Tree contributions to climate change adaptation through reduced cattle heat stress and benefits to milk and beef production
Global Change Biology,
Journal Year:
2024,
Volume and Issue:
30(5)
Published: May 1, 2024
Abstract
Cattle
heat
stress
causes
billions
of
dollars'
worth
losses
to
meat
and
milk
production
globally,
is
projected
become
more
severe
in
the
future
due
climate
change.
Tree
establishment
pastoral
livestock
systems
holds
potential
reduce
cattle
thus
provide
nature‐based
adaptation.
We
developed
a
general
model
for
impact
trees
on
stress,
which
can
project
under
scenarios
at
varying
spatial
scales.
The
incorporates
key
microclimate
mechanisms
influenced
by
trees,
including
shade,
air
temperature,
humidity,
wind
speed.
conducted
sensitivity
analyses
demonstrate
relative
influence
different
through
how
tree
impacts
are
climatic
context
globally.
Trees
hold
greatest
higher
latitudes
altitudes,
with
minor
benefits
lowland
tropics.
contributions
current
mitigating
change
dairy
beef
herds
Aotearoa—New
Zealand
(A‐NZ)
2070–2080.
were
simulated
contribute
A‐NZ
yields
over
491
million
liters
(lower
CI
=
112
liters,
upper
850
liters),
8316
tonnes
2431
tonnes,
13,668
tonnes)
annually.
total
economic
contribution
existing
was
valued
$US
244
58
million,
419
million).
Our
findings
importance
landscapes
suggest
that
strategic
be
valuable
adaptation
option
reducing
next
few
years
critical
capacity
benefit
decades.
Language: Английский
Carbon stocks and sequestration from small tree patches in grassland landscapes in Aotearoa-New Zealand
Climate Policy,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 19
Published: Nov. 22, 2024
Small
patches
of
trees
add
structural
heterogeneity
to
grassland
landscapes,
support
biodiversity,
and
provide
essential
ecosystem
services
including
carbon
stocks
sequestration,
erosion
control,
shade
provision.
In
Aotearoa-New
Zealand
(A-NZ)
small
have
further
cultural
significance
within
Te
Ao
Māori
–
the
worldview
indigenous
people.
However,
economic
pressures
driven
management
grasslands
either
towards
removing
tree
cover
enhance
agricultural
productivity,
or
large-scale
conversion
production
forests.
Protecting
existing
trees,
encouraging
their
establishment
across
is
challenging
since
current
extent
benefits
these
not
known.
This
study
demonstrates
critical
contributions
(those
less
than
one
hectare
in
area)
A-NZ
landscapes.
Using
a
high-resolution
dataset,
we
mapped
1,639,015
A-NZ,
with
covering
total
land
area
between
185,589
ha
187,928
ha.
We
used
probabilistic
simulation
approach
estimate
annual
revealing
potential
aboveground
stock
11.6
29.3
million
tonnes
(Mt)
an
biomass
sequestration
0.3
Mt
0.8
Mt.
Despite
exclusion
from
national
emissions
market,
valuation
suggests
liability
$NZ
86.9
8.6
billion
(€47.9
€4.7.
billion)
if
were
felled,
market
value
2.0
237.6
(€1.1
130.9
million)
annually
for
sequestration.
Existing
policies,
afforestation
incentives,
do
encourage
protection
trees.
Significant
policy
adjustments
are
required
recognize,
protect,
incentivize
conservation
Language: Английский