Authorea (Authorea),
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 20, 2024
Burning
histories
derived
from
charcoal
preserved
in
sediment
archives
offer
scope
to
reconstruct
past
climate
and
landscape
dynamics.
The
fault-bounded
Aksay
Pond
northwestern
China
24
macrocharcoals
that
when
analysed
for
14C
using
Accelerated
Mass
Spectrometry
recorded
three
periods
spanning
two
sigma
error
ranges
of
1053
1379
CE,
1424
1622
CE
1652
1990
CE.
These
formation
span
the
early
middle
stages
Medieval
Climate
Anomaly,
Little
Ice
Age
(LIA),
transition
peak
LIA
Recent
Warming.
record
differs
other
Altai
burning
records
suggesting
region
has
a
complex
history.
Land,
Год журнала:
2024,
Номер
13(3), С. 356 - 356
Опубликована: Март 11, 2024
Arid
central
Asia
(ACA)
is
dominated
by
mid-latitude
westerlies
and
characterized
a
climate
optimum
(a
relatively
humid
that
has
supported
the
development
of
human
culture)
in
clear
contrast
with
monsoonal
during
Holocene.
Significantly,
whether
onset
Holocene
Climate
Optimum
(HCO)
had
an
impact
on
cultural
exchanges
along
ancient
Silk
Road
remains
unknown.
In
this
study,
we
compared
HCO
different
parts
vast
ACA
region
referring
to
variety
previously
established
paleo-moisture/precipitation
records.
Intriguingly,
found
significant
differences
between
western
eastern
ACA.
The
part
(i.e.,
west
Tianshan
Mountains)
mainly
occurred
at
~8
ka
BP
(1
=
1000
cal
yr
BP).
contrast,
~6
northern
Xinjiang
even
as
late
~5
southern
Xinjiang;
delay
2–3
thousand
years
These
results
likely
indicate
time-transgressive
manner
ACA,
namely,
‘early
but
east’.
On
other
hand,
may
have
resulted
inception
wheat
planting
agricultural
civilization
prompted
southward
migration
Afanasievo
culture
after
ka.
Additionally,
initiation
could
provide
environmental
basis
for
spread
millet
area
~4.5
We
speculate
spatial
are
related
temporal
changes
intensity
position
westerly
jet.
Although
increase
insolation
reduction
global
ice
volume
would
led
water
vapor
feeding
around
8
ka,
(namely,
region)
only
become
6
when
were
intensified
became
positioned
south.
Moreover,
delayed
probably
benefited
from
stronger
winds
appeared
5
which
overcome
influence
tall
topography
Mountains.
Therefore,
addition
external
forcing
insolation),
ocean–atmospheric
teleconnection,
regional
topography,
their
connection
system
important
determining
Our
findings
contribute
understanding
spatio-temporal
characteristics
hydroclimate
regions
complex
eco-environmental
systems
diverse
history
activity.
Geophysical Research Letters,
Год журнала:
2025,
Номер
52(9)
Опубликована: Май 2, 2025
Abstract
Fire
activity
reshapes
the
successions
of
forest
and
steppe
ecosystems.
However,
long‐term
fire
history
its
driving
factors
in
Altai
Mountains
remain
poorly
documented
understood.
In
this
study,
we
explore
Holocene
influencing
factors,
based
on
different
sizes
morphologies
charcoals
a
sediment
core
from
Tolbo
Lake
Mountains.
On
millennial‐scale,
was
primarily
regulated
by
moisture‐driven
biomass
availability.
After
∼6000
BP,
increased
precipitation
led
to
higher
enhanced
activity,
with
potentially
human
activities
contribution.
At
centennial‐scale,
lower
frequency
corresponded
cold
climate
events
study.
Ongoing
global
warming
may
increase
risk
fires
region.
