Urban Morphological Zones v. 2006An improved dataset for urban analysis

Roger Milego i AgràsETC-TE

Workshop on Land Accounts and Urban MorphologyBellaterra, 12th July 2006

• “A set of urban areas laying less than 200m apart”• Urban areas defined from land cover classes

contributing to the urban tissue and function.

– 111 – Continuous urban fabric– 112 – Discontinuous urban fabric– 121 – Industrial or commercial units– 141 – Green urban areas

– 123 (Port areas), 124 (Airports) and 142 (Sport and leisure facilities), if they are neighbours to the core classes or to one of them touching the core classes. Enlarged core classes

– 122 (Road and rail networks) and 511 (Water courses), when neighbours to UMZ 1st step, cut by 300m buffer.

– Forests & scrub (311,312,313,322,323,324), when they are completely within the core classes.

UMZ definition

Workshop on Land Accounts and Urban Morphology, UAB, 12th

July 06

Core classes

Procedural steps

1) CLC2000 reclassification

Core classesPorts, Airports and sport facilitiesTransportation and riversForests & scrub

VEC

TO

RIS

ATIO

N

Workshop on Land Accounts and Urban Morphology, UAB, 12th

July 06

Procedural steps

2) Addition of ports, airports and sport facilities to the core classes

Core classes

Ports, airports…

Selection by neighbourhood (iterative process)Merge

Enlarged core classes

Workshop on Land Accounts and Urban Morphology, UAB, 12th

July 06

Procedural steps

3) Addition of roads, railways and rivers to the enlarged core classes

Enlarged core classesRoads, railways, rivers

Selection by neighbourhoodClip by 300m buffer around enlarged core classes

Workshop on Land Accounts and Urban Morphology, UAB, 12th

July 06

Merge

Enlarged core classes + roads, railways and rivers

Procedural steps

4) Addition of forest and scrub classes fully within the core classes

Enlarged c.c. + roads…Forests & scrub

Selection (fully inside core classes)

Merge

Workshop on Land Accounts and Urban Morphology, UAB, 12th

July 06

Pre-UMZ rasterisation

Procedural steps

5) UMZ built-up: expansion and shrinking processes

Workshop on Land Accounts and Urban Morphology, UAB, 12th

July 06

Rasterised Pre-UMZ

EXPANSION by 1 pixel (100m)SHRINKING by 1 pixel (100m)

Vectorisation

UMZ v. 2006

Attribute assignment

Commune codes: intersection with EuroBoundaryMap Jan’06

Attribute assignment

Population figures: intersection with JRC’s 2001 Population density grid (made by Javier Gallego). Result: population number within every single UMZ.

CY,BA,MK,AL: population data from citypopulation.de for main cities (in general, above 5000 inhabitants)

Further steps

• UMZ denomination: i.e. based on main city or main cities.

• Other attributes addition.• Linkage to statistics.• Calculation of UMZ90 based on CLC90

revised.• Calculation of changes between UMZ90 and

UMZ2000.

Workshop on Land Accounts and Urban Morphology, UAB, 12th

July 06

THANKS!