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About generalization of the spatial pattern of green spaces among different cities

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Re

su

lts

& Di

scu

ss

ion

About generalization of the spatial pattern of green spaces

among different cities

AL

TER

-N

ET

C

O

N

FEREN

CE

N

AT

URE

& U

RB

AN

W

EL

LBEING

: N

AT

U

RE

-B

ASE

D

S

O

LUT

IONS

T

O

S

O

CIET

AL

C

H

AL

LENGES

G

H

ENT

, M

AY

19

TH

20

15

Contact

: justine.mar

echal@ul

g.ac.be

Co

ntex

t

Objective

Compare the spatial pattern of green spaces for five cities in the same region (Flanders, northern part

of Belgium) with a similar historical development: is the spatial pattern of green spaces generalizable?

Me

tho

d

PLURISK Project:

Forecasting and management of extreme rainfall induced risks in the urban environment

Funded by the Belgian Science Policy Office (May 2012 2016)

Work Package 5: Risk reduction by prevention, management and real-time control

More information about PLURISK project:

www.kuleuven.be/hydr/plurisk

Visit our websites:

www.gembloux.ulg.ac.be/biodiversite-et-paysage

www.biodivercity.be

GSs

are the key to the

provision of

ESs

within urban

areas.

Methodology steps:

• Creation of a buffer;

• Determination of the position

of the centroïd of each green

space;

• Use of landscape indices.

The provision of

ESs

depends on the spatial

pattern of the

GSs

.

The spatial pattern of

GSs

depends on the (1) region (2)

degree/mode of

urbanization.

Characterization of urban

gradient helps to link pattern

with process in urban

ecological studies.

Few existing studies focus

on the comparison of the

GSs

between cities in the

same region.

GSs

=

Green

Spaces

ESs

=

Ecosystem

Services

GENT

ANTWERPEN

MECHELEN

LEUVEN

BRUGGE

Green space > 3m

Green space < 3m

Agricultural area

No green space

Source: AGIV, 2013

Urban

center

Peripheral

area

Antwerpen

Brugge

Gent

Leuven

Mechelen

Minimum area GSs (ha)

0.01

0.01

0.01

0.01

0.01

Maximum area GSs (ha)

89.58

9.55

27.31

34.71

29.73

Mean area GSs (ha)

0.16

0.10

0.09

0.12

0.13

Median area GSs (ha)

0.03

0.03

0.03

0.03

0.03

Total area GSs (ha)

804.98

410.43

865.89

483.53

483.92

0.00 5.00 10.00 15.00 20.00 25.00 0 -99 100 -199 200 -299 300 -399 400 -499 500 -599 600 -699 700 -799 800 -899 900 -999 1000 -10 9 9 1100 -11 9 9 1200 -12 9 9 1300 -13 9 9 1400 -14 9 9 1500 -15 9 9 1600 -16 9 9 1700 -17 9 9 1800 -18 9 9 1900 -19 9 9 2000 -20 9 9 2100 -21 9 9 2200 -22 9 9 2300 -23 9 9 2400 -24 9 9 2500 -25 9 9 2600 -26 9 9 2700 -27 9 9 2800 -28 9 9 2900 -29 9 9

Gr

een spaces ar

ea pr

op

ortio

n

(%)

Distance classes from the city center (m)

GSs area proportion: Antwerpen

GSs area proportion: Brugge

GSs area proportion: Gent

GSs area proportion: Leuven

GSs area proportion: Mechelen

0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 0 -99 100 -199 200 -299 300 -399 400 -499 500 -599 600 -699 700 -799 800 -899 900 -999 1000 -10 9 9 1100 -11 9 9 1200 -12 9 9 1300 -13 9 9 1400 -14 9 9 1500 -15 9 9 1600 -16 9 9 1700 -17 9 9 1800 -18 9 9 1900 -19 9 9 2000 -20 9 9 2100 -21 9 9 2200 -22 9 9 2300 -23 9 9 2400 -24 9 9 2500 -25 9 9 2600 -26 9 9 2700 -27 9 9 2800 -28 9 9 2900 -29 9 9

Gr

een spaces mean

ar

ea

(ha)

Distance classes from the city center (m)

GSs mean area: Antwerpen

GSs mean area: Brugge

GSs mean area: Gent

GSs mean area: Leuven

GSs mean area: Mechelen

• Similar mean and median area

• Dominance of small-sized green

spaces

Similar proportion of GSs area

(GSs area/Total area): mean

between 6 and 9%

Increase of GSs

mean area along the

urban-peripheral

gradient

6%

9%

Wait a minute!

What is the link with the urbanization type?

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