Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Янв. 6, 2025
Urban
overheating
significantly
affects
thermal
comfort
and
livability,
making
it
essential
to
understand
the
relationship
between
urban
form
land
surface
temperature
(LST).
While
horizontal
dimensions
of
have
been
widely
studied,
vertical
structures
their
impact
on
LST
remain
underexplored.
This
study
investigates
influence
three-dimensional
characteristics
LST,
using
ECOSTRESS
sensor
data
four
machine
learning
models.
Six
morphology
variables—building
density
(BD),
mean
building
height
(MH),
volume
(BVD),
gross
floor
area
(GFA),
ratio
(FAR),
sky
view
factor
(SVF)—are
analyzed
across
different
seasons
times
day.
The
results
reveal
that
MH,
BD,
FAR
are
season-stable
factors,
with
higher
MH
correlated
lower
((e.g.,
an
observed
reduction
approximately
3
°C
in
spring),
while
BD
is
associated
(e.g.,
increase
about
3.5
autumn).
In
contrast,
BVD,
GFA,
SVF
season-varying
factors
variable
impacts
depending
time
year.
Higher
BVD
generally
elevated
GFA
linked
LST.
These
associations
reflect
absolute
changes
measured
directly
from
data.
findings
offer
valuable
insights
into
complex
interactions
helping
inform
strategies
for
heat
mitigation
sustainable
planning.
Sustainability,
Год журнала:
2023,
Номер
15(14), С. 10787 - 10787
Опубликована: Июль 10, 2023
Urban
morphology
quantitatively
expresses
a
city’s
spatial
structure,
internal
relationships,
and
physical
form.
It
has
advantages
for
predicting
urban
growth
analyzing
the
current
state
of
cities
in
literature.
A
comprehensive
study
on
complex
relationships
between
heat
island
intensity
(UHII)
is
great
importance
mitigating
(UHI)
effect
megacities.
This
models
morphological
indicators
fine
resolution
based
three
aspects:
building
morphology,
ecological
infrastructure,
human
activities.
The
model
accurately
captures
UHII
by
employing
definition
UHI
effects.
relationship
was
further
examined
using
extreme
gradient
boosting
(XGBoost)
Shapley
additive
explanations
(SHAP).
By
taking
central
Beijing,
China
as
area,
major
findings
include
following:
(1)
Significant
daytime
effects
were
observed
within
research
particularly
during
summer
months,
when
it
appears
to
be
most
severe.
More
than
90%
region
experiences
varying
degrees
(2)
significantly
correlated
with
both
2D
3D
indicators.
Low
sky
view
factor
(SVF)
high
SVF
tend
mitigate
UHI,
whereas
moderate
tends
aggravate
UHI.
(3)
In
densely
populated
areas,
tall
trees
may
more
effective
other
forms
vegetation
at
Based
aforementioned
findings,
this
article
suggests
that
optimization
should
focus
seasonality,
specificity,
indicator
specificity
megacities
design
planning
aimed
Ecological Indicators,
Год журнала:
2023,
Номер
154, С. 110756 - 110756
Опубликована: Авг. 7, 2023
Human
perceptions
represent
the
psychological
experiences
and
feelings
of
individuals
toward
surrounding
environment.
It
is
influenced
by
various
physical
elements
(e.g.,
sky,
tree,
building,
etc.)
within
street
canyon.
However,
prior
research
has
predominantly
relied
on
field
surveys,
high-cost
methods,
restricted
data
sources,
thereby
limiting
analyses
impact
canyon
characteristics
human
perceptions.
Importantly,
nonlinear
effects
have
not
been
fully
understood
existing
studies.
Thus,
this
study
employed
Baidu
Street
View
images
to
evaluate
at
a
visual
level.
A
random
forest
regression
was
then
utilized
uncover
The
results
suggested
that
some
nonlinearly
affected
Specifically,
optimal
sky
proportion
individual
15%,
appropriate
thresholds
for
trees
grass
were
17.5%
1.0%,
respectively.
Overall,
positive
might
be
increased
if
natural
canyons
maintained
below
threshold.
In
addition,
threshold
observed
in
relation
perception
beauty
due
cars,
vitality
security
roads,
boredom
walls.
findings
can
serve
as
scientific
evidence
inform
urban
renewal
based
people-oriented
approach.
