Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: April 17, 2024
Abstract
To
scrutinize
the
spatial
distribution
attributes
of
soil
heavy
metal
content
and
discern
its
pollution
status
within
expanse
Wulongdong
National
Forest
Park,
a
meticulous
investigation
is
imperative.
Three
altitude
gradients
900,
1000,
1069
m
were
selected
on
shady
sunny
slopes
total
300
sample
points
collected.
Soil
samples
collected
in
layers,
contents
seven
elements,
Cr,
Cd,
Hg,
Ni,
Se,
As,
Pb,
measured.
With
regard
to
national
element
background
values,
single
factor
index
method,
Nemerow
load
employed
undertake
thorough
assessment
pollution.
(1)
The
elements
Pb
0–20
cm
layer
Park
are
lower
than
value
Henan
value;
Cd
Hg
exceed
value.
2.2
times
2.92
value,
2.75
9.5
respectively;
Ni
but
higher
1.03
content.
coefficients
variation
all
greater
50%,
among
which
shows
extreme
variation,
remaining
six
highly
variable.
(2)
In
same
layer,
Cr
As
slopes,
generally
slopes.
On
decrease
with
increasing
altitude,
Se
increases
altitude;
while
increase
deepening
decreases
other
have
no
obvious
regularity
different
slope
directions,
altitudes
layers.
(3)
evaluation
results
show
that
0
~
20c
slope,
heavily
polluted,
moderately
lightly
non-polluted;
five
non-polluting
state.
(4)
method
20
significantly
more
polluted
by
metals
main
pollutants
Hg.
(5)
three
reached
levels,
slightly
or
above
polluted;
polluted.
Heavy
pollution,
