The impact of urban polycentralization and scale expansion on economic efficiency: evidence from Chinese cities
Frontiers in Environmental Science,
Год журнала:
2025,
Номер
13
Опубликована: Фев. 27, 2025
Introduction
This
study
investigates
the
effects
of
urban
polycentricity
and
city
size
on
total
factor
productivity
(TFP)
in
Chinese
cities.
Methods
Using
high-resolution
population
distribution
data
from
Landscan
applying
instrumental
variable
(IV)
estimation
to
address
endogeneity
concerns,
we
construct
a
novel
measure
polycentricity.
Results
Our
findings
show
that
while
expanding
enhances
TFP
through
increased
economies
scale,
greater
negatively
affects
by
weakening
agglomeration
innovation
spillovers.
Discussion
The
analysis
suggests
reduces
concentration
economic
activities,
which
hampers
knowledge
diffusion
innovation,
leading
lower
productivity.
Additionally,
identify
optimal
for
maximizing
TFP,
where
excessive
growth
beyond
certain
point
becomes
counterproductive.
Язык: Английский
Revealing the spatio-temporal coupling coordination characteristics and influencing factors of carbon emissions from urban use and ecosystem service values in China at the municipal scale
Frontiers in Ecology and Evolution,
Год журнала:
2025,
Номер
13
Опубликована: Март 27, 2025
In
the
context
of
“dual-carbon”
goal,
studying
complex
relationship
between
carbon
emissions
and
ecosystem
service
values
brought
about
by
land-use
change
is
great
significance
in
promoting
regional
low-carbon
optimization,
territorial
spatial
governance,
achievement
goal
peaking
neutrality.
This
study
takes
286
cities
China
as
research
object,
based
on
data
China’s
land
use
value
(ESV)
from
2012
to
2022,
adopts
geo-spatial
analysis
techniques
such
autocorrelation
geographically-weighted
regression
models
temporal
characteristics,
degree
coupling
coordination,
influencing
factors
municipal
total
ESV.
The
results
show
that
(1)
have
exhibited
an
overall
increasing
trend
2022.
ESV
has
shown
a
downward
characterized
inverted
“N”
shape.
(2)
coordination
effect
generally
shows
mirrored
“L”
growth
(3)
There
significant
negative
correlation
ESV,
primarily
manifested
“high-high,”
“high-low,”
“low-low”
clustering
characteristics.
(4)
Three
socio-economic
factors—local
fiscal
general
budget
expenditure,
energy
utilization
efficiency,
population—positively
influence
Strictly
controlling
local
population
can
effectively
promote
China's
green,
development
ecological
security.
Язык: Английский
Trade and Sustainability: The Green Dividend of Grain Trade
Agribusiness,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 14, 2025
ABSTRACT
This
study
delves
into
the
potential
influence
of
China's
grain
trade
on
carbon
emissions
from
production
in
169
countries
during
period
2001–2020.
The
investigation
utilizes
data
between
China
and
these
nations,
along
with
corresponding
production.
results
reveal
that
contributes,
to
a
certain
extent,
reduction
partner
countries.
conclusion
withstands
various
robustness
tests
conducted.
Heterogeneity
analysis
demonstrates
impact
driving
is
more
notable
developing
Moreover,
soybean
emerges
as
particularly
advantageous
promoting
emission
trading
Mechanism
conducted
explore
further
aspects
indicate
establishment
free
areas
(FTAs)
plays
crucial
moderating
role
trade,
fostering
reduction.
deemed
beneficial
for
advancing
efforts
reducing
increased
use
fertilizers
has
intensified
distribution
process.
findings
not
only
offer
fresh
insights
understanding
global
its
but
also
provide
strategic
considerations
security
governance,
international
collaboration
addressing
climate
change,
avenues
accessing
green
dividends.
Язык: Английский
Exploring the role of digital economy on carbon productivity: New evidence from the “Broadband China” Policy
Energy Efficiency,
Год журнала:
2025,
Номер
18(4)
Опубликована: Апрель 1, 2025
Язык: Английский
Zooming in or zooming out: Energy strategy, developmental parity and regional entrepreneurial dynamism
Energy Economics,
Год журнала:
2024,
Номер
140, С. 108021 - 108021
Опубликована: Ноя. 10, 2024
Язык: Английский
Would geopolitical risks be the new driver of the energy transition? An empirical study on renewable energy technology innovation
Energy Economics,
Год журнала:
2024,
Номер
unknown, С. 108100 - 108100
Опубликована: Дек. 1, 2024
Язык: Английский
Digital Economy and Energy Intensity: The Light and Dark Side
Review of Economic Assessment,
Год журнала:
2024,
Номер
3(4), С. 70 - 92
Опубликована: Дек. 15, 2024
The
digital
economy
exerts
both
positive
and
negative
influences
on
urban
sustainable
development,
yet
there
is
a
notable
gap
in
the
existing
research
concerning
its
impact
energy
intensity
underlying
mechanisms.
this
study
pioneers
investigation
of
nonlinear
relationship
between
intensity,
revealing
significant
inverted
U-shaped
relationship.
Specifically,
we
observe
noteworthy
reduction
when
index
surpasses
0.286.
Our
empirical
findings
indicate
that
not
only
directly
but
also
an
indirect
through
initiatives
such
as
promotion
green
innovation
agglomeration
high-tech
industries.
Importantly,
promotional
effects
exhibit
heterogeneity
with
respect
to
geographical
location,
resource
endowment,
scale.
This
paper
contributes
theoretical
understanding
information
technology
development
by
analyzing
mechanisms
at
level
intricate
intensity.
Язык: Английский