Climate,
soil,
and
competition
factors
jointly
drive
tree
growth
variability
at
local
regional
scale.
However,
the
comprehensive
interaction
of
these
their
combined
effects
on
responses
within
environment
remains
poorly
explored
in
current
research.
Using
a
detailed
forest
inventory
dataset
Québec,
we
examined
red
maple
(Acer
rubrum
L.),
sugar
saccharum
Marshall),
yellow
birch
(Betula
alleghaniensis
Britton),
white
papyrifera
balsam
fir
(Abies
balsamea
Mill),
black
spruce
(Picea
mariana
as
function
for
light
space
with
neighboring
trees,
climate
soil-related
variables.
Interactions
between
all
variables
were
considered
Bayesian
model
predicting
growth.
The
amount
received
by
trees
was
main
explaining
except
coniferous
species
which
influenced
mostly
Among
studied
species,
only
exhibited
increased
under
warmer
conditions.
Intraspecific
had
strong
species-specific
impacts,
varying
from
negative
fir,
to
positive
birch.
climate,
played
crucial
role
shaping
patterns,
especially
maple,
that
strongly
responded
combination
factors.
In
general,
also
soil
cation-exchange
capacity
(CEC),
when
higher
CEC
is
coupled
temperatures
precipitation,
spruce.
While
anticipated
conditions
Quebec,
even
most
optimistic
scenarios,
will
have
impact
management
can
mitigate
this
promoting
diversity
more
complex
stand
structures.
Landscape Ecology,
Journal Year:
2025,
Volume and Issue:
40(2)
Published: Jan. 20, 2025
Abstract
Context
The
vegetation
composition
of
northeastern
North
American
forests
has
significantly
changed
since
pre-settlement
times,
with
a
marked
reduction
in
conifer-dominated
stands,
taxonomic
and
functional
diversity.
These
changes
have
been
attributed
to
fire
regime
shifts,
logging,
climate
change.
Methods
In
this
study,
we
disentangled
the
individual
effects
these
drivers
on
forest
southwestern
Quebec
from
1830
2000
by
conducting
retrospective
modelling
using
LANDIS-II
landscape
model.
model
was
run
based
history
reconstructions,
historical
timber
harvest
records,
reanalysis
data.
We
compared
counterfactual
scenarios
excluding
factors
baseline
scenario.
Results
Conclusions
Our
results
indicated
that
harvesting
had
greatest
impact
dynamics
over
past
centuries.
absence
harvesting,
species
abundances
were
largely
maintained,
preserving
key
traits
like
shade
tolerance
contribute
ecosystem
resilience.
Increased
activity
during
settlement
period
contributed
increase
early-successional
aspen
(Populus
tremuloides),
but
played
dominant
role.
Fire
exclusion
no
influence
composition,
suggesting
mesophication
unfolds
longer
timescales
than
those
captured
study.
Climate
change,
characterized
modest
increases
temperature
precipitation,
minor
effect
as
increased
precipitation
might
mitigated
adverse
rising
temperatures.
However,
future
change
is
projected
become
more
significant
driver
composition.
findings
underscore
importance
restoration
continued
research
better
understand
current
changes.
Forest Ecology and Management,
Journal Year:
2024,
Volume and Issue:
555, P. 121731 - 121731
Published: Jan. 31, 2024
Climate,
soil,
and
competition
factors
jointly
drive
tree
growth
variability
at
local
regional
scale.
However,
the
comprehensive
interaction
of
these
their
combined
effects
on
responses
within
environment
remains
poorly
explored
in
current
research.
Using
a
detailed
forest
inventory
dataset
Québec,
we
examined
balsam
fir
(Abies
balsamea
Mill),
black
spruce
(Picea
mariana
red
maple
(Acer
rubrum
L.),
sugar
saccharum
Marshall),
white
birch
(Betula
papyrifera
yellow
alleghaniensis
Britton),
as
function
for
light
space
with
neighboring
trees,
climate
soil-related
variables.
Interactions
between
all
variables
were
considered
Bayesian
model
predicting
growth.
The
amount
received
by
trees
was
main
explaining
except
coniferous
species
which
influenced
mostly
Among
studied
species,
only
exhibited
increased
under
warmer
conditions.
Intraspecific
had
strong
species-specific
impacts,
varying
from
negative
fir,
to
positive
birch.
climate,
played
crucial
role
shaping
patterns,
especially
maple,
that
strongly
responded
combination
factors.
In
general,
also
soil
cation-exchange
capacity
(CEC),
when
higher
CEC
is
coupled
temperatures
precipitation,
spruce.
While
anticipated
conditions
Quebec,
even
most
optimistic
scenarios,
will
have
impact
management
can
mitigate
this
promoting
diversity
more
complex
stand
structures.
Agricultural and Forest Meteorology,
Journal Year:
2023,
Volume and Issue:
339, P. 109548 - 109548
Published: June 12, 2023
Current
ecological
models
predict
profound
climate
change-related
effects
on
the
natural
disturbance
regimes
of
forests.
Spruce
budworm
(Choristoneura
fumiferana)
(SBW)
is
principal
insect
defoliator
in
eastern
North
America,
and
SBW
outbreaks
have
a
major
impact
structure
function
Canadian
boreal
forest,
as
defoliation
leads
to
decreased
tree
growth,
increased
mortality,
lower
forest
productivity.
become
more
severe
over
last
century
with
changing
climate;
however,
little
known
about
how
fluctuations
affect
growth
host
species
during
outbreak
period.
Here
we
evaluate
severity
combined
black
spruce
(Picea
mariana)
that
occurred
between
1968–1988
2006–2017.
