Abstract
Rapid
industrial
development
increases
soil
contamination
risks
in
suburban
agricultural
areas;
however,
the
extent
and
sources
of
heavy
metal(loid)s
pollution
during
this
process
are
not
well
understood.
This
study
investigated
concentrations,
spatial
distribution,
potential
(As,
Hg,
Cd,
Cr,
Pb)
wheat
samples
from
an
area.
The
found
that
Cd
was
main
pollutant
with
highest
enrichment
factor
15.9
21.6%
having
concentrations
exceeding
China's
limit
0.1
mg/kg.
Soil
As,
Pb
were
concentrated
northwest,
while
Cr
high
southeast.
is
more
severe
than
other
poses
a
slight
ecological
risk.
Monte
Carlo
simulations
showed
hazard
quotient
for
all
five
less
1,
being
highest.
1.35%
children
0.87%
adults
exceeded
carcinogenic
risk
level
0.54%
exhibited
above
threshold
Cr.
Children
most
sensitive
to
exposure
contaminated
areas,
metal(loid)s)
concentration
key
influencing
health
risks.
Source
apportionment
via
PCA-APCS-MLR
model
correlation
analysis
revealed
originated
activities
industrial-traffic.
assessed
pollution,
risks,
sources,
residents
consumption,
providing
evidence
managing
food
safety.
Land,
Год журнала:
2024,
Номер
13(6), С. 876 - 876
Опубликована: Июнь 18, 2024
Human
activities
have
caused
different
degrees
of
land-use
change
on
topographic
gradients,
with
impacts
the
landscape
and
ecosystem.
Effectively
preventing
addressing
ecological
risk
(ER)
achieving
harmonious
coexistence
between
humans
nature
are
important
aspects
sustainable
development.
In
this
study,
we
used
Gansu
Province
as
an
example,
adopted
five
periods
data
in
1980,
1990,
2000,
2010
2020,
geoinformatic
Tupu
method
terrain
distribution
index
to
study
changes
under
then
constructed
assessment
(LERA)
model
based
pattern
analyze
(LER)
spatiotemporal
finally
explored
LER
driving
factors
using
geodetector
model.
The
results
showed
that
(1)
dominant
types
were
unused
land
grassland,
accounting
for
approximately
74%
land.
situation
transferring
changing
each
type
was
more
drastic.
cropland
built-up
easily
found
low
gradient
areas
elevations
small
slopes;
woodland,
grassland
water
high
large
slopes.
(2)
(LERI)
0.018,
0.019,
0.019
0.020,
respectively,
spatial
expressions
northwest
southeast.
Low
concentrated
reserves;
human
interference
natural
environmental
complex
areas.
(3)
Natural
mainly
acted
moderate
position
gradients;
socioeconomic
gradients.
interacted
than
alone
LER.
This
can
provide
a
scientific
basis
ensuring
security
development
topography
geomorphology.
Abstract
Rapid
industrial
development
increases
soil
contamination
risks
in
suburban
agricultural
areas;
however,
the
extent
and
sources
of
heavy
metal(loid)s
pollution
during
this
process
are
not
well
understood.
This
study
investigated
concentrations,
spatial
distribution,
potential
(As,
Hg,
Cd,
Cr,
Pb)
wheat
samples
from
an
area.
The
found
that
Cd
was
main
pollutant
with
highest
enrichment
factor
15.9
21.6%
having
concentrations
exceeding
China's
limit
0.1
mg/kg.
Soil
As,
Pb
were
concentrated
northwest,
while
Cr
high
southeast.
is
more
severe
than
other
poses
a
slight
ecological
risk.
Monte
Carlo
simulations
showed
hazard
quotient
for
all
five
less
1,
being
highest.
1.35%
children
0.87%
adults
exceeded
carcinogenic
risk
level
0.54%
exhibited
above
threshold
Cr.
Children
most
sensitive
to
exposure
contaminated
areas,
metal(loid)s)
concentration
key
influencing
health
risks.
Source
apportionment
via
PCA-APCS-MLR
model
correlation
analysis
revealed
originated
activities
industrial-traffic.
assessed
pollution,
risks,
sources,
residents
consumption,
providing
evidence
managing
food
safety.
