The Science of The Total Environment,
Год журнала:
2024,
Номер
946, С. 174317 - 174317
Опубликована: Июль 1, 2024
Lignin
is
an
abundant
and
recalcitrant
biopolymer
of
major
relevance
as
soil
organic
matter
(SOM)
component
playing
a
significant
role
in
its
stabilization.
In
this
work,
factorial
field
experiment
was
established,
where
three
climatic
treatments
(W,
warming;
D,
drought;
W
+
warming
drought),
mimicking
future
climate
change
scenarios
were
installed
over
five
years
Mediterranean
savannah
"dehesa",
accounting
for
landscape
diversity
(under
the
tree
canopy
open
grassland).
A
combination
analytical
pyrolysis
(Py-GC/MS)
study
biogeochemical
proxies
based
on
lignin
monomers
used
direct
detection
lignin-derived
phenols
to
infer
possible
shifts
dynamics
soil.
total
27
main
methoxyphenols
identified,
exhibiting
different
patterns
proportions,
mainly
driven
by
effect
habitat,
hence
biomass
inputs
SOM.
An
accelerated
decomposition
moieties
–(exhibited
higher
LG/LS
Al/K
Ac
ratios)–
particularly
exacerbated
all
treatments.
There
also
overall
increasing
oxidation
side
chain
syringyl
units,
especially
under
due
alteration
degradation
potential
stimulation
enzyme
activities.
Conversely,
grassland
these
effects
are
slower
since
microbial
community
expected
be
already
adapted
harsher
conditions.
Our
findings
suggests
that
change-related
temperature
moisture
deviations
impact
dehesas
threatening
productive
agroecosystem
affecting
mechanism
carbon
storage.
Proceedings of the National Academy of Sciences,
Год журнала:
2023,
Номер
120(21)
Опубликована: Май 15, 2023
Sustainability
of
agricultural
production
and
mitigation
global
warming
rely
on
the
regeneration
soil
organic
carbon
(SOC),
in
particulate
(POC)
mineral-associated
(MAOC)
forms.
We
conducted
a
systematic
meta-analysis
effects
regenerative
management
practices
SOC,
POC,
MAOC
cropland,
finding:
1)
no-till
(NT)
cropping
system
intensification
increase
SOC
(11.3%
12.4%,
respectively),
(8.5%
7.1%,
POC
(19.7%
33.3%,
respectively)
topsoil
(0
to
20
cm),
but
not
subsoil
(>20
cm);
2)
experimental
duration,
tillage
frequency,
type,
rotation
diversity
moderate
management;
3)
NT
synergized
with
integrated
crop-livestock
(ICL)
systems
greatly
(38.1%)
ICL
(33.1
53.6%).
This
analysis
shows
that
agriculture
is
key
strategy
reduce
C
deficit
inherent
promote
both
health
long-term
stabilization.
Biology and Fertility of Soils,
Год журнала:
2024,
Номер
60(3), С. 263 - 306
Опубликована: Март 11, 2024
Abstract
Essential
soil
functions
such
as
plant
productivity,
C
storage,
nutrient
cycling
and
the
storage
purification
of
water
all
depend
on
biological
processes.
Given
this
insight,
it
is
remarkable
that
in
modeling
these
functions,
various
actors
usually
do
not
play
an
explicit
role.
In
review
perspective
paper
we
analyze
state
art
how
processes
could
more
adequately
be
accounted
for.
We
for
six
different
biologically
driven
clusters
are
key
understanding
namely
i)
turnover
organic
matter,
ii)
N
cycling,
iii)
P
dynamics,
iv)
biodegradation
contaminants
v)
disease
control
vi)
structure
formation.
A
major
conclusion
development
models
to
predict
changes
at
scale
profiles
(i.e.
pedons)
should
better
rooted
underlying
known
a
large
extent.
This
prerequisite
arrive
predictive
urgently
need
under
current
conditions
Global
Change.
Frontiers in Plant Science,
Год журнала:
2024,
Номер
14
Опубликована: Янв. 19, 2024
Soil
organic
carbon
(SOC)
is
the
principal
factor
contributing
to
enhanced
soil
fertility
and
also
functions
as
major
sink
within
terrestrial
ecosystems.
Applying
fertilizer
a
crucial
agricultural
practice
that
enhances
SOC
promotes
crop
yields.
Nevertheless,
response
of
SOC,
active
fraction
hay
yield
nitrogen
phosphorus
application
still
unclear.
The
objective
this
study
was
investigate
impact
nitrogen-phosphorus
interactions
on
fractions
in
alfalfa
fields.
A
two-factor
randomized
group
design
employed
study,
with
two
levels
0
kg·ha
-1
(N
)
120
1
four
(P
),
50
100
2
150
3
).
results
showed
treatments
increased
easily
oxidized
(EOC),
dissolved
(DOC),
particulate
(POC),
microbial
biomass
(MBC)
fields,
duration
application,
reaching
maximum
under
N
P
or
treatments.
increases
EOC,
DOC,
POC,
MBC
content
0–60
cm
layer
field
were
9.11%-21.85%,
1.07%-25.01%,
6.94%-22.03%,
10.36%-44.15%,
26.46%-62.61%
5.51%-23.25%
for
treatments,
respectively.
vertical
distribution
DOC
POC
contents
all
highest
0–20
tended
decrease
increasing
depth
layer.
10–30
DOC/SOC,
MBC/SOC
(excluding
treatment)
POC/SOC
higher
0–40
compared
treatment,
indicating
effectively
improved
fertility,
while
EOC/SOC
DOC/SOC
both
lower
40–60
than
sequestration
potential.
between
0-30
exhibited
sensitivity
index
MBC,
whereas
30-60
had
POC.
This
suggests
indication
changes
due
treatment
shifted
from
increased.
Meanwhile,
except
20–30
20–50
fertilizers
Carbon
management
(CMI)
varying
degrees.
Structural
equation
modeling
shows
indirectly
affect
by
changing
fraction,
primarily
impacted
MBC.
comprehensive
assessment
indicated
optimal
pattern.
In
summary,
potential
agroecosystems,
recommended
rate
most
effective
content,
pool
yield.
