During
natural
succession,
there
are
decreases
in
the
concentrations
of
toxic
and
harmful
substances
soil.
Although
environmental
conditions
improved,
resulting
spatial
distribution
pollutants
soil
remains
unclear.
Detection
final
heavy
metals
would
enable
pollutant
migration
transformation
be
better
understood,
thereby
supporting
restoration
safety
risk
assessment
mining
areas.
In
this
study,
23
were
measured
at
various
stages
succession
different
layers
during
an
abandoned
area.
Variations
metal
among
vertical
levels
determined.
The
lead
(Pb),
zinc
(Zn),
cadmium
(Cd)
first
increased
then
decreased
succession;
they
mainly
distributed
surface
layer
late
stage
succession.
ferrophilic
(i.e.,
copper
[Cu]
nickel
[Ni])
significantly
total
amount
direction
was
influenced
by
cation
exchange
capacity
(CEC)
stratification
(FC),
which
affected
indirectly
modifying
their
magnetic
susceptibility
(MC).
At
(Stage)
positively
correlated
with
soil,
effects
carbon
(TC)
humic
acid
(HA)
Generally,
migrated
to
upper
strongly
physical
chemical
properties
These
findings
provide
a
scientific
basis
for
understanding
plant
community
on
improvement
Land Degradation and Development,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 10, 2024
ABSTRACT
Phytostabilization,
a
key
strategy
in
addressing
heavy
metal
contamination,
faces
challenges
regions
with
frequent
temperature
fluctuations.
The
arise
from
the
impact
of
variations
on
microbial
activity,
plant
metabolism,
and
bioavailability.
Acknowledging
sensitivity
soil
dynamics,
amendments,
ecological
interactions
to
underscores
importance
considering
these
factors
for
effective
phytostabilization
strategies
dynamic
environmental
conditions.
aim
this
study
is
explore
effect
assisted
diatomite,
halloysite,
biochar
without
freeze–thaw
conditions
stability
(as
distribution
patterns),
activity
dehydrogenase
DHA).
experiment
comprised
two
variants.
In
first,
conducted
FTC,
Lolium
perenne
seeds
were
sown
pots
filled
contaminated
area,
both
amendments
(3%),
lasting
52
days.
second
variant
replicated
process
16
cycles
(FTC)
extended
duration
116
Results
revealed
that
FTC
alters
metals
compared
cycle.
Diatomite
reduces
Cu
mobility
but
may
potentially
increase
Cd
mobility.
Halloysite
enhances
exchangeability,
restricts
mobility,
increases
Pb
retention
stable
form.
Biochar
exhibits
mixed
effects
showcasing
influence
amendments.
As
vital
indicator,
DHA
responds
dynamically
varying
temperatures.
applied
seem
mitigate
adverse
by
supporting
DHA.
Notably,
halloysite
more
favorable
while
diatomite
showcase
enhanced
stimulatory
post‐FTC.
It
emphasises
need
nuanced
understanding
temperature–microbe
role
enhancing
sustainability
metal‐contaminated
environments.
During
natural
succession,
there
are
decreases
in
the
concentrations
of
toxic
and
harmful
substances
soil.
Although
environmental
conditions
improved,
resulting
spatial
distribution
pollutants
soil
remains
unclear.
Detection
final
heavy
metals
would
enable
pollutant
migration
transformation
be
better
understood,
thereby
supporting
restoration
safety
risk
assessment
mining
areas.
In
this
study,
23
were
measured
at
various
stages
succession
different
layers
during
an
abandoned
area.
Variations
metal
among
vertical
levels
determined.
The
lead
(Pb),
zinc
(Zn),
cadmium
(Cd)
first
increased
then
decreased
succession;
they
mainly
distributed
surface
layer
late
stage
succession.
ferrophilic
(i.e.,
copper
[Cu]
nickel
[Ni])
significantly
total
amount
direction
was
influenced
by
cation
exchange
capacity
(CEC)
stratification
(FC),
which
affected
indirectly
modifying
their
magnetic
susceptibility
(MC).
At
(Stage)
positively
correlated
with
soil,
effects
carbon
(TC)
humic
acid
(HA)
Generally,
migrated
to
upper
strongly
physical
chemical
properties
These
findings
provide
a
scientific
basis
for
understanding
plant
community
on
improvement
