Spatial Analysis at EEA and CORINE Land Cover GeoForum meeting, EEA, 18 th May 2010.

transcript

Spatial Analysis at EEAand CORINE Land Cover

GeoForum meeting, EEA, 18th May 2010

Outline

• GIS at EEA from the desktop user perspective–Context–Spatial analysis

• CORINE Land Cover–Project set up–Results–Derived analysis examples

EEA mission

The EEA aims to support sustainable development and to help achieve significant and

measurable improvement in Europe’s environment, through the provision of timely,

targeted, relevant and reliable information to policy-making agents and the public.

By means of...

• Reports, publications spatial analysis, maps• Indicators spatial analysis, maps• Datasets download spatial data• Online datasets

Our spatial data context

• Subsidiarity principle local authorities, regions, countries produce data

• Target: 1:100,000• The problem: to have harmonized comparable

data• Data flows

EIONET & data flows

EEA mapping standards

• www.eionet.europa.eu/gis• Guideline to data & maps:• http://www.eionet.europa.eu/gis/docs/EEA_GISgui

de.doc– Map templates– Metadata editor/metadata profile– Good practices: projections, formats, how to report

spatial data

Spatial analysis

• Try to answer policy questions in a dynamic changing environment: how much?

• Independently assess the state of environment and drivers: land use/land cover change, water availability, agriculture and environment, ...

• Produce derived datasets: accessibility maps, fragmentation indexes, urban temperature, ...

• Homogenous data rather than very detailed• Low amount of data specialized spatial analysis• Techniques: all available, but very raster based

Examples

• Hydrology: ECRINS• Derived datasets: Green Background• Fragmentation• Accessibility maps• Land cover statistics: trends of land cover change

ECRINS – hydro model

Green Background map

Landscape fragmentation

Accessibility maps

Corine Land Cover (CLC)

• Scale 1:100.000, seamless vector database

• 44 classes in 3 hierarchical levels

• 25 ha Minimum Mapping Unit (MMU)

• 5 ha MMU for land cover changes

• 39 countries, about 5.5 Million square Km

• Classes illustrated:

http://etc-lusi.eionet.europa.eu/CLC2000/classes

Main political demand

• Environment PolicyHabitat Directive (Natura2000), Biodiversity convention , 2010

targetWater Framework DirectiveIntegrated Coastal Zone ManagementINSPIRE

• Common Agriculture PolicyImpact of agricultural policy on the environment

• Regional PolicyEuropean Spatial Development PerspectiveTerritorial cohesion

• Research PolicyClimate change

+ others

Ortho-rectified satellite image database

Visual image interpretation (national teams)

Verification – qualitative (EEA - ETC/LUSI)

Final vector database (national team)

Validation – quantitative (EEA - ETC/LUSI)

European Data integration – vector & raster (EEA - ETC/LUSI)

Methodology

CLC concept

IMAGE200x CLC200xCentralised activity

based on satellite images

Decentralised activity based on national

CLC databases

Organisational set-up

EEAEEA JRCJRC

LCTULCTU IMAGE2000 team

IMAGE2000 team

National CLC2000 teamsNational CLC2000 teams

European Steering

Committee

European Steering

Committee

National Steering

Committee

National Steering

Committee

Methodology

Dissemination

CD-ROM

CLC1990 pre-processing

Image processing

Change detectionand mapping

Data integrationand validation

IMAGE2000

Satellite images 1990

CORINE land cover1990 (CLC1990)

(Topologically andgeometrically) corrected

national CLC1990

National CLC2000

Digital Elevation Model,

Ground Control Points

Raw satellite images2000

IMAGE2000

Satellite images 1990

Corrected nationalCLC1990

(Thematically) correctednational CLC1990

National CLC2000

Corrected nationalCLC1990

European CLC2000

Corrected EuropeanCLC1990

European CLC2000

Corrected EuropeanCLC1990

IMAGE2000

PreparationEEA, EC, ETC/LC, NFP

Organisational structure

Budget

Time-plan

Product definition

Call for tenders

History

• CLC1990 • Process from 1985 to 1995 • 10-year process • Growing process • No common data policy

• CLC2000 • Coordinated approach • Snapshot (2000 +/- 1 year)• 29 countries • Agreed data policy for

image and mapping data • Output:

– CLC2000– CLC changes – CLC90 corrected

CLC2006

• Why?–High interest in land cover changes –More frequent updates (< 10 years) –Better fulfil reporting obligations

• Integration into GMES • Reliable, up-to-date and accessible information on the

environment for Europe

–GMES Fast Track Service on Land (delivery 2008) • CLC2006 update• 2 high-resolution layers

GMES FTS Land first set of core land cover data products

CLC 2006

Built-up area / sealing

CLC Changes

CORINE Land Cover map

Validation of European CLC data

• Need for an independent database –LUCAS – Land Use land Cover Area Sampling

• Statistical sampling grid

• Similar timeframe

• 10.000 points over Europe (18 countries)

• Field survey of land use and land cover

• Field photographs

• Re-interpretation of field photographs

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