Agronomy,
Journal Year:
2023,
Volume and Issue:
13(7), P. 1783 - 1783
Published: June 30, 2023
The
return
of
crop
residues
and
application
chemical
nitrogen
(N)
can
influence
the
soil
organic
carbon
(SOC)
turnover.
However,
changes
in
response
priming
effect
(PE)
to
N
management
real
farming
systems
are
not
fully
understood.
In
this
research,
we
launched
a
270-day
situ
experiment
three
plots
(N0,
no
N;
N1,
300
kg
hm−2;
N2,
360
hm−2)
on
long-term
maize
farm
order
examine
microbial
mechanisms
that
trigger
PE
presence
13C-labeled
residues.
We
found
N1
decreased
SOC
mineralization
positive
PE,
but
increased
residual
C
use
efficiency
comparison
with
N0
respectively.
be
explained
by
nutrient
mining
theory
for
stoichiometry
decomposition
as
reflected
abundance
oligotrophic
phyla
copiotrophic
N2.
biomass
(MBC),
residue-derived
MBC,
communities’
complexity
were
N2
due
acidification
environment,
enhanced
bacterial
complexity.
keystone
taxa
Vicinamibacteraceae
Gemmatimonas
preferred
recalcitrant
Acidibacter
favored
labile
N1.
fungal
Penicillium,
Sarocladium,
Cladophialophora
exhibited
wide
substrate-use
abilities
N0,
Our
research
depicts
how
structures
reshaped
through
emphasizes
functions
turnover
systems.
Global Change Biology,
Journal Year:
2025,
Volume and Issue:
31(1)
Published: Jan. 1, 2025
ABSTRACT
Unraveling
how
agricultural
management
practices
affect
soil
biota
network
complexity
and
stability
these
changes
relate
to
processes
functions
is
critical
for
the
development
of
sustainable
agriculture.
However,
our
understanding
knowledge
still
remains
unclear.
Here,
we
explored
effects
intensity
on
complexity,
stability,
multifunctionality,
as
well
relationships
among
factors.
Four
typical
land
use
types
representing
a
gradient
disturbance
were
selected
in
calcareous
red
soils
southwest
China.
The
four
with
increasing
included
pasture,
sugarcane
farmland,
rice
paddy
fields,
maize
cropland.
cohesion,
topological
features
(e.g.,
average
degree,
clustering
coefficient,
path
length,
diameter,
graph
density,
modularity),
variation
degree
used
evaluate
strength
interactions
between
species,
respectively.
results
showed
that
intensive
increased
species
competition
but
decreased
stability.
Soil
microfauna
nematode,
protozoa,
arthropoda)
stabilized
entire
through
top‐down
control.
rather
than
or
biodiversity
predicted
dynamics
multifunctionality.
Specifically,
stable
communities,
both
organism
groups
archaea,
bacteria,
fungi,
arthropoda,
viridiplantae,
viruses),
support
high
In
particular,
had
more
contributions
multifunctionality
microbial
communities.
This
result
was
further
supported
by
analysis,
which
modules
1
4
greater
numbers
explained
Our
study
highlights
should
be
considered
key
factor
improving
sustainability
crop
productivity
context
global
intensification.
Sustainability,
Journal Year:
2023,
Volume and Issue:
15(15), P. 11747 - 11747
Published: July 30, 2023
Soil
health
is
intimately
intertwined
with
ecosystem
services.
Climate
change
negatively
impacts
functioning,
by
altering
carbon
and
nitrogen
biogeochemical
cycles
shifting
nutrient
bioavailability,
thus
hampering
food
production
exacerbating
biodiversity
loss.
services
are
provided
belowground
biota,
as
the
most
abundant
metazoans
on
Earth,
nematodes
key
elements
of
soil
webs
reliable
bioindicators
health.
Here,
we
carry
out
a
literature
review
from
2019,
year
that
Intergovernmental
Panel
Change
published
report
relating
expressing
serious
concerns
effects
climate
land
degradation
sustainability
terrestrial
ecosystems.
We
focus
documenting
discussing
composition
nematode
communities
contributing
to
improving
health,
management
practices
promote
their
presence
limit
soils.
By
recognizing
beneficial
plant-promoting
agents,
could
harness
potential
our
benefit,
catalyze
decomposition
services,
improve
plant
performance,
increase
sequestration.
This
way,
will
contribute
well-balanced
well-managed
system,
making
it
possible
productivity,
guarantee
security,
reduce
yield
gap,
limited
human
footprint
environment.
Geoderma,
Journal Year:
2023,
Volume and Issue:
437, P. 116600 - 116600
Published: July 9, 2023
Soil
nitrogen
(N)
is
a
renewable
resource
of
N
fixed
by
free-living
fixation
(FLNF)
diazotrophs.
Thus,
understanding
the
microbial
driving
mechanism
FLNF
activity
can
aid
in
optimization
input.
However,
role
co-symbiosis
between
diazotrophs
and
arbuscular
mycorrhizal
fungi
(AMF)
at
different
soil
depths
has
been
largely
overlooked,
particularly
karst
ecosystems.
we
investigated
properties
characteristics
diazotroph
AMF
across
depths,
from
topsoil
to
soil-rock
mixing
layer,
based
on
profile.
such
as
organic
matter
ammonium
decreased
with
increasing
depth,
whereas
pH
showed
opposite
trend.
Similarly,
abundance
diversity
were
higher
8–73%
0–20
cm
than
20–40
layer.
Despite
high
topsoil,
was
30%
layer
cm.
The
co-occurrence
network
analysis
revealed
strengthening
cooperative
relationship
taxa
via
an
increase
number
unique
taxa.
A
structural
equation
model
indicated
that
depth
improves
due
mutualistic
cooperations
taxa,
Bradyrhizobium
unclassified
Racocetra.
This
study
provides
novel
insights
into
interspecific
interactions
AMF,
rather
their
diversity,
which
found
be
most
important
factors
Consequently,
roles
biotic
influencing
mutually
beneficial
regulating
should
considered
during
vegetation
recovery
fragile
region.
