Global Change Biology,
Journal Year:
2024,
Volume and Issue:
30(10)
Published: Oct. 1, 2024
ABSTRACT
Roots
contribute
a
large
fraction
of
CO
2
efflux
from
soils,
yet
the
extent
to
which
global
change
factors
affect
root‐derived
fluxes
is
poorly
understood.
We
investigated
how
red
maple
(
Acer
rubrum
)
and
oak
Quercus
rubra
root
biomass
respiration
respond
long‐term
(15
years)
soil
warming,
nitrogen
addition,
or
their
combination
in
temperate
forest.
found
that
ecosystem
was
decreased
by
40%
under
both
single‐factor
treatments
(nitrogen
addition
warming)
but
not
(heated
×
nitrogen).
This
response
driven
reduction
mass‐specific
warming
treatments.
Mass‐specific
rates
for
species
acclimated
resulting
43%
reduction,
were
affected
N
combined
heated
treatment.
Notably,
warmed
soils
alleviated
thermal
acclimation
returned
control
levels.
Oak
roots
contributed
disproportionately
despite
decrease
as
maintained
enhanced
addition.
In
contrast,
consistently
higher
than
oak,
this
difference
became
critical
treatment,
where
increased,
contributing
significantly
more
relative
Our
findings
highlight
importance
accounting
component
when
assessing
carbon
loss
demonstrate
combining
produces
effects
cannot
be
predicted
studying
these
isolation.
Frontiers in Plant Science,
Journal Year:
2023,
Volume and Issue:
14
Published: March 2, 2023
The
resource
allocation
of
different
component
organs
crops
under
drought
stress
is
a
strategy
for
the
coordinated
growth
crops,
which
also
reflects
adaptability
to
condition.
In
this
study,
maize
variety
namely
‘Denghai
618’,
ventilation
shed,
two
treatment
groups
light
(LD)
and
moderate
(MD),
same
rehydration
after
are
set,
as
well
normal
water
supply
control
in
shed
(CS).
experiment
was
conducted
jointing–tasseling
stage
2021.
effects
on
content
biomass
each
organ
were
analyzed.
results
showed
that
(1)
during
period,
summer
decreased
general,
but
Water
distribution
ratio
(WCDR)
root
increased
by
1.83%–
2.35%.
WCDR
stem
0.52%–
1.40%.
(2)
Under
treatments,
(RB)
33.94%
~
46.09%,
fruit
(FB)
1.46%
2.49%,
leaf
(LB)
8.2%
respectively
LD
MD.
(3)
allometric
model
constructed
sufficient
not
suitable
stress;
exponent
α
lower
than
CS:
CS
(α=1.175)
>
MD
(α
=
1.136)
1.048),
indicates
impact
existing
climate
change
grain
yield
may
be
underestimated.
This
study
helpful
understand
adaptive
strategies
provide
reference
prediction
change.
Chinese Journal of Plant Ecology,
Journal Year:
2024,
Volume and Issue:
48(1), P. 1 - 20
Published: Jan. 1, 2024
There
are
substantial
carbon
exchange
fluxes
among
soil,
vegetation
and
atmosphere
in
the
terrestrial
ecosystems,
which
highly
relevant
to
global
climate
changes.Mycorrhizal
fungi
can
form
symbiotic
associations
with
most
plants,
linking
above-and
below-ground
ecosystems
through
mineral
nutrient-carbon
exchange;
thus,
mycorrhizal
play
crucial
roles
cycling.This
review
summarized
involvements
of
cycling
processes,
including
input,
formation,
stabilization,
decomposition
soil
organic
matter.Studies
have
demonstrated
that
markedly
influence
input
processes
by
alleviating
plant
nutrient
deficiencies,
improving
stress
resistance,
influencing
photosynthesis,
regulating
diversity-productivity
relationships,
subsequently
sustaining
or
primary
productivity
vegetation.A
considerable
proportion
photosynthetic
is
channeled
directly
into
matrix
via
fungal
mycelial
network,
where
it
partly
converted
microbial-derived
carbon,
further
changes
composition
be
stabilized
association
minerals
and/or
forming
aggregates.Mycorrhizal
affect
transformation
matter
mainly
two
mechanisms:
rhizosphere
priming
effects
hyphosphere
biogeochemical
processes.These
mechanisms
involve
secretion
specific
extracellular
enzymes,
shaping
microbial
communities,
induction
chemical
oxidation,
competition
for
limited
resources
(e.g.,
nutrients
water)
free-living
saprotrophs.Considering
sensitivity
environmental
changes,
we
also
discuss
impact
change
factors
on
mediated
fungi.Finally,
proposed
future
research
directions,
emphasizing
a
need
in-depth
studies
role
their
dependence
based
network
experiments
typical
ecosystems.Quantitative
should
strengthened
integrate
ecosystem
models,
technologies
developed
practiced
ecological
restoration
agriculture
facilitate
sequestration
achieving
national
neutrality
goals
combating
changes.
