Journal of Environmental Management,
Journal Year:
2024,
Volume and Issue:
366, P. 121822 - 121822
Published: July 16, 2024
Stand
age
significantly
influences
the
functioning
of
forest
ecosystems
by
shaping
structural
and
physiological
plant
traits,
affecting
water
carbon
budgets.
Forest
distribution
is
determined
interplay
tree
mortality
regeneration,
influenced
both
natural
anthropogenic
disturbances.
Unfortunately,
human-driven
alteration
presents
an
underexplored
avenue
for
enhancing
stability
resilience.
In
our
study,
we
investigated
how
impacts
resilience
budget
under
current
future
climate
conditions.
We
employed
a
state-of-the-science
biogeochemical,
biophysical,
validated
process-based
model
on
historically
managed
stands,
projecting
their
as
undisturbed
systems,
i.e.,
left
at
evolution
with
no
management
interventions
(i.e.,
forests
are
to
develop
undisturbed).
Such
model,
forced
data
from
five
Earth
System
Models
four
representative
scenarios
one
baseline
scenario
disentangle
effect
change,
spanned
several
classes
European
forests'
context,
each
stand.
Our
findings
indicate
that
Net
Primary
Production
(NPP)
peaks
in
young
middle-aged
(16-
50-year-old),
aligning
longstanding
ecological
theories,
regardless
scenario.
Under
beech
exhibited
increase
NPP
maintained
across
all
classes,
while
remained
constant
rising
atmospheric
CO
BMC Plant Biology,
Journal Year:
2025,
Volume and Issue:
25(1)
Published: Jan. 30, 2025
Study
the
leaf
functional
traits
is
highly
important
for
understanding
survival
strategies
and
climate
adaptability
of
old
trees.
In
this
study,
(over
100
years
old)
mature
trees
(about
50
Pinus
tabulaeformis
in
Loess
Plateau
were
studied,
variation
18
(6
economic,
4
anatomical,
2
photosynthetic
6
physiological
traits)
was
analyzed
to
understand
differences
between
Combined
with
transcriptome
simple
sequence
repeats
(SSR)
techniques,
effects
soil
property
factors
genetic
on
potential
molecular
mechanisms
studied.
Compared
trees,
presented
greater
economic
(except
phosphorus
content),
anatomical
stomatal
density),
superoxide
dismutase
activity)
lower
traits,
their
more
conservative.
The
difference
mainly
driven
by
(common
explanation
rate
67.89%),
independent
effect
(10.09%)
slightly
higher
than
that
(2.88%).
addition,
constructing
weighted
gene
co-expression
networks
analysis
WGCNA),
research
identified
24
candidate
hub
genes
regulate
most
which
are
related
plant
growth
development
stress
response,
can
be
used
further
regulatory
mechanism
analysis.
conclusion,
study
helpful
ecological
P.
tabuliformis
under
background
change
Plateau,
provides
a
theoretical
basis
regulation
protection
Geophysical Research Letters,
Journal Year:
2025,
Volume and Issue:
52(5)
Published: March 4, 2025
Abstract
China
has
made
extensive
afforestation
efforts
over
the
past
40
years.
However,
ecosystem
models
simulate
only
modest
vegetation
enhancement,
creating
a
significant
disparity
between
documented
reforestation
and
model‐based
simulations.
This
fundamental
mismatch
remains
largely
unexplored.
Here,
we
conducted
comprehensive
analysis
using
diverse
observation
data
to
identify
determinant
within
Dynamic
Global
Vegetation
Models
(DGVMs)
that
underestimates
growth
in
China.
By
developing
high‐resolution
forest
cover
change
set,
found
LUH2‐GCB,
common
land
use
input
for
DGVMs,
causes
underestimate
afforestation.
With
neighborhood
comparison
analysis,
quantitively
demonstrated
predominant
role
of
underestimated
lowering
leaf
area
index
(LAI)
trends.
Overall,
DGVMs
China's
by
an
average
26.88%,
leading
29.46%
underestimation
LAI
increase.
Our
findings
confirm
greening
trend
highlight
need
improved
representation
DGVMs.
Frontiers in Forests and Global Change,
Journal Year:
2022,
Volume and Issue:
5
Published: May 12, 2022
Old
growth
is
a
critical
stage
in
many
forest
types
globally.
It
has
key
ecological
roles
including
biodiversity
conservation,
carbon
storage
and
the
provision
of
services
such
as
water
production.
The
extent
old
been
declining
ecosystems
around
world,
with
major
ecosystem
service
consequences.
Important
insights
about
declines,
well
structure,
function
conservation
forest,
can
be
gained
from
detailed
cross-sectional
longitudinal
studies
different
age
cohorts
within
given
ecosystem.
In
this
review
article,
we
outline
into
characteristics
of,
threats
to
forests,
using
Mountain
Ash
(
Eucalyptus
regnans
)
forests
Central
Highlands
Victoria,
south-eastern
Australia
case
study.
These
are
dominated
by
tallest
flowering
plants
on
earth
have
subject
several
decades
intense
show
that
characterized
(among
other
features):
giant
trees
(approaching
100
m
tall
sometimes
exceeding
20
circumference),
numerous
hollows,
an
understorey
Acacia
rainforest
trees,
range
plant
animal
species
rare
or
absent
younger
aged
stands,
moist,
nutrient-rich
soils.
area
declined
1.16%
∼141,000
ha
occupied
ash-type
region.
