Global Change Biology,
Год журнала:
2022,
Номер
29(1), С. 243 - 259
Опубликована: Сен. 28, 2022
Forest
ecosystems
are
important
global
soil
carbon
(C)
reservoirs,
but
their
capacity
to
sequester
C
is
susceptible
climate
change
factors
that
alter
the
quantity
and
quality
of
inputs.
To
better
understand
forest
responses
altered
inputs,
we
integrated
three
molecular
composition
published
data
sets
organic
matter
(SOM)
microbial
communities
for
mineral
soils
after
20
years
detrital
input
removal
treatments
in
two
deciduous
forests:
Bousson
(BF),
Harvard
(HF),
a
coniferous
forest:
H.J.
Andrews
(HJA).
Soil
turnover
times
were
estimated
from
radiocarbon
measurements
compared
with
molecular-level
(based
on
nuclear
magnetic
resonance
specific
analysis
plant-
microbial-derived
compounds)
how
ecosystem
properties
control
biogeochemistry
dynamics.
Doubled
aboveground
litter
additions
did
not
increase
any
forests
studied
likely
due
long-term
priming.
The
degree
SOM
decomposition
was
higher
bacteria-dominated
sites
nitrogen
(N)
availability
while
lower
N-poor
forest.
Litter
exclusions
significantly
decreased
C,
increased
state,
led
adaptation
changes
available
substrates.
Finally,
although
determined
dynamics
its
(HJA),
belowground
appeared
be
more
influential
broadleaf
(BH
HF).
This
synthesis
demonstrates
inherent
regulate
manipulations
at
molecular-level.
Across
studied,
enhance
content,
whereas
reductions
negatively
impacted
concentrations.
These
results
indicate
these
temperate
highly
sensitive
deposition,
which
product
environmental
drivers.
Plant and Soil,
Год журнала:
2022,
Номер
473(1-2), С. 251 - 271
Опубликована: Янв. 8, 2022
Abstract
Backgrounds
and
aims
Litter
protects
the
underlying
soil,
depending
on
litterfall
decomposition,
but
dynamics
of
standing
litter
stock
in
agroforestry
systems
remain
poorly
understood.
We
aimed
to
unravel
effects
quality,
temporal
patterns,
microclimate,
a
possible
home-field
advantage
(HFA)
across
land-use
gradient.
Methods
quantified
litterfall,
stock,
microclimate
during
year
(remnant)
forest,
cacao-based
simple
complex
agroforestry,
cacao
monocultures,
annual
crops
producing
area
Indonesia.
conducted
reciprocal
transfer
experiment,
tested
decomposition
rates
pruning
residues.
Standing
stocks
were
estimated
from
monthly
rates.
Results
Variation
quality
influenced
more
strongly
than
variation
or
HFA.
Lower
monoculture
decreased
decay
rate
compared
systems;
mean
residence
time
was
over
year.
Mixing
high-
low-quality
material
residues
modified
rate,
soil
C
N
changes,
offering
options
for
targeted
management
protection
nutrient
release.
Conclusions
The
seasonal
patterns
relatively
slow
supported
permanence
layer
all
production
systems,
protecting
soil.
Global Ecology and Biogeography,
Год журнала:
2022,
Номер
31(8), С. 1679 - 1687
Опубликована: Май 10, 2022
Abstract
Aim
Fresh
carbon
(C)
inputs
to
the
soil
can
have
important
consequences
for
decomposition
rates
of
organic
matter
(priming
effect),
thereby
impacting
delicate
global
C
balance
at
soil–atmosphere
interface.
Yet,
environmental
factors
that
control
priming
effect
intensity
remain
poorly
understood
a
scale.
Location
Global.
Time
period
1980–2020.
Major
taxa
studied
Soil
intensity.
Methods
We
conducted
dataset
CO
2
effluxes
in
711
pairwise
soils
with
13
or
14
simple
sources
and
without
from
incubation
experiments
which
isotope‐labelled
was
used
quantify
fresh
C‐induced
rather
than
exudate‐induced
priming.
Results
is
predominantly
positive.
texture
content
were
identified
as
most
associated
effects,
sandy
tropical
mid‐latitudes
supporting
highest
intensity,
greater
fine
textures
high
latitudes
maintaining
lowest
effects.
The
negative
association
between
also
indirectly
driven
by
changing
mean
annual
temperature,
net
primary
productivity,
fungi
:
bacteria
ratio.
Using
this
information,
we
generated
map
found
lower
higher
latitudes.
Main
conclusions
Global
patterns
be
predicted
using
data,
playing
predominant
role
explaining
These
effects
climate,
vegetation
microbial
properties.
present
first
atlas
advance
our
knowledge
on
potential
mechanisms
underlying
are
integral
improving
climate
change
dynamics
components
Earth
System
models.
Microbiology Spectrum,
Год журнала:
2023,
Номер
11(2)
Опубликована: Март 23, 2023
Loss
of
multifunctional
microbial
communities
can
negatively
affect
ecosystem
services,
especially
forest
soil
nutrient
cycling.
Therefore,
exploration
the
genomic
potential
communities,
particularly
their
constituting
subcommunities
and
taxa
for
cycling,
is
vital
to
get
an
in-depth
mechanistic
understanding
better
management
ecosystems.
