Methodology, approach and existing tools

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Methodology, approach and existing tools for
data production and harmonization
BY ANTONIO DI GREGORIO
FAO-AFRICOVER
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Methodology, approach and existing tools for
data production and
harmonization
ARE WE PRODUCING DATA REALLY FUNCTIONAL TO A
MULTI-USERS COMMUNITY AND SYNERGIC TO THE USE OF
G.I.S?
HOW CONCRETE IS THE RISCK TO PRODUCE DATA WITH
SOFISTICATED TECHNOLOGIES BUT USING OLD
CONCEPTS DEVELOPED BEFORE THE AGEOF G.I.S.
and SPATIAL ANALYSIS?
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Methodology, approach and existing tools for
data production and
harmonization
RECURRENT SCENARIO
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Methodology, approach and existing tools for
data production and
harmonization

• ARE THE DATA ABLE TO REPRESENT THE INHERENT
• CHARACTERISTIC OF THE STUDY AREA?
• ARE THE DATA MULTI-USER ORIENTED?
• (ADAPTABLE TO A WIDE RANGE OF END USERS?)
• ARE THE DATA THEMATICALLY BALANCED?
• ARE THE DATA FLEXIBLE ON A GEOGRAPHIC
• AND THEMATIC EXTENT?
• HOW EFFICIENT IS THE LEVEL OF INTEGRABILITY OF
• THESE INFORMATION WITH OTHER TYPES OF DATA?
• HOW EFFICIENT IS TODAY THE PRODUCTION OF DATA?

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Methodology, approach and existing tools for
data production and
harmonization
NEW CONCEPT OF MULTI USER ORIENTED NATURAL
RESOURCES DATA BASE
INTERP. STANDARDIZ.
TEMATIC CART. ASPECT
INTERPRETATION EFFICIENCY
DATA PRODUCERS
DATA USERS
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Methodology, approach and existing tools for
data production and
harmonization

• LCCS was created in response to a need for
• a harmonized and standardized collection of land
  cover data
• availability of land cover data for a wide range
  of applications and users
• comparison and correlation of land cover classes.

LCCS is a comprehensive methodology for
description, characterization, classification and
comparison of most of land cover identified
anywhere in the world, at any scale.
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Methodology, approach and existing tools for
data production and
harmonization

• Major advantages of the method
• LCCS gives to the user the possibility to define
  a
• large number of land cover features (app.100.000)
• despite the large number all the classes have a
  very
• distinctive and unambiguous meaning
• LCCS create an absolute level of standardization
• between the different users

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Methodology, approach and existing tools for
data production and
harmonization

• Major possible applications
• all the land cover/natural resources mapping
• activities at any scale in any part of the world
• bridging system between land cover maps
• that use local or not standardized legends
• possible link between small scale global
• mapping activities and detailed large scale
• national mapping programs
• bridging system to link natural resources
• statistical census with mapping programs
• at national or regional level

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Methodology, approach and existing tools for
data production and
harmonization
NEW CONCEPT OF MULTI USER ORIENTED NATURAL
RESOURCES DATA BASE
INTERP. STANDARDIZ.
TEMATIC CART. ASPECT
INTERPRETATION EFFICIENCY
DATA PRODUCERS
DATA USERS
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Methodology, approach and existing tools for
data production and
harmonization
MAP (Mapping Accuracy Program) a statistical
program to allow the automatic calculation of
the thematic mapping accuracy using different
methods and different expected level of
statistical confidence.
ACCURACY ASSESSMENT METHODS

• QUALITATIVE

• QUANTITATIVE

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Methodology, approach and existing tools for
data production and
harmonization
FAST AND OBJECTIVE DATA COLLE CTION

• FIELD DATA COLLECTION BASED ON PALM TOP
• AUTOMATIC AND TRULY OBJECTIVE PROCEDURE FOR DATA
• COLLECTION AND COMPARISON.