This
up
60
times
less
than
it
was
at
time
European
colonization
∼220
years
ago.
loss
implications
for
bird,
mammal
biodiversity,
production
human
consumption.
main
drivers
decline
recurrent
wildfire,
widespread
clearcutting,
logging-fire
interaction
which
cut
then
regenerated
become
more
flammable
significantly
elevated
risk
burning
high
(stand
replacing)
severity.
Climate
change
also
driver
both
through
elevating
mortality
large
living
underpinning
increase
frequency
severity
wildfire.
interacting
mean
restoring
will
policy
challenge.
We
argue
first
step
must
cease
all
commercial
logging
allow
new
recruited
thereby
expand
estate.
addition,
Government
Victoria
should
revert
past
definition
made
easier
qualify
protection.
Given
there
risks
high-severity
wildfire
existing
estate
highly
young
regrowth
technologies
(such
use
drones
satellites)
needed
rapidly
detect
suppress
ignitions
before
fires
difficult
control.
provided
important
natural
laboratory
understanding
dynamics,
management
forest.
They
helped
generate
some
valuable
general
perspectives
likely
relevant
include:
(1)
value
multi-facetted
quantifying
attributes
to,
(2)
need
carefully
crafted
typically
ecosystem-specific
based
required
develop
(e.g.,
trees),
(3)
importance
rigorous
protection
measures
because
poor
decisions
result
now
take
prolonged
periods
rectify,
(4)
setting
levels
relative
spatial
coverage
remaining
impacts
stressors
driving
decline.
Ecological Processes,
Journal Year:
2024,
Volume and Issue:
13(1)
Published: Feb. 9, 2024
Abstract
Background
Treeline
ecotones
of
Mediterranean
ecoregions
have
been
affected
by
the
increasing
intensity
and
severity
droughts.
Even
though
effect
droughts
on
forest
dynamics
has
widely
documented,
knowledge
is
relatively
scarce
how
extreme
climate
episodes
affect
hydraulic
structure
and,
therefore,
physiology
woody
plants.
The
Andes
experienced
an
uninterrupted
period
drought
since
2010,
including
extremely
dry
year
in
2019
with
approximately
80%
rainfall
deficit.
Here,
we
investigated
shifts
wood
anatomical
physiological
traits
Kageneckia
angustifolia
,
endemic
treeline
species,
response
to
this
period.
Methods
We
evaluated
xylem
plasticity
three
K.
populations
across
their
natural
distribution
(31–35°
SL)
based
(vessel
distribution)
(intrinsic
water-use
efficiency)
variables
tree
rings.
focused
2000–2020
that
corresponds
before
megadrought
(2000–2007),
(ii)
(2008–2018)
(iii)
hyperdrought
(2019–2020).
were
annualized
analyzed
linear
mixed-effects
models.
Results
Our
results
provide
insights
mechanisms
underlying
resilience
forests
persistent
central
Chile.
found
2019–2020
triggered
vessel
size
frequency
increased
safety.
These
significant
occurred
parallel
a
decrease
pit
aperture
area
increase
efficiency,
further
stress.
Conclusions
revealed
coordinated
efficiency
megadrought,
thereby
reducing
vulnerability
failure.
apparent
suggests
adaptation
stress
may
its
ability
tolerate
novel
climatic
conditions
environments
Andes,
although
it
not
clear
whether
these
adaptations
will
be
sufficient
persist
scenarios
predict
intensification
Finally,
our
empirical
evidence
integrating
facilitates
understanding
develop
face
Dendrochronologia,
Journal Year:
2023,
Volume and Issue:
83, P. 126162 - 126162
Published: Dec. 22, 2023
The
world's
forests
are
currently
facing
the
impacts
of
climate
change
and
associated
extreme
events,
which
adversely
affecting
natural
ecosystems
increasing
risks
forest
mortality.
In
Mediterranean
region,
where
water
is
already
a
limiting
factor,
drought
stress
having
severe
impact
on
tree
growth.
Different
species
have
developed
physiological
mechanisms
to
cope
with
drought,
an
increase
in
use
efficiency
has
been
observed
several
drought-tolerant
species.
This
paper
analysed
growth
trends
ecophysiological
responses
four
widespread
(Pinus
pinaster
Aiton,
Pinus
pinea
L.,
halepensis
Mill
Quercus
ilex
L.)
variability,
reserve
Vesuvio
National
Park
(Southern
Italy).
Dendrochronological
analyses
were
used
measure
tree-ring
widths
estimate
basal
area
increments
for
each
Stable
isotope
δ13C
performed
calculate
intrinsic
annual
scale
Climate-growth
relationships
suggested
that
temperatures,
particular
minimum
temperature,
had
significant
showed
highest
resistance
hot
periods
scarcity
was
halepensis,
presenting
values.
On
other
hand,
found
be
most
susceptible
prolonged
sensitive
changes
precipitation,
resulting
weakest
rates
during
heat
cold
periods.
Our
study
demonstrated
importance
better
understanding
develop
sound
conservation
management
plans.
