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GEOSPATIAL
ANALYSIS
CSV EXPORTANALYSIS
SINGLE-USER MULTI-USERCOLLECT EARTH
ANALYSISPROCESSING AND DISPLAY
DATA ENTRY VHR IMAGES, CODE EDITOR VHR IMAGES
COLLECT SURVEY
DESIGNER
PROCESSING
Spatial dimension
Temporal dimension
Two phase sampling*
Random restricted. Stratification according to drylands aridity zones
1st phase > 200,000 sampling points analysed through Collect Earth
2nd phase > 4,000 sampling points in the field
*References:
EUROSTAT LUCAS http://ec.europa.eu/eurostat/web/lucas/methodology
Swiss NFI https://www.lfi.ch/lfi/methoden1-en.php
USA NFI http://www.fia.fs.fed.us/library/sampling/index.php
France NFI http://inventaire-forestier.ign.fr/spip/spip.php?article334
Italy NFI&C http://www.sian.it/inventarioforestale/jsp/three_assess.jsp
Czech Republic NFI http://www.uhul.cz/images/nil/NIL_CR_2001-2004_NFI_CZ_2001-2004.pdfSwiss NFI
Forest area 1,079,131,310 ha
Other woodland 590,510,556 ha
Other areas with trees 258,633,579 ha
Tree Canopy area 782,000,000 ha
Number of trees > 72,200,582,831
Number of shrubs > 81,067,605,032
±1 ±1.9
±1.8
±3.8
±3.8
±1.5±2.5
Data Area
(M ha)
Drylands
%
FRA Remote-
Sensing 2010
416 7.2
FAO+ Drylands 924 16.1
Forest area according to FAO FRA forest definitionWithout Russian Federation
IHave we found a new Amazon forest ?
0% 2% 4% 6% 8% 10-19% 20-29% 30-39% 40-49% 50-59% 60-69% 70-79% 80-89% 90-100%
Tree cover %
Tre
e c
ove
r re
lative
dis
trib
ution
(%
)
Cropland Forest Grassland Otherland Settlement Wetland
TREE COVER DISTRIBUTION PER LAND USE
Matrix by tree cover and number
Tre
e c
anopy a
rea
Source Area (M ha) Drylands %
FAO+ Drylands 782 12.8
Hansen – treecover2000 473 7.7
0.6
7.8
0.9
9.3
0.5
2.8 2.82.5
3.0
4.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
Central Asia Horn of Africa Middle East NorthAmerica
NorthernAfrica
Oceania Sahel SouthAmerica -
West
South WestAsia
SouthernAfrica
%
Regions
**
53
29
48
11
3
10 8
41
9
3
28
0
10
20
30
40
50
60
North America South America Africa Asia Europe andRussia
Oceania
RE
LA
TIV
E %
OF
AR
EA
W
ITH
TR
EE
P
RE
SE
NC
E
Cropland Grassland