Forest Ecology and Management,
Год журнала:
2023,
Номер
542, С. 121010 - 121010
Опубликована: Май 29, 2023
Wildfire
frequency
and
severity
have
greatly
increased
in
Mediterranean
areas
recent
decades
affecting
ecosystems
functioning
due
to
alteration
the
above-
below-ground
process.
This
study
aimed
investigate
how
wildfire
severity,
medium-term
(2–5
years),
impacts
soil
properties
within
a
Pinus
halepensis
woodland
located
Special
Area
of
Conservation
(SAC)
Natura
2000
network
(IT9130006
-
Pinewoods
Ionian
Arch).
In
2021,
four
years
after
large
2017,
still
exhibited
fire
effects
with
evidence
low,
medium
or
high
burn
different
sites
(named
LBS,
MBS,
HBS,
respectively).
addition,
we
observed
an
area
burnt
at
that
was
invaded
by
Acacia
saligna
(MBSA
site),
fast-growing,
highly
invasive,
drought-tolerant
nitrogen-fixing
plant,
thus
also
examined
combined
effect
A.
on
soil.
We
compared
across
nearby
unburnt
site
(control).
Thickness,
weight
organic
carbon
litter
(L)
fermentation
(F)
layers
were
measured,
alongside
physical,
chemical
biological
underlying
mineral
(0–10
cm).
Our
results
show
destroyed
these
had
not
recovered
(except
for
L-layer
LBS)
consequent
loss
(∼2
t
C
ha−1)
this
pool.
identified
fourfold
increases
N
mineralization
nitrification
rates
all
sites,
regardless
presence,
suggesting
N-cycle
processes.
On
contrary,
total
microbial
biomass
respiration
as
well
most
physical
comparable
between
control
soils.
Principal
Component
Analysis
(PCA)
highlighted
affected
variables
lower
changes
LBS
than
other
Also,
HBS
did
greater
negative
MBS
sites.
is
probably
post-fire
colonization
herbaceous
plants
favoured
complete
destruction
trees.
case,
waiting
natural
vegetation
recovery
can
be
valid
management
option,
but
periodic
monitoring
fire-soil-vegetation
interaction
mainly
avoid
invasive
species
widespread
advocated.
Nature Communications,
Год журнала:
2025,
Номер
16(1)
Опубликована: Янв. 30, 2025
Fires
alter
the
stability
of
organic
matter
and
promote
soil
erosion
which
threatens
fundamental
coupling
biogeochemical
cycles.
Yet,
how
biogeochemistry
its
environmental
drivers
respond
to
fire
remain
virtually
unknown
globally.
Here,
we
integrate
experimental
observations
random
forest
model,
reveal
significant
divergence
in
responses
attributes
fire,
including
carbon
(C),
nitrogen
(N),
phosphorus
(P)
contents
worldwide.
Fire
generally
decreases
C,
has
non-significant
impacts
on
total
N,
while
it
increases
inorganic
N
P,
with
some
effects
persisting
for
decades.
The
are
most
strongly
negative
cold
climates,
conifer
forests,
under
wildfires
high
intensity
frequency.
Our
work
provides
evidence
that
decouples
globally
helps
identify
high-priority
ecosystems
where
critical
components
especially
unbalanced
by
is
management
a
world
subjected
more
severe,
recurrent,
further-reaching
wildfires.
Global Ecology and Biogeography,
Год журнала:
2023,
Номер
33(1), С. 141 - 150
Опубликована: Окт. 24, 2023
Forest
disturbances
are
increasing
around
the
globe
due
to
changes
in
climate
and
management,
deteriorating
forests'
carbon
sink
strength.
Estimates
of
global
forest
budgets
account
for
losses
plant
biomass
but
often
neglect
effects
on
soil
organic
(SOC).
Here,
we
aimed
quantify
conceptualize
SOC
response
different
disturbance
agents
a
scale.
Agricultural and Forest Meteorology,
Год журнала:
2024,
Номер
349, С. 109954 - 109954
Опубликована: Март 5, 2024
Although
forest
fires
are
one
of
the
main
natural
disturbance
types
in
boreal
forests,
there
is
limited
information
regarding
surface
(dominant
Northern
Europe),
and
how
different
severities
could
affect
post-fire
soil
greenhouse
gas
emissions.
The
results
our
study
show
that
fire
severity,
time
since
changes
temperature
were
factors
driving
carbon
dioxide
(CO2)
flux
(forest
floor
ecosystem
respiration)
from
burned
soils.
Approximately
two
hours
after
fire,
CO2
emissions
areas
significantly
higher
compared
to
pre-fire
conditions,
with
high-severity
had
those
low-severity
fires.
Later
(days,
months)
unburned
control
always
emission
values
areas.
In
case
methane
(CH4),
temperatures
CH4
fluxes.
Unburned
sinks
through
entire
measurement
period,
while
immediately
turned
sink
source.
For
nitrous
oxide
(N2O)
measurements,
was
only
factor
affected
N2O
Shortly
increased
both
low-
high-intensity
plots.
Two
days
C
N
content
decreased
O-horizon
within
first
5
cm
mineral
layer,
trend
visible
Samples
collected
four
months
showed
similar
total
as
before
fire.
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(31), С. 13772 - 13782
Опубликована: Июль 26, 2024
Dissolved
organic
matter
(DOM),
the
most
reactive
fraction
of
forest
soil
matter,
is
increasingly
impacted
by
wildfires
worldwide.
However,
few
studies
have
quantified
temporal
changes
in
DOM
quantity
and
quality
after
fire.
Here,
samples
were
collected
Qipan
Mountain
Fire
(3-36
months)
from
pairs
burned
unburned
sites.
contents
characteristics
analyzed
using
carbon
quantification
various
spectroscopic
spectrometric
techniques.
Compared
with
sites,
sites
showed
higher
bulk
components
3
months
fire
but
lower
them
6-36
During
sharp
drop
to
6
fire,
carboxyl-rich
alicyclic
molecule-like
highly
unsaturated
compounds
had
greater
losses
than
condensed
aromatics.
Notably,
consistently
abundances
oxygen-poor
dissolved
black
nitrogen
fluorescent
3-36
particularly
abundance
pyrogenic
C2
(excitation/emission
maxima
<250/∼400
nm)
that
increased
150%
before
gradually
declining.
This
study
advances
understanding
variations
effects
on
different
components,
which
crucial
for
future
postfire
environmental
management.
