Characterizing street trees in three metropolises of central China by using Street View data: From individual trees to landscape mapping
Ecological Informatics,
Год журнала:
2024,
Номер
80, С. 102480 - 102480
Опубликована: Янв. 19, 2024
Street
trees
can
benefit
urban
spaces,
and
the
characterization
of
them
is
a
basis
for
evaluating
their
functions
proper
management.
In
this
paper,
we
speculate
that
View
imagery-based
measurement
favors
characterizing
street
from
individual
tree
sizes,
growth
status
to
spatial
mapping
risk
region
identification
at
multiple
city
levels.
Using
Wuhan,
Changsha,
Nanchang
as
examples,
nearly
6000
sites
over
111,000
Baidu
(BSV)
images
were
used
measure
status,
vertical
structure.
Together
with
BSV-derived
data,
also
calculated
street-view
greenness
index
(GVI)
Normalized
Difference
Vegetation
Index
(NDVI)
remote
sensing
then
city-level
was
produced
identify
regions
afforestation.
The
results
showed
BSV
could
compare
trees,
i.e.,
Changsha
had
1.2–1.3-fold
higher
diameter,
height,
canopy
size
than
lowest
Nanchang;
highest
GVI,
but
NDVI;
while
NDVI,
showing
different
significance
between
remote-sensing
greenness.
data
urbanization
effects,
sizes
decreased
center
edge,
three
cities
same
pattern.
By
using
score
summarized
leaf
blade
color,
tree-supported,
dieback,
dead-tree
percents,
thereafter,
urbanization-induced
decreases
scores
be
observed
suburbs.
At
urban-rural
gradient,
found
structure
tended
complex,
sky
middle
GVI
ground
rose
in
all
general.
made
landscape
available,
map
areas
big-sized
conservation,
health
problems,
deficiency,
over-simplified
forest
within
or
among
cities.
development
complex
associations
characteristics
geo-climates
social
decoupled
by
redundancy
ordination.
general,
streets
more
pedestrians
often
accompanied
taller,
larger,
healthier
communities,
an
increasing
sky/ground
ratio
greenery.
Our
findings
highlighted
Street-view
assess
characteristics,
geographic
distribution,
possible
other
factors,
favoring
inventory
individuals
management
policymaking.
Язык: Английский
The Impact of Green Spaces on Thermal Comfort in Urban Street Canyons during Hot Summer Days and Nights
Research Square (Research Square),
Год журнала:
2024,
Номер
unknown
Опубликована: Апрель 11, 2024
Abstract
Road
greening
plays
an
important
role
in
improving
the
thermal
comfort
of
street
canyons.
Optimizing
landscape
pattern
road
green
spaces
is
undoubtedly
beneficial
for
better
utilizing
effect
limite
area.
Given
that
can
have
completely
different
impacts
on
canyons
during
day
and
at
night,
this
study
attempts
to
explore
how
optimize
maximize
its
overall
improvement
throughout
summer.
This
takes
a
section
Guihua
Changsha,
city
central
southern
China
as
example,
built
model
based
actural
situation
road,
this,
constructs
five
optimization
models
effectiveness
comfort.
Research
has
found
optimizing
more
significant
daytime
canyons,
with
maximum
difference
UTCI
between
being
0.76
℃.
However,
nighttime
only
0.06
Therefore,
fully
plants
be
effective
improve
canyon.
canyon,
peolple
should
focus
other
measures
like
ventilation
change
underlying
surface
materials.
Язык: Английский