Global Change Biology,
Journal Year:
2023,
Volume and Issue:
29(16), P. 4652 - 4661
Published: June 9, 2023
Abstract
Soil
pH
is
critically
important
in
regulating
soil
nutrients
and
thus
influencing
the
biodiversity
ecosystem
functions
of
terrestrial
ecosystems.
Despite
ongoing
threat
nitrogen
(N)
pollution
especially
fast‐developing
regions,
it
remains
unclear
how
increasing
N
deposition
affects
across
global
By
conducting
a
meta‐analysis
with
paired
observations
under
addition
control
from
634
studies
spanning
major
types
ecosystems,
we
show
that
acidification
increases
rapidly
amount
most
severe
neutral‐pH
soils.
Grassland
decreases
strongly
high
while
wetlands
are
least
acidified.
extrapolating
these
relationships
to
mapping,
reveal
atmospheric
leads
average
decline
−0.16
past
40
years
regions
encompassing
Eastern
United
States,
Southern
Brazil,
Europe,
South
East
Asia
hotspots
deposition.
Our
results
highlight
anthropogenically
amplified
has
profoundly
altered
chemistry.
They
suggest
functions.
Global Change Biology,
Journal Year:
2023,
Volume and Issue:
29(12), P. 3503 - 3515
Published: March 19, 2023
Abstract
Microbial
necromass
is
an
important
source
and
component
of
soil
organic
matter
(SOM),
especially
within
the
most
stable
pools.
Global
change
factors
such
as
anthropogenic
nitrogen
(N),
phosphorus
(P),
potassium
(K)
inputs,
climate
warming,
elevated
atmospheric
carbon
dioxide
(eCO
2
),
periodic
precipitation
reduction
(drought)
strongly
affect
microorganisms
consequently,
influence
microbial
formation.
The
impacts
these
global
on
are
poorly
understood
despite
their
critical
role
in
cycling
sequestration
(C)
nutrients.
Here,
we
conducted
a
meta‐analysis
to
reveal
general
patterns
effects
nutrient
addition,
eCO
,
drought
amino
sugars
(biomarkers
necromass)
soils
under
croplands,
forests,
grasslands.
Nitrogen
addition
combined
with
P
K
increased
content
fungal
(+21%),
bacterial
(+22%),
total
(+9%),
consequently
leading
SOM
alone
solely
(+10%)
because
decrease
N
limitation
stimulated
more
than
growth.
Warming
necromass,
bacteria
have
competitive
advantages
at
high
temperatures
compared
fungi.
Other
(P
NP
drought)
had
minor
of:
(i)
compensation
by
opposite
processes,
(ii)
short
duration
experiments
slow
turnover.
Future
studies
should
focus
on:
stronger
response
warming
that
fungi,
contribution
accumulation
stability
NPK
fertilization,
thereby
for
negative
feedback
warming.
Global Change Biology,
Journal Year:
2023,
Volume and Issue:
29(16), P. 4652 - 4661
Published: June 9, 2023
Abstract
Soil
pH
is
critically
important
in
regulating
soil
nutrients
and
thus
influencing
the
biodiversity
ecosystem
functions
of
terrestrial
ecosystems.
Despite
ongoing
threat
nitrogen
(N)
pollution
especially
fast‐developing
regions,
it
remains
unclear
how
increasing
N
deposition
affects
across
global
By
conducting
a
meta‐analysis
with
paired
observations
under
addition
control
from
634
studies
spanning
major
types
ecosystems,
we
show
that
acidification
increases
rapidly
amount
most
severe
neutral‐pH
soils.
Grassland
decreases
strongly
high
while
wetlands
are
least
acidified.
extrapolating
these
relationships
to
mapping,
reveal
atmospheric
leads
average
decline
−0.16
past
40
years
regions
encompassing
Eastern
United
States,
Southern
Brazil,
Europe,
South
East
Asia
hotspots
deposition.
Our
results
highlight
anthropogenically
amplified
has
profoundly
altered
chemistry.
They
suggest
functions.
