Abstract
Independent
evidence
from
Europe
and
Asia
shows
that
tree‐ring
stable
isotopes
can
reveal
persistent
long‐term
hydroclimate
trends
are
generally
not
captured
by
more
traditional
dendroclimatic
studies
using
width
or
density.
Since
the
recently
observed
discrepancy
between
flatter
“growth‐dependent”
varying
“growth‐independent”
climate
proxy
data
is
unrelated
to
possible
biases
of
statistical
age‐trend
removal,
I
call
for
a
conceptual
rethinking
predictive
power
different
parameters
reconstructing
variability
on
interannual
multimillennial
timescales.
describe
why
wood
density
measurements
usually
lack
abiotic
signals
ultra‐long
timescales,
whereas
carbon
oxygen
isotopic
ratios
cellulose
capture
environmental
variation
well
beyond
segment
length
individual
samples.
Caution
therefore
advised
when
information
diverse
combined
in
multiproxy
reconstructions
Holocene
aim
reflect
full
range
variability.
This
Perspective
only
emphasizes
paleoclimatic
value
be
obtained
living
relict
wood.
It
also
stresses
need
developing
new
high‐resolution
datasets
species
regions
both
hemispheres
supplement
existing
record.
article
categorized
under:
Paleoclimates
Current
Trends
>
Paleoclimate
Journal of Hydrology Regional Studies,
Journal Year:
2024,
Volume and Issue:
53, P. 101787 - 101787
Published: April 17, 2024
The
Yangtze−Huang−Huai−Hai
River
basin
(3.19
million
km2)
in
China,
which
is
vital
for
China's
economic
development.
We
employed
the
Eulerian
method
to
identify
primary
water
vapor
channels
from
2005
2020,
and
net
budget
over
was
calculated.
Additionally,
Lagrangian
utilized
simulate
transport
trajectories
across
four
seasons,
with
aim
of
investigating
influence
changes
on
precipitation.
Utilizing
both
methods,
findings
indicate
that:
(1)
Precipitation
experienced
a
downward
trend
−3.5
mm·a−1
during
2005−2020,
mainly
spring
(−1.4
mm·a−1)
summer
(−1.7
mm·a−1);
(2)
has
substantial
(−0.9
kg·m−1·s−1·a−1),
(−0.4
kg·m−1·s−1·a−1)
(−0.3
aligns
declining
(3)
Hybrid
Single
Particle
Integrated
Trajectory
Model
demonstrates
that
decrease
long−distance
impacts
basin's
channels.
decline
predominantly
influenced
by
Asia,
Europe,
Africa−Arctic
Ocean
(−0.7
%·a−1),
while
driven
trajectory
Indian
Ocean−South
China
Sea
%·a−1).
This
study
improves
existing
understanding
hydrological
cycle
context
basin,
offers
crucial
scientific
basis
resource
management
regulation.
Earth-Science Reviews,
Journal Year:
2022,
Volume and Issue:
233, P. 104169 - 104169
Published: Sept. 3, 2022
There
is
much
debate
regarding
the
temporal
and
spatial
pattern
of
hydroclimate
variations
on
Tibetan
Plateau
during
Holocene,
focusing
especially
dipolar
precipitation
moisture
between
southern
northern
regions,
multiple
timescales.
Modern
observations
reveal
that
δ18O
in
an
integrated
tracer
atmospheric
processes
Indian
summer
monsoon
(ISM),
East
Asian
(EASM),
westerlies,
which
dominate
climate
Plateau.
Here,
we
summarize
compare
20
Holocene
lacustrine
authigenic
carbonate
records
from
lakes
distributed
across
After
carefully
considering
potential
effects
temperature,
evaporation,
site
elevation,
meltwater
supply,
sources,
eliminate
their
influences
isotopic
composition
lakes,
suggest
long-term
were
dominated
by
sources.
The
values
lake
sediments
central
western
increased
since
early
agrees
with
trend
speleothem
plateau,
as
well
reconstructions
for
region.
Overall,
this
evidence
indicates
substantial
influence
abovementioned
regions.
However,
northeastern
show
a
decreasing
second
half
(after
∼5
ka),
highlighting
operation
different
hydrological
process,
enhanced
availability,
It
has
been
suggested
contribution
westerlies-derived
non-monsoon
season,
depleted
(e.g.,
melting
snow
or
frozen
soil
spring),
responsible
such
variations.
