Geoscience Reference
In-Depth Information
(a)
Cultivated Systems:
Areas in which at least
30% of the landscape
is cultivated
(b)
Fraction of potential area converted
10
0
10
20
30
40
50
60
70
80
90
100%
−
MEDITERRANEAN FORESTS,
WOODLANDS, AND SCRUB
TEMPERATE FOREST
STEPPE AND WOODLAND
TEMPERATE BROADLEAF
AND MIXED FORESTS
TROPICAL AND
SUB-TROPICAL DRY
BROADLEAF FORESTS
FLOODED GRASSLANDS
AND SAVANNAS
TROPICAL AND SUB-TROPICAL
GRASSLANDS, SAVANNAS,
AND SHRUBLANDS
TROPICAL AND SUB-TROPICAL
CONIFEROUS FORESTS
DESERTS
MONTANE GRASSLANDS
AND SHRUBLANDS
TROPICAL AND SUB-TROPICAL
MOIST BROADLEAF FORESTS
TEMPERATE
CONIFEROUS FORESTS
BOREAL
FORESTS
TUNDRA
Conversion of original biomes
Loss by
1950
Loss between
1950 and 1990
Projected loss
by 2050*
Figure 25.1
(a) Land areas which were more than 30% cultivated in 2000. (b) Projected change in original land cover by
2050 given by biome according to the four Millennium Ecosystem scenarios. (Redrawn from MEA, 2005, published with
permission.) See Plate 7 for a colour version of these image.
