Measure-and-remeasure as an economically feasible approach to crediting soil organic carbon at scale
Environmental Research Letters,
Journal Year:
2025,
Volume and Issue:
20(2), P. 024025 - 024025
Published: Jan. 17, 2025
Abstract
Agricultural
carbon
crediting
predominantly
relies
on
process-based
biogeochemical
models
to
estimate
accrual
of
soil
organic
stock
(SOC).
We
investigate
the
conditions
under
which
it
may
be
economical
SOC
by
measuring
and
remeasuring
SOC,
fewer
assumptions
than
modeling.
analyze
multi-field
measure-and-remeasure
projects
with
two
key
features:
first,
practice
assignment
is
randomized
compare
effect
a
treatment
(e.g.
no
tillage)
control
conventional
tillage);
second,
random
subset
fields
sampled
(two
stage
cluster
sampling)
cost-effectively
measure
changes.
use
statistical
modeling
characterize
estimated
effect,
accounting
for
within-field
between-field
variability
in
change,
as
well
measurement
error.
then
these
statistics
evaluate
how
prices
measurement,
treatment,
credits
influence
economics
projects.
specifically
potential
advantages
larger
spatial
scale
(number
fields)
temporal
(years
before
remeasurement).
find
economies
both
so
that
thousands
fields,
only
about
10%
measured
are
likely
yield
competitive
return
investment
five
years
if
effects
found
research
literature
can
achieved
commercially.
Our
analysis
suggests
cost
effective
market
non-market
at
scale.
Moreover,
provide
valuable
data
independent
validation
commercial
farms
rates
using
field
trials.
next
steps
software
researchers,
credit
registries,
project
developers
move
forward
Language: Английский
Soil organic carbon and total nitrogen after 34 years under conventional and organic management practices at the Rodale Institute Farming Systems Trial
Soil Science Society of America Journal,
Journal Year:
2025,
Volume and Issue:
89(1)
Published: Jan. 1, 2025
Abstract
Long‐term
agricultural
experiments
are
uniquely
positioned
to
capture
the
spatiotemporal
dynamics
of
farming
system
effects
on
soil
profile
properties,
which
typically
require
decades
for
measurable
changes
become
apparent.
Soil
organic
carbon
(SOC)
and
total
nitrogen
(TN)
concentrations
stocks
were
determined
at
a
depth
0–30
cm
in
34th
year
Rodale
Institute
Farming
Systems
Trial
(FST),
Kutztown,
Pennsylvania,
USA.
Only
agriculture
(OA)
with
manure
(OA‐MNR)
plots
had
higher
SOC
than
other
systems
but
only
depths
0–10
10–20
cm,
not
equivalent
mass
(ESM)
basis
30‐cm
depth.
The
ESM
tilled
53.3,
56.2,
61.9
Mg
C
ha
−1
conventional
(CONV),
OA‐legume
(OA‐LEG),
OA‐MNR
systems,
respectively.
TN,
as
well
TN
plots,
both
OA
compared
CONV.
However,
observations
recently
established
reduced
tillage
(RT)
subplots
inconsistent,
least
10
years
may
be
needed
ensure
that
differences
treatment
can
detected.
results
consistent
many
long‐term
field
have
reported
topsoil.
Overall,
was
advantageous
2015
increasing
CONV
OA‐LEG
systems.
Thus,
practices
when
combined
composted
addition
result
increases
stock
long
term.
subsequent
studies
should
assess
implications
input
sourced
from
outside
system.
Further,
samples
taken
several
times
over
multiple
more
comprehensively
management‐induced
properties.
Language: Английский
Climate change adaptation strategy of agricultural sector in Southeast Asia
IOP Conference Series Earth and Environmental Science,
Journal Year:
2024,
Volume and Issue:
1414(1), P. 012066 - 012066
Published: Dec. 1, 2024
Abstract
Tropical
regions
such
as
Southeast
Asia
are
more
vulnerable
to
food
insecurity
because
climate
change
causes
disruptions
in
the
supply
chain.
An
extreme
increase
population
exacerbates
this
condition.
also
often
experiences
weather,
adversely
affecting
farmers’
livelihood.
Climate
that
has
occurred
for
decades
forced
smallholder
farmers
adapt.
This
study
aims
identify
impact
of
and
adaptation
strategies
other
Asian
stakeholders.
The
methods
used
bibliometric
analysis
systematic
literature
review
(SLR).
result
explains
significantly
impacts
decline
agricultural
productivity,
nutrition,
environmental
quality,
resource
instability.
contributed
poverty.
at
upstream
level
include
sustainable
practices,
agroforestry,
circular
economy,
crop-livestock
integration,
forest
recovery,
environmentally-friendly
technology,
changes
sowing
planting
dates,
traditional
water
irrigation
smart
farming.
At
downstream
level,
many
rural
migrate
cities
they
cannot
continue
government
implemented
social
protection
risk
insurance
schemes
farmer
households
level.
Language: Английский