AUTOMATIC COMPARISON
VEGETATED NON VEGETATED
AUT. TRANS. IN LCCS CLASSIFIERS
X
NAT. VEG. ART. VEG.
X
TREES A3 OPEN A12 MEDIUM
B6 (height) BROAD. D1 EVERG. E2 SHRUBS
F6 (2 layer) VERY O. F7 M. LOW
G3 (height)
TREES A3 V. OPEN A13 MEDIUM
B6 (height) BROAD. D1 EVERG. E2 SHRUBS
F6 (2 layer) VERY O. F7 M. LOW
G3 (height)
COVER HEIGHT LEAF TYPE PHEN.
Trees Shrubs Herb.
X
X
X
50
8m
X
X
X
2m
25
GIS CODE 20862
GIS CODE 20864
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Methodology, approach and existing tools for
data production and
harmonization

• RESULTS
• AUTOMATIC PROCEDURE FOR ACCURACY ASSESSMENT
• WITH DIFFERENT STANDARDIZED METHODS
• THEMATIC ACCURACY BY CLASS TYPE
• THEMATIC ACCURACY BY CLASSIFIERS
• EVALUATION OF THE INPORTANCE OF THE ERROR
• THEMATIC ACCURACY CALCULATED FOR GEOGRAPHIC
• AREAS (COUNTRY, PROVINCE ETC.)

Class 20864 (v.o. woodland) ACC. 80
CODE TRUTH
TREES
HERB.
TREES A3 100 COVER A13
100 HEIGHT B6 100 BROAD. D1
100 DECID. E2 80
CLOSED
OPEN
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Methodology, approach and existing tools for
data production and
harmonization
NEW CONCEPT OF MULTI USER ORIENTED NATURAL
RESOURCES DATA BASE
INTERP. STANDARDIZ.
TEMATIC CART. ASPECT
INTERPRETATION EFFICIENCY
DATA PRODUCERS
DATA USERS
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Methodology, approach and existing tools for
data production and
harmonization
ADG (Africover Database Gateway) it will be a
user friendly software that will allow an easy
and fast recombination of the Land Cover polygons
not only by class names but also, in a much more
flexible and detailed way, by classifiers.
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Methodology, approach and existing tools for
data production and
harmonization
ADG
AFRICOVER DATABASE GATEWAY

• BASIC SOFTWARE
• FUNCTIONS (secondset)
• DISPLAY data base as
• class type
• DISPLAY data base as
• classifiers
• DISPLAY database as
• class type and classifiers
• DISPLAY coordinates
• DISPLAY number of
• selected polygons

Classifiers Used Cultivated Terrestrial and
Managed Land A1 Tree Crops A3 Herbaceous
Crops A7 Broadleaved A11 Trees/Park(s) B1 Large
to Medium Field(s) B5 Continuous C1
Monoculture C2 Intercropped C5
Intercropped/Tree Crop(s) D3 Irrigated D9
Permanently Cropped Area
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CLASSIFIERS USED
ADG
Methodology, approach and existing tools for
data production and
harmonization
MAYOR LAND COVER CLASS TYPE
AFRICOVER DATABASE GATEWAY
Cultivated
Natural vegetation
Other environmental attributes
BASIC SOFTWARE FUNCTIONS
A2
A1
A3
A2 A3 A4
Shrub crop
Herbaceous crop
Tree Crops
Classifiers selection select
using Arithmetic and Logical operators
add more - excluding
only if gtgt contiguity filter
using accuracy area size
Herbaceous veg. Trees
Shrubs
A11
A10 A11 A14
B1
B3
City parks Large fields Small
fields
Close cover Open cover
Sparse cover
D1 D2 D3
B5
C1
B6
Broadleaved Need leave
Aphillus
Continous fields Scattered fields Monoculture
E1 E2 E3
D3
D1
C2
Intercropped Rainfed
Irrigated
Evergreen Deciduous
Mixed
D4
D5
D9
F4 F5 F6
Herbaceous Trees second Shrubs
second second layer layer
layer
Shifting Fallow
Permanent
M100 M113 M210 M513 M514
M523
Alluvial deposits Lacustro alluvial Limestone
Clay loam Sandy loam
Sandy loess
Classifiers selected New class name
Color/code
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CLASSIFIERS USED
ADG
Methodology, approach and existing tools for
data production and
harmonization
MAYOR LAND COVER CLASS TYPE
AFRICOVER DATABASE GATEWAY
Cultivated
Natural vegetation
Other environmental attributes
BASIC SOFTWARE FUNCTIONS
A3


