abstract
To
analyze
the
impact
of
karst
landform
types
and
land
use
patterns
on
movement
nitrogen
phosphorus
in
soil
solution,
we
utilized
solution
monitoring
data
from
Huixian
Wetland
Experimental
Area
Li
River
Basin
March
to
December
2021.
The
study
area
was
divided
into
three
categories
based
types,
namely,
non-karst
landforms,
peak-cluster
depressions,
peak-forest
plains.
Additionally,
two
were
considered
patterns,
paddy
fields
uplands.
Single-factor
variance
analysis
Pearson
correlation
employed
examine
transportation
at
different
depths
during
irrigation
non-irrigation
seasons.
results
indicate
that
(1)
concentrations
NO3--N
30
cm,
60
100
cm
exhibited
significant
differences
between
total
(TN)
concentration
a
depth
also
displayed
revealed
positive
TN,
with
coefficient
0.666
(p<0.01).
(2)
downward
migration
distance
varied
among
following
sequence
plains
>
depressions
landforms.
NH4+-N
followed
order
(3)
irrigated
generally
remained
high
level
season.
In
upland
areas,
consistent
pattern
cm.
However,
periods
heavy
rainfall,
anomalous
increases
or
decreases
observed
Research Square (Research Square),
Год журнала:
2022,
Номер
unknown
Опубликована: Ноя. 22, 2022
Abstract
Despite
the
significant
impacts
of
natural
factors
such
as
rainfall,
topography,
soil
type,
and
river
network
well
agricultural
activities
on
environmental
water
quality,
little
is
known
about
influence
their
temporal
spatial
variations
in
a
fluvial-lacustrine
watershed.
In
this
study,
whole
process
accounting
method
based
export
coefficient
model
(WP-ECM)
was
first
developed
to
quantify
how
distribution
influenced
quality.
A
case
study
performed
typical
area
–Dongting
basin,
China.
The
simulated
results
indicated
that
can
promote
migration
transformation
pollutants
generated
from
watershed
displayed
high
variability.
It
should
be
priority
monitor
areas
with
greater
impact
basin.
Moreover,
cultivated
land
number
pig-breeding
were
positively
correlated
pollutant
discharge,
it
an
important
measures
reduce
control
anthropological
high-impact
areas.
From
perspective
comprehensive
influence,
are
mainly
distributed
Dongting
Lake
district
2005–2010
Xiang
River
2010–2020.
key
strategy
for
controlling
or
reducing
intensity
livestock
breeding
these
high-impacts
areas,
especially
watershed,
quality
entire
