Frontiers in Ecology and Evolution,
Journal Year:
2024,
Volume and Issue:
12
Published: April 11, 2024
Acid
rain
and
nitrogen
deposition
are
emerging
as
global
scale
environmental
issues
due
to
increasing
industrial
emissions
agricultural
pollutants,
which
seriously
impac
t
the
sustainable
development
of
ecosystems.
However,
specific
effects
both
acid
interactions
on
forest
soil
ecosystems,
particularly
relates
nutrient
content
enzyme
activities,
remain
unclear.
Therefore,
we
established
a
simulated
sample
plot
(SR,
NR)
(N)
their
(SRN,
NRN)
in
subtropical
Cunninghamia
lanceolata
(
C.
)
plantation
Yangtze
River
Delta
region
China
investigate
impacts
these
factors
via
correlation
analysis
structural
equation
model
(SEM).
The
results
showed
that
had
stronger
effect
pH
than
plantation,
while
simultaneous
addition
exacerbated
acidification.
Soil
available
potassium,
ammonium
nitrate
responded
more
obviously
deposition,
rain,
significantly
reduced
potassium
content,
increased
content.
Nitric
NAGase
activity,
but
decreased
urease
activity;
single-factor
treatment
arylsulfatase
interaction
general,
ecosystem
single
or
mainly
by
changing
effective
nutrients.
Functional Ecology,
Journal Year:
2021,
Volume and Issue:
35(12), P. 2753 - 2762
Published: Sept. 23, 2021
Abstract
Nitrogen
(N),
phosphorus
(P)
and
acid
deposition
are
co‐occurring
in
many
ecosystems,
likely
with
complex
interactive
effects
on
litter
decomposition.
Few
studies
have
been
conducted
to
distinguish
the
of
these
three
factors
forest
Thus,
we
performed
a
5‐year
decomposition
experiment
N,
P,
addition
temperate
Changbai
Mountain
China,
including
four
types
from
Pinus
koraiensis
,
Quercus
mongolica
Tilia
amurensis
their
mixtures.
Our
results
showed
that
consistently
reduced
rate,
irrespective
nutrient
or
types.
In
contrast,
N
P
had
less
impact
Litter
rate
linearly
decreasing
soil
pH,
but
positively
increased
availability.
No
relationship
was
found
between
availability
Soil
enzyme
activity
played
key
role
regulating
response,
such
as
phosphatase,
xylosidase,
N‐cacetyl‐b‐D‐glucosaminidase
α‐1,4
glucosidase.
Besides,
low‐quality
(i.e.
high
C
concentration,
C:N
C:P
ratio)
amplified
negative
effect
acidification
This
study
suggests
decelerates
forests,
which
is
independent
The
intensifying
continuous
future
will
greatly
reduce
return
soil,
increasing
risk
multiple
limitation.
A
free
Plain
Language
Summary
can
be
within
Supporting
Information
this
article.
Journal of Ecology,
Journal Year:
2022,
Volume and Issue:
110(6), P. 1376 - 1389
Published: March 26, 2022
Abstract
To
evaluate
how
increased
anthropogenic
nutrient
inputs
alter
carbon
cycling
in
grasslands,
we
conducted
a
litter
decomposition
study
across
20
temperate
grasslands
on
three
continents
within
the
Nutrient
Network,
globally
distributed
enrichment
experiment
We
determined
effects
of
addition
experimental
nitrogen
(N),
phosphorus
(P)
and
potassium
plus
micronutrient
(K
μ
)
common
tree
leaf
long‐term
(maximum
7
years;
exact
deployment
period
varied
sites).
The
use
higher
order
models
allowed
us
to
distinguish
between
nutrients
early‐
versus
late‐stage
decomposition.
Across
continents,
N
(but
not
other
nutrients)
accelerated
early‐stage
slowed
decomposition,
increasing
slowly
decomposing
fraction
by
28%
overall
mean
residence
time
58%.
Synthesis
.
Using
novel,
cross‐site
experiment,
found
widespread
evidence
that
enhances
early
stages
above‐ground
plant
diverse
grassland
sites
but
slows
These
findings
were
corroborated
fitting
data
multiple
have
implications
for
soil
organic
matter
formation.
For
example,
following
enrichment,
microbial
processing
substrates
could
promote
production
transfer
low
molecular
weight
compounds
soils
potentially
enhance
stabilization
mineral‐associated
matter.
By
contrast,
slowing
particulate
(POM)
accumulation.
Such
hypotheses
deserve
further
testing.
Processes,
Journal Year:
2022,
Volume and Issue:
10(11), P. 2425 - 2425
Published: Nov. 16, 2022
Carbon
and
nitrogen
are
the
essential
elements
constituting
living
organisms
closely
coupled
during
biogeochemical
cycles.
Due
to
atmospheric
deposition
increased
agricultural
fertilizer
input,
effect
of
on
sequestration
soil
organic
carbon
(SOC)
is
controversial.
To
facilitate
a
comprehensive
understanding
this
issue,
progress
recent
studies
different
SOC
stabilization
mechanisms
reviewed.
Based
differences
in
stability
fate
particulate
(POC)
mineral-associated
(MAOC),
input
can
increase
POC
inhibit
microbial
decomposition
by
increasing
terrestrial
biomass,
changing
quality
litter
promoting
formation
aggregates.
N
reduces
chemical
MAOC
altering
bonding
mineral–organic
complexes.
This
study
has
promising
implications
for
transformation
promote
sequestration.
Frontiers in Plant Science,
Journal Year:
2025,
Volume and Issue:
15
Published: Jan. 6, 2025
Belowground
bud
banks
(or
bud-bearing
organs)
underlie
grassland
regeneration
and
community
succession
following
ecosystem
perturbations.
Disturbances
of
nitrogen
(N)
enrichment,
overgrazing,
wildfire,
drought
substantially
affect
aboveground
productivity.
To
understand
the
magnitude
direction
disturbances
on
belowground
banks,
we
conducted
a
meta-analysis
46
peer-reviewed
studies
published
from
1980
to
2023.
The
comprises
231
observations
bank
density
per
unit
area
410
tiller.
Results
indicate
that
N
addition
remarkably
promotes
densities
plant
functional
groups
grass
in
banks.
While
negatively
affects
grasses
forbs.
We
found
effects
depend
type,
e.g.,
root
sprouting
buds,
bulb
dormant
buds.
However,
grazing
wildfire
have
no
significant
effect
Our
results
suggest
may
significantly
exert
promotional
inhibitory
effects,
respectively,
critically
altering
regrowth,
succession,
dynamics.