Forests,
Journal Year:
2023,
Volume and Issue:
14(2), P. 286 - 286
Published: Feb. 2, 2023
How
trees
allocate
their
biomass
among
different
components
has
important
implications
for
survival
and
growth
ecosystem
carbon
cycling.
Data
on
the
distribution
pattern
dynamics
of
tree
are
essential
fully
exploiting
forest
sequestration
potential
achieving
goal
neutralization.
However,
there
not
been
enough
research
to-date
spatial
allocation
temporal
in
site
qualities
at
specific
species
scales.
This
study
aimed
to
evaluate
patterns
within
Chinese
fir
examine
how
they
affected
by
age
quality.
A
total
87
were
destructively
sampled
measured
stem,
branch,
leaf,
bark
root
biomass.
The
proportion
difference
stages
(8-40
years)
was
analysed,
influence
process
quality
examined.
Our
results
indicate
that
varied
with
also
Stem
accounted
largest
biomass,
followed
root,
branch
young
forests,
it
bark,
leaf
other
groups.
each
component
all
nonlinearly
changed
age.
stem
increased
increasing
age,
branches
leaves
decreased
first
then
while
Site
had
a
positive
effect
stems
but
negative
bark.
interaction
significant
as
well
Therefore,
obtain
accurate
estimates
stocks,
age-specific
changes
conditions
need
be
considered.
New Phytologist,
Journal Year:
2024,
Volume and Issue:
243(3), P. 1205 - 1219
Published: June 10, 2024
Summary
Decades
of
studies
have
demonstrated
links
between
biodiversity
and
ecosystem
functioning,
yet
the
generality
relationships
underlying
mechanisms
remain
unclear,
especially
for
forest
ecosystems.
Using
11
tree‐diversity
experiments,
we
tested
tree
species
richness–community
productivity
role
arbuscular
(AM)
or
ectomycorrhizal
(ECM)
fungal‐associated
in
these
relationships.
Tree
richness
had
a
positive
effect
on
community
across
modified
by
diversity
mycorrhizal
associations.
In
communities
with
both
AM
ECM
trees,
showed
effects
productivity,
which
could
resulted
from
complementarity
trees.
Moreover,
trees
were
more
productive
mixed
than
assembled
their
own
type
containing
only
significant
whereas
did
not
show
any
Our
study
provides
novel
explanations
variations
diversity–productivity
suggesting
that
tree–mycorrhiza
interactions
can
shape
mixed‐species
Communications in Soil Science and Plant Analysis,
Journal Year:
2024,
Volume and Issue:
56(4), P. 677 - 691
Published: Nov. 10, 2024
The
global
climate
crisis,
exacerbated
by
intensifying
natural
disasters
such
as
floods,
droughts,
rising
sea
levels,
and
forest
fires,
is
rapidly
depleting
our
water
resources.
To
mitigate
this,
sustainable
management
of
arid
regions
crucial,
requiring
the
implementation
effective
storage
techniques,
enhancement
soil
resources,
optimization
utilization.
Drought
stress
poses
a
significant
challenge
to
agriculture,
but
colonization
plants
mycorrhizal
fungi
offers
promising
solution,
enhancing
drought
tolerance
potentially
alleviating
plant
stress.
Complementing
organic
materials
like
biochar,
renowned
for
their
extensive
surface
area
soil-stabilizing
properties,
can
significantly
improve
retention
capacity,
providing
synergistic
approach
when
combined
with
fungi.
Although
mycorrhiza
positively
impacts
resistance
stress,
exact
mechanisms
which
it
facilitates
uptake
transport
tissues
are
still
under
investigation.
Additionally,
water-conserving
irrigation
methods,
particularly
in
semi-arid
regions,
further
enhance
efficiency.
use
cover
crops
agricultural
production
also
reduces
losses
maintaining
coverage
carbon
soil.
Moreover,
understanding
underlying
biochar-amended
soils
crucial
ongoing
research.
Finally,
adopting
scaling
up
Climate-Smart
Agriculture
(CSA)
relatively
innovative
approach,
vital
addressing
resource
challenges
dryland
holds
great
promise
promoting
resilient
practices.
