Retention of harvest residues promotes the accumulation of topsoil organic carbon by increasing particulate organic carbon in a Chinese fir plantation
Forest Ecosystems,
Год журнала:
2024,
Номер
11, С. 100229 - 100229
Опубликована: Янв. 1, 2024
As
commonly
used
harvest
residue
management
practices
in
subtropical
plantations,
stem
only
harvesting
(SOH)
and
whole
tree
(WTH)
are
expected
to
affect
soil
organic
carbon
(SOC)
content.
However,
knowledge
on
how
SOC
its
fractions
(POC:
particulate
carbon;
MAOC:
mineral-associated
carbon)
respond
different
managements
is
limited.
In
this
study,
a
randomized
block
experiment
containing
SOH
WTH
was
conducted
Chinese
fir
(Cunninghamia
lanceolata)
plantation.
The
effect
of
topsoil
(0–10
cm)
subsoil
(20–40
determined.
Plant
inputs
(harvest
retaining
mass
fine
root
biomass)
microbial
mineral
properties
were
also
measured.
responses
varied
with
depth.
Specifically,
enhanced
the
content
POC
increases
29.8%
15.9%,
respectively,
compared
WTH.
had
no
significant
effects
MAOC
subsoil.
These
results
indicated
that
increase
induced
by
retention
primary
contributor
accumulation,
especially
topsoil.
affected
through
pathways
plant
(the
biomass
SOH)
exerted
principal
role
accumulation
topsoil,
whereas
played
more
important
regulating
dynamics
than
plants
residues
can
promote
increasing
POC,
thus
suggested
as
an
effective
technology
enhance
sink
for
mitigating
climate
change
plantation
management.
Язык: Английский
Optimizing Carbon Sequestration Potential for Chinese Fir Plantations Using Genetic Algorithm
Forests,
Год журнала:
2024,
Номер
15(9), С. 1524 - 1524
Опубликована: Авг. 29, 2024
Carbon
sequestration
management
of
plantation
forests
has
become
an
important
topic
in
the
current
context
vigorously
promoting
carbon
peaking
and
neutrality
goals
will
be
goal
task
forest
industry
for
a
long
time.
The
objective
this
study
was
to
explore
applications
genetic
algorithm
(GA)
both
near-optimal
thinning
regimes
at
stand
level
planning
regional
under
objectives
sequestration.
This
research
integrates
assessment
technique
with
GA
optimization
effectively
enhance
within
forests.
Results
indicate
that
density
effect
model
accurate
reliable
method
(R2
=
0.8701,
RMSE
7.548).
approach
is
efficient
regime
appropriate
schedule
In
area,
38,045.71
t,
15
years
from
2016
2030,
20
Chinese
fir
stands
should
meet
annual
constraint
condition
not
less
than
50
t.
A
decision
based
on
provides
theoretical
basis
technical
support
compilation
plan
scales
operation
Язык: Английский
Carbon Sequestration Characteristics of Typical Sand-Fixing Plantations in the Shiyang River Basin of Northwest China
Forests,
Год журнала:
2024,
Номер
15(9), С. 1548 - 1548
Опубликована: Сен. 2, 2024
A
predominant
management
practice
to
reduce
wind
erosion
in
the
arid
deserts
of
northwest
China
is
planting
shrubs.
However,
carbon
sequestration
capacity
these
sand-fixing
plantations
has
not
received
much
attention.
In
this
study,
six
typical
(Haloxylon
ammodendron
(C.
A.
Mey.)
Bunge,
Caragana
korshinskii
Kom.,
Tamarix
ramosissima
Ledeb.,
Calligonum
mongolicum
Turcz.,
Artemisia
desertorum
Spreng.
and
Hedysarum
scoparium
Fisch.
&
C.
Shiyang
River
Basin
were
compared
analyzed.
We
evaluated
how
may
vary
among
different
species,
examined
if
plantation
age
or
style
(such
as
additional
construction
sand
barriers,
enclosure)
positively
negatively
influenced
storage
potential
ecosystems.
Our
results
showed
that
all
could
store
carbon,
but
plant
species
controlling
factor
driving
stock
accumulation
plantations.
The
actual
organic
stored
beneath
25-year-old
T.
ramosissima,
H.
ammodendron,
korshinskii,
scoparium,
was
45.80,
31.80,
20.57,
20.2,
8.24
and1.76
Mg
ha−1,
respectively.
Plantations
using
a
clay–sand
barrier
had
1.3
times
only
used
wheat
straw
barriers.
Similarly,
enclosed
1.4
unenclosed
Plantation
greatly
impacts
capacity.
three
greater
than
3-year
plantation.
conclude
while
afforesting
areas,
should
be
prioritized,
priority
also
given
enclosure.
Язык: Английский