We
compiled
dendrochronological
series
(2271
trees),
(estimated
by
observed
aerial
defoliation),
data
for
164
sites
Québec,
Canada.
used
linear
mixed
effect
model
determine
impacts
climatic
parameters,
cumulative
(of
previous
five
years),
their
coupled
basal
area
growth.
At
maximum
severity,
was
reduced
14%–18%
years.
This
response
affected
climate:
warmer
summer
minimum
temperatures
higher
moisture
index
further
11%
4%,
respectively.
In
contrast,
preceding
year's
spring
(9%)
(7%)
attenuated
negative
effect.
study
adds
knowledge
our
landscape-level
understanding
insect–climate
helps
predictions
future
SBW-related
damage
stands
bolster
sustainable
management.
also
recommend
projections
ecosystems
include
several
classes
multiple
scenarios
simulations.
Frontiers in Plant Science,
Journal Year:
2023,
Volume and Issue:
14
Published: Feb. 2, 2023
Larix
principis-rupprechtii
Mayr
(larch)
is
one
of
the
main
afforestation
and
timber
production
species
used
in
North
China.
Climate
change
has
led
to
a
its
suitable
distribution
growth.
However,
impact
climate
on
growth
suitability
not
clear.
In
this
study,
using
forest
resource
inventory
data
spatially
continuous
environmental
factor
(temperature,
precipitation,
topography,
soil)
Hebei
Shanxi
Provinces,
China,
random
model
(RF)
was
simulate
larch
site
index
(SI)
under
three
shared
socioeconomic
pathways
(SSPs:
SSP1-2.6,
SSP2-4.5,
SSP5-8.5)
for
current
future
(2021-2040,
2041-2060
2080-2100).
The
results
revealed
that
(1)
RF
had
excellent
performance
predicting
regional
SI
(R2
=
0.73,
MAE
0.93
m,
RMSE
1.35
m);
(2)
factors
affecting
productivity
were
mean
temperature
warmest
quarter
(BIO10),
elevation
(ELEV),
diurnal
range
(BIO2),
annual
precipitation
(BIO12);
(3)
currently
higher
Bashang
areas
high-altitude
mountains.
characterized
as
unsuitable,
poorly
suitable,
moderately
highly
accounted
15.45%,
42.12%,
31.94%,
10.49%
total
area,
respectively.
(4)
Future
warming
an
obvious
inhibitory
effect
SI,
strengthened
with
increasing
radiation
intensity
year.
(5)
showed
downward
trend
scenarios.
By
end
century,
would
decrease
by
14.14%
15.17%
19.35%
SSP5-8.5.
suitability,
which
can
provide
scientific
basis
management.
Sustainability,
Journal Year:
2024,
Volume and Issue:
16(3), P. 1103 - 1103
Published: Jan. 27, 2024
Nursery
trays
are
essential
agricultural
tools
in
rice
production.
Plastic
nursery
pose
problems
such
as
resource
waste
and
environmental
pollution.
Biomass
seedling
an
effective
way
to
achieve
sustainable
development.
Previous
research
has
been
conducted
on
biomass
tray
molding
equipment
process,
but
the
impact
of
raw
material
ratio
quality
growth
is
still
unclear,
combination
needs
further
optimization.
In
this
study,
we
used
slurry
concentration,
pulp
content,
adhesive
straw
cow
manure
variables.
We
selected
bowl
hole
rate
strong
index
evaluation
indicators,
carried
out
forming
experiments
cultivation
experiments.
The
response
surface
analysis
method
was
optimize
from
perspectives
effect
quality.
results
show
that
when
concentration
30%,
content
20%,
530
g,
mass
2:1;
91.03%,
0.22,
indicating
good
growth.
verification
test
indicate
theoretical
accurate,
model
fitting
good.
These
provide
a
basis
for
preparation
technical
support
achieving
green
development
agriculture.
Forests,
Journal Year:
2022,
Volume and Issue:
13(12), P. 2183 - 2183
Published: Dec. 19, 2022
Forests
are
composed
of
landscape
spatial
units
(patches)
different
sizes,
shapes,
and
characteristics.
The
forest
pattern
its
trends
closely
related
to
resistance
disturbance,
restoration,
stability,
the
biodiversity
directly
influence
benefits
sustainable
exploitation
resources.
Therefore,
patterns
driving
forces
have
increasingly
attracted
attention
researchers.
present
study
analyzed
temporal
dynamics
woodland
in
typical
hilly
mountainous
areas
southern
China
using
ArcGIS,
index,
morphological
analysis.
Meanwhile,
a
logistic
regression
model
was
used
analyze
drivers
change
Anyuan
County
from
three
aspects:
natural,
geographic
location,
socio-economic
conditions.
total
area
decreased
during
10-year
period,
with
net
decrease
4959.27
ha,
mainly
due
conversion
into
cultivated
land,
garden
construction
land.
Patch
density,
edge
aggregation
index
woodlands
increased
over
time,
indicating
enhanced
fragmentation,
stable
complex
patch
edges,
connectivity.
Conversely,
highest
values
exhibited
decreasing
trends,
decreases
dominant
type.
Morphological
analysis
results
showed
that
core
islet
which
also
indicates
fragmentation.
Forest
is
result
environmental
change,
ecological
processes,
human
geographical
location
social
economy
having
greater
influences
on
change.
Human
activities
such
as
navel
orange
cultivation,
returning
land
forest,
occupation
for
were
major
factors
provide
reference
could
facilitate
management
resource
utilization.