We
propose
interplay
westerlies
was
major
control
hydroclimatic
led
to
variation
other
parts
multi-millennial
timescales
Holocene.
Progress in Physical Geography Earth and Environment,
Journal Year:
2022,
Volume and Issue:
46(6), P. 949 - 967
Published: May 3, 2022
It
is
evident
that
the
origin,
development,
and
expansion
of
agriculture
animal
husbandry
during
Neolithic
Bronze
Age
periods
across
Eurasia
facilitated
increase
world
population
emergence
ancient
civilizations,
as
well
altering
human
livelihoods,
especially
in
East
Asia.
However,
different
areas
China
have
histories
terms
development
extensive
settlement
period,
spatial
differences
human–environment
interaction
are
not
yet
understood.
Here,
we
review
up-to-date
results
radiocarbon
dating,
archaeobotanical,
zooarchaeological
analysis
from
sites
China,
along
with
high-resolution
paleoclimatic
records,
to
explore
spatiotemporal
variation
its
relationship
climate
change
period
10,000–2200
BP.
The
suggest
intensities
northern
Asia
Monsoon
Region
south
were
relatively
low
10,000–6500
BP,
a
small
peak
∼8000–7500
evidently
increased
since
∼6500
whereas
farming
groups
began
settle
intensively
on
Tibetan
Plateau
inland
arid
region
∼5200
BP
∼4000
respectively.
intensification
was
primarily
induced
by
agricultural
prehistoric
Eurasia;
may
influenced
hydrothermal
vegetation
conditions
for
crop
cultivation
livestock
production.
asynchronous
intensive
settlements
resulted
impact
activities
environments
surrounding
them
shedding
light
evolution
human–land
periods.
Radiocarbon,
Journal Year:
2023,
Volume and Issue:
65(3), P. 721 - 732
Published: May 15, 2023
ABSTRACT
We
present
two
new
millennium-long
tree-ring
oxygen
isotope
chronologies
for
central
and
northern
Japan,
based
on
9693
annually
resolved
measurements
of
isotopes
from
39
unearthed
samples
consisting
mainly
Japanese
cedar
(
Cryptomeria
japonica
).
These
were
developed
through
cross-dating
widths
δ
18
O
data
multiple
covering
the
periods
2349–1009
BCE
(1341
yr)
1412–466
(947
respectively.
In
combination
with
our
published
chronology
dataset
currently
available
covers
past
4354
yr
(2349
to
2005
CE),
which
represents
longest
Asia.
Furthermore,
high-resolution
temporal
record
14
C
contents
independently
by
Sakurai
et
al.
(2020)
was
reproduced
earlywood
latewood
in
annual
rings
period
667–660
BCE.
Quaternary Research,
Journal Year:
2023,
Volume and Issue:
114, P. 30 - 51
Published: April 11, 2023
Abstract
In
this
paper,
we
apply
standard
zooarchaeological
methods
and
novel
osteological
approaches
to
analyse
faunal
remains
from
five
Middle–Late
Holocene
sites
in
the
southern
Tibetan
Plateau
(STP).
Framed
by
direct
radiocarbon
dates
on
taxonomically
classified
bioarchaeological
compared
with
published
palaeoclimate
data,
our
findings
revealed
a
three-stage
process
of
agro-pastoral
development
STP
ca.
5.5
1.0
ka.
first
phase,
habitation
was
restricted
lower
southeastern
part
plateau
human
subsistence
essentially
based
foraging
low-level
pig–millet
farming.
With
onset
colder
drier
climatic
conditions
3.8
ka,
study
area
witnessed
growing
presence
at
higher
elevations
its
central
western
parts,
together
shift
towards
bovid
husbandry
barley
cultivation,
that
is,
agricultural
practices
originated
west
Asia;
these
were
likely
introduced
following
eastern
margin
TP
and/or
arrived
sub-Himalayan
transfer.
Climate
ecological
degradation
might
have
contributed
decline
local
game
favour
cold-and-dry-tolerant
pastoral
livestock
crops.
Our
work
shows
climate
change,
shifts,
prehistoric
cultural
transmissions
are
intimately
connected.
