Current Research in Environmental Sustainability,
Journal Year:
2023,
Volume and Issue:
5, P. 100214 - 100214
Published: Jan. 1, 2023
Soil
organic
carbon
(SOC),
mineralization
and
microbial
community
structures
were
investigated
at
different
depths
of
farmland
soils
4
years
after
a
single
biochar
amendment.
Biochar
increased
SOC
0-20cm
(10.7%)
20-40cm
(24.9%).
Mineralization
decreased
with
depth
further
12.3%
(0-20cm),
8.5%
(20-40cm)
30.5%
(40-60cm)
Subsoils
selected
for
oligotrophs
(e.g.,
Chloroflexi,
Acidobacteria)
associated
lower
rates
limited
copiotrophs
Proteobacteria,
Ascomycota)
which
exhibit
higher
respiration
rates.
enhanced
in
topsoil
restricted
all
depths.
This
demonstrates
how
increases
stability
by
changing
Geoderma Regional,
Journal Year:
2023,
Volume and Issue:
34, P. e00678 - e00678
Published: July 1, 2023
Soil
organic
matter
(SOM)
plays
an
important
role
in
soil
functions
that
are
crucial
for
sustainable
agriculture.
Understanding
how
agricultural
management
and
properties
affect
SOM
different
depths
would
aid
maintaining
increasing
throughout
the
profile.
We
sampled
a
24
year-old
cultivation
field
experiment
with
conventional
cropping
systems,
adjacent
unmanaged
meadow
to
70
cm
depth
assess
total
carbon
(OC)
stocks
distribution
of
OC
into
mineral-associated
(MAOM),
particulate
(POM)
dissolved
(DOM)
matter.
found
>83%
was
MAOM
fraction,
across
MAOM,
POM
DOM
within
not
strongly
affected
by
management.
Largest
(169
t
ha−1)
together
largest
plant
root
biomass
meadow,
which
highlights
potential
deep-rooting
plants
sequestering
soil.
The
saturation
state
assessed
based
on
clay
ratio
Hassink's
Equation
(Hassink
1997).
seemed
underestimate
accrual
capacity
these
soils
thus
overestimated
state,
whereas
indicated
all
depths,
except
topsoil.
These
varying
results
suggest
applied
metric
should
be
type
-depth
specific.
also
determined
contribution
content
aluminum
iron
oxides
explaining
amount
OC,
MAOM-C
POM-C.
In
contrast
oxides,
well
correlated
any
fractions
below
20
depth,
suggesting
estimating
deeper
texture
alone.
Our
indicate
can
play
transporting
stabilizing
Current Research in Environmental Sustainability,
Journal Year:
2023,
Volume and Issue:
5, P. 100214 - 100214
Published: Jan. 1, 2023
Soil
organic
carbon
(SOC),
mineralization
and
microbial
community
structures
were
investigated
at
different
depths
of
farmland
soils
4
years
after
a
single
biochar
amendment.
Biochar
increased
SOC
0-20cm
(10.7%)
20-40cm
(24.9%).
Mineralization
decreased
with
depth
further
12.3%
(0-20cm),
8.5%
(20-40cm)
30.5%
(40-60cm)
Subsoils
selected
for
oligotrophs
(e.g.,
Chloroflexi,
Acidobacteria)
associated
lower
rates
limited
copiotrophs
Proteobacteria,
Ascomycota)
which
exhibit
higher
respiration
rates.
enhanced
in
topsoil
restricted
all
depths.
This
demonstrates
how
increases
stability
by
changing
