The
thin
soil
layers
and
uneven
distribution
in
karst
areas
facilitate
phosphorus
migration
to
groundwater,
posing
a
significant
threat
water
source.
This
study
collected
groundwater
surface
samples
May,
August,
October,
December
2022
from
the
Gaoping
River
Basin
Zunyi
City.
Spatial
analysis
revealed
highest
mean
concentrations
occurred
farmland
construction-farmland
zones,
respectively.
Correlation
indicated
positive
contributions
agricultural
land
negative
forest
land;
both
construction
lands
positively
influenced
concentrations.
results
of
isotope
mixing
end-element
model
showed
that
activities
were
primary
source
phosphate
forest-farmland
zones
(contribution
rates
69.6
±
19.6%
59.0
4.0%
respectively).
In
contrast,
urban
was
main
zone
48.9
10.4%).
For
water,
predominant
sources
56.9
7.10%
54.1
25.0%,
conclusion,
controlling
local
bodies
should
focus
on
managing
use
related
human
activities,
including
regulating
sewage
discharge
fertilizer
usage.
Remote Sensing,
Год журнала:
2023,
Номер
15(18), С. 4611 - 4611
Опубликована: Сен. 20, 2023
The
water
conservation
service
of
an
ecosystem
reflects
the
sustainability
regional
resources
and
is
significant
to
human
survival
sustainable
development.
However,
global
climate
warming
intensified
activities
pose
substantial
challenges
services,
especially
in
alpine
region
with
a
fragile
ecological
environment,
which
more
sensitive
factors
land
use
pattern
changes.
In
this
study,
Qilian
Mountains
(QLM)
was
chosen
as
study
area
investigate
trends
drivers
region.
InVEST
model
used
estimate
QLM
from
2000
2020.
addition,
characteristics
spatiotemporal
variation
were
analyzed
using
combination
Theil–Sen
median
trend
Mann–Kendall
method,
coefficient
variation,
Hurst
exponent,
main
driving
affecting
these
changes
determined
partial
correlation
analysis
contribution
analysis.
conclusions
are
follows:
(1)
predicted
based
on
model’s
yield
module
had
relative
inaccuracy
5.96%,
mean
2020
approximately
78.08
×
108
m3.
(2)
showed
slight
increase
over
whole
region,
change
rate
0.565
mm/a;
yet,
it
distinct
spatial
distribution
characterized
by
“more
east
than
west”.
(3)
various
categories
total
conservation,
highest
lowest,
according
following:
grassland
(62.44%)
>
unutilized
(15.99%)
forest
(11.44%)
cultivated
(9.86%)
construction
(0.45%)
(0.03%).
(4)
Precipitation
exhibited
positive
correlation,
ratios
58.50%
content,
whereas
potential
evapotranspiration
surface
temperature
nonsignificant
negative
2.17%
2.08%,
respectively.
results
can
provide
scientific
reference
for
protection
other
similar
environment
areas.
Water Science & Technology Water Supply,
Год журнала:
2023,
Номер
23(11), С. 4449 - 4465
Опубликована: Окт. 28, 2023
Abstract
Water
quality
is
of
great
significance
to
human
survival
and
development.
It
good
theoretical
value
study
seasonal
water
variation
driving
factors
in
plateau
lakes.
This
paper
studied
the
parameters
different
seasons
their
relationship
with
land
use
climate
Dianchi
Lake,
Yunnan
Province
from
2001
2019.
The
results
show
that
restricting
environment
are
different,
but
basically
close.
multiple
monitoring
stations
showed
a
decreasing
or
insignificant
trend.
In
rainy
season,
temperature
precipitation
were
positively
correlated
most
parameters,
while
effect
was
not
significant
dry
season.
Different
types
have
effects
on
indexes
seasons.
score
higher
season
than
scores
south
middle
Lake
those
north.
this
study,
between
climate,
land,
established,
which
provides
way
for
research
parameters.
The
thin
soil
layers
and
uneven
distribution
in
karst
areas
facilitate
phosphorus
migration
to
groundwater,
posing
a
significant
threat
water
source.
This
study
collected
groundwater
surface
samples
May,
August,
October,
December
2022
from
the
Gaoping
River
Basin
Zunyi
City.
Spatial
analysis
revealed
highest
mean
concentrations
occurred
farmland
construction-farmland
zones,
respectively.
Correlation
indicated
positive
contributions
agricultural
land
negative
forest
land;
both
construction
lands
positively
influenced
concentrations.
results
of
isotope
mixing
end-element
model
showed
that
activities
were
primary
source
phosphate
forest-farmland
zones
(contribution
rates
69.6
±
19.6%
59.0
4.0%
respectively).
In
contrast,
urban
was
main
zone
48.9
10.4%).
For
water,
predominant
sources
56.9
7.10%
54.1
25.0%,
conclusion,
controlling
local
bodies
should
focus
on
managing
use
related
human
activities,
including
regulating
sewage
discharge
fertilizer
usage.
