Agronomy,
Год журнала:
2024,
Номер
14(12), С. 3036 - 3036
Опубликована: Дек. 19, 2024
Incorporation
of
plant
residues
in
soil
affects
microbial
community
structure
and
ecological
function,
which
can
improve
fertility.
It
is
reported
that
substrate
qualities
could
regulate
keystone
taxa
their
interactions,
wielding
an
important
effect
on
nutrient
cycling
ecosystems,
such
as
labile
phosphorus
(P)
transformation.
However,
there
little
understanding
the
specific
mechanisms
governing
P’s
availability
acidic
soils
following
incorporation
various
qualities.
In
this
210-day
incubation
experiment,
two
high-quality
pumpkin
stover
mango
branch
one
low-quality
residue
rice
straw,
different
terms
carbon
(C)
content
carbon/phosphorus
ratio
(C/P),
were
separately
mixed
with
soil.
The
aim
was
to
investigate
how
affected
composition,
species,
interaction
patterns
bacteria
fungi,
these
characteristics
altered
P
mineralization
immobilization
processes,
along
availability.
results
showed
adding
significantly
increased
soil’s
available
(AP),
biomass
(MBP),
acid
phosphatase
activity
(ACP),
by
63.7%,
86.7%,
171.7%
compared
control
no
addition,
respectively.
This
explained
both
high
abundance
dominant
(Kribbella)
positive
interactions
among
fungal
species.
Adding
straw
induced
cooperation
within
communities
while
resulting
lower
bacterial
abundances,
thereby
increasing
AP,
MBP,
ACP
less
than
addition
stover.
Moreover,
C
played
a
role
transformation
determined
Therefore,
it
may
be
suitable
incorporate
low
C/P
into
order
enhance
PeerJ,
Год журнала:
2025,
Номер
13, С. e18791 - e18791
Опубликована: Янв. 6, 2025
Grazing
can
alter
the
physicochemical
properties
of
soil
and
quickly
influence
composition
microbial
communities.
However,
effects
grazing
intensity
on
fungal
community
in
different
depth
remain
unclear.
On
Inner
Mongolia
Plateau,
we
studied
treatments
including
no
(NG),
light
(LG),
moderate
(MG),
heavy
(HG),
over
(OG)
surface
(0–20
cm)
subsurface
(20–40
layers.
The
α
-diversity
fungi
decreased
under
grazing.
relative
abundance
Ascomycota
subsoil
was
higher
than
that
topsoil,
while
situation
Basidiomycota
opposite.
This
caused
by
differences
carbon
(C)
environment
for
growth
oligotrophic
copiotrophic
fungi.
In
subsoil,
affected
nutrient
contents
such
as
organic
matter
(SOM)
total
nitrogen
(TN),
resulting
significantly
lower
Ortierellomycota
LG,
HG,
OG
NG.
HG
showed
much
Glomeromycota.
Results
a
multiple
regression
tree
(MRT)
analysis
revealed
TN
nitrate
top-
subsoils,
respectively;
main
driving
factor
regulating
changes
water
content
(SWC)
it
ammonium
subsoil.
results
our
study
indicate
changing
TN,
SWC,
nitrogen,
affects
diversity
structure
provides
empirical
support
coping
with
impact
microbiomes
desert
steppes.
Ecological Processes,
Год журнала:
2025,
Номер
14(1)
Опубликована: Март 12, 2025
Abstract
Background
Nitrogen
(N)
addition
profoundly
alters
soil
phosphatase
activities
and
induces
widespread
microbial
phosphorus
(P)
limitation
in
grassland
ecosystems.
However,
the
long-term
effects
of
different
rates
chemical
forms
N
on
acid
(ACP)
activity
P
availability
remain
unclear.
Here,
based
a
10-year
experiment,
we
investigated
range
(0–50
g
m
−2
yr
−1
)
applied
as
either
(NH
4
2
SO
or
urea
ACP
northern
China
meadow
steppe,
with
without
mowing
management.
Results
We
found
that
remained
unaffected
by
until
certain
thresholds
were
reached
(<
10
for
[(NH
]
<
20
urea),
beyond
which
it
declined
sharply.
exerted
stronger
inhibitory
effect
compared
to
urea,
former
primarily
acting
through
acidification
latter
decrease
bacterial
diversity.
In
contrast,
regimes
did
not
significantly
alter
under
form.
Conclusions
Our
findings
underscore
necessity
accounting
both
when
assessing
atmospheric
deposition
impacts
activity.
These
results
inform
development
management
strategies
mitigate
declines
enzyme
enhance
sustainability
Frontiers in Earth Science,
Год журнала:
2025,
Номер
13
Опубликована: Апрель 7, 2025
Introduction
Altitude-induced
variations
in
hydrothermal
conditions
and
vegetation
affect
the
carbon
(C),
nitrogen
(N),
phosphorus
(P)
contents
both
soil
microbial
biomass.
However,
specific
patterns
of
changes
these
nutrients
their
stoichiometry
response
to
altitudinal
remain
unclear.
Methods
In
this
study,
we
analyzed
biomass
C:N:P
across
three
layers
(0–20,
20–40,
40–60
cm)
subtropical
mountain
ecosystems
on
Daming
Mountain,
South
China.
Results
Our
results
revealed
that
C
content
C:N
ratio
0–20
cm
layer
initially
increased
then
decreased
with
increasing
altitude.
Meanwhile,
P
decreased.
Soil
altitude
all
layers,
whereas
C:P
N:P
ratios
exhibited
opposite
trends.
For
along
gradient,
growth
was
mainly
restricted
by
P,
limitation
being
more
pronounced
at
mid-to-low
altitudes.
C,
N,
were
positively
correlated
ratios,
available
N
(AN),
(AP),
water
(SWC),
but
negatively
bulk
density,
pH
temperature.
contrast,
stoichiometric
or
non-significant
relationships
factors.
Notably,
AN,
AP,
SWC
dominant
factors
affecting
stoichiometry.
Discussion
These
findings
contribute
understanding
nutrient
responses
environmental
ecosystems.