A1
A7
A2 A3 A4
Broadleaved tree or scrub
Herbaceous crop
Tree Crops
Classifiers selection select
using Arithmetic and Logical operators
add more - excluding
only if gtgt contiguity filter
using accuracy area size
Herbaceous veg. Trees
Shrubs
A11
A10 A11 A14

B1
B3
City parks Large fields Small
fields
Close cover Open cover
Sparse cover
D1 D2 D3
B5
C1
B6
Broadleaved Need leave
Aphillus
Continuous fields Scattered fields
Monoculture
E1 E2 E3
D3
D1
C2
Intercropped Rainfed
Irrigated
Evergreen Deciduous
Mixed

D4
D5
D9
F4 F5 F6
Herbaceous Trees second Shrubs
second second layer layer
layer
Shifting Fallow
Permanent
M100 M113 M210 M513 M514
M523
Alluvial deposits Lacustro alluvial Limestone
Clay loam Sandy loam
Sandy loess
Classifiers selected New class name
Color/code
Tree covered area
A1 A11 A3 F5
1
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CLASSIFIERS USED
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ADG
Methodology, approach and existing tools for
data production and
harmonization
MAYOR LAND COVER CLASS TYPE
AFRICOVER DATABASE GATEWAY
2
1
Cultivated
Natural vegetation
Other environmental attributes
BASIC SOFTWARE FUNCTIONS
gtgt
A2
A1
A3
gtgt
A2 A3 A4

Shrub crops
Herbaceous crop
Tree Crops
Classifiers selection select
using Arithmetic and Logical operators
add more - excluding
only if gtgt contiguity filter
using accuracy area size
Herbaceous veg. Trees
Shrubs

A11
A10 A11 A14
B1
B3
City parks Large fields Small
fields
Close cover Open cover
Sparse cover
D1 D2 D3
B5
C1
B6
Broadleaved Need leave
Aphillus
Continuous fields Scattered fields
Monoculture
E1 E2 E3
D3
D1
C2
Intercropped Rainfed
Irrigated
Evergreen Deciduous
Mixed
D4
D5
D9
F4 F5 F6
Herbaceous Trees second Shrubs
second second layer layer
layer
Shifting Fallow
Permanent
M100 M113 M210 M513 M514
M523
Alluvial deposits Lacustro alluvial Limestone
Clay loam Sandy loam
Sandy loess
Classifiers selected New class name
Color/code
A3 A11 gtgt A1 gtgt A3
Open trees area only contiguous to tree and scrub
crops
1
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ADG
Methodology, approach and existing tools for
data production and
harmonization

• FORESTRY
• AGRICULTURE
• RANGELAND
• VEG. ECOLOGY
• URBAN PLANNING
• ................................

AFRICOVER DATABASE GATEWAY
SELECTION BY SCENARIOS
BASIC SOFTWARE FUNCTIONS
select using Arithmetic and Logical
operators add more -
excluding only if gtgt
contiguity filter using
accuracy area size
HYPERLINK
MAYOR CLASSES
VARIABLES
FOREST
CLOSED SHRUBLAND
OPEN GRASSLAND
SPARSE SAVANNA
ONLY MANGROVE
HIGH TREES OUTSIDE FOR
MEDIUM. TREE DOM. AREA
LOW TREES
........... SHRUBS

........... GRASS
........... PLANTATIONS
.......... NO VEG.
New class name Color/code
1
ONLY FOREST AREA
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Methodology, approach and existing tools for
data production and
harmonization