Abstract
Cd
contamination,
especially
in
farmland
soil,
can
pose
serious
threats
to
human
health
as
well
ecological
security.
Stabilization
is
an
important
strategy
for
agricultural
soil
remediation.
In
this
study,
a
Cd-resistant
strain
(
Cupriavidus
B-7)
was
isolated
and
loaded
onto
cow
manure
(CDB),
rice
straw
(RSB)
pine
wood
biochar
(PB)
investigate
its
effects
on
stabilization
by
60-day
pot
experiment.
Results
indicated
that
the
B-7-loaded
(labelled
CDBB,
PBB
RSBB)
reduced
CaCl
2
-extractable
43.06–59.78%,
which
significantly
superior
individual
applications
of
B-7
biochar.
Likewise,
physicochemical
properties,
urease,
catalase
phosphatase
activities
were
improved,
indicating
improved
health.
Consequently,
dry
weights
pakchoi’s
shoot
root
increased
938.9–1230.9%
149.1–281.2%,
respectively,
applying
RSBB.
Meanwhile,
accumulation
pakchoi
shoots
decreased
38.06–50.75%.
Notably,
RSBB
exhibited
optimal
performance
growth
promotion
alleviation.
The
structural
equation
model
synergistic
effect
between
B-7.
Our
research
provides
some
new
insights
into
development
strategies
green
sustainable
remediation
Cd-contaminated
soil.
Graphical
Abstract
Biochar
has
a
large
specific
surface
area,
well-developed
pore
structure,
abundant
functional
groups,
and
superior
nutrient
supply
capacity,
which
is
widely
available
environmentally
friendly
with
its
advantages
in
waste
resource
utilization,
heavy
metal(loid)
remediation,
carbon
storage.
This
review
focuses
on
the
interactions
between
biochar
(including
raw
biochar,
(modified/
engineered/
designer
biochar),
composite
biochar)
rhizosphere
during
remediation
of
soil
contaminated
metal(loid)s
(Pb,
As,
Cd,
Hg,
Co,
Cu,
Ni,
Zn,
Cr,
etc.)
effects
these
microbial
communities
root
exudates
(enzymes
low-molecular-weight
organic
acids
(LMWOAs)).
In
terms
microorganisms,
affects
composition,
diversity,
structure
through
nutrients,
provision
colonization
sites,
immobilization
metal(loid)s,
introduction
exogenous
microorganisms.
With
regard
to
exudates,
provides
electron
transfer
support
microorganisms
regulates
secretion
enzymes
resist
oxidative
stress
stimulated
by
ameliorates
acidification
caused
LMWOAs,
promotes
activity
enzymes.
The
roles
mechanisms
soils
are
discussed,
as
well
challenges
metal(loid)-contaminated
soils,
issues
that
need
be
addressed
future
research
foreseen.
Graphical
Abstract
Cd
contamination,
especially
in
farmland
soil,
can
pose
serious
threats
to
human
health
as
well
ecological
security.
Stabilization
is
an
important
strategy
for
agricultural
soil
remediation.
In
this
study,
a
Cd-resistant
strain
(
Cupriavidus
B-7)
was
isolated
and
loaded
onto
cow
manure
(CDB),
rice
straw
(RSB)
pine
wood
biochar
(PB)
investigate
its
effects
on
stabilization
by
60-day
pot
experiment.
Results
indicated
that
the
B-7-loaded
(labelled
CDBB,
PBB
RSBB)
reduced
CaCl
2
-extractable
43.06–59.78%,
which
significantly
superior
individual
applications
of
B-7
biochar.
Likewise,
physicochemical
properties,
urease,
catalase
phosphatase
activities
were
improved,
indicating
improved
health.
Consequently,
dry
weights
pakchoi’s
shoot
root
increased
938.9–1230.9%
149.1–281.2%,
respectively,
applying
RSBB.
Meanwhile,
accumulation
pakchoi
shoots
decreased
38.06–50.75%.
Notably,
RSBB
exhibited
optimal
performance
growth
promotion
alleviation.
The
structural
equation
model
synergistic
effect
between
B-7.
Our
research
provides
some
new
insights
into
development
strategies
green
sustainable
remediation
Cd-contaminated
soil.
Graphical
