|
|
Factor |
Range of estimates |
Source/notes |
| |
|
A |
Forest clearance attributable to cultivation (remaining clearance is due to
grazing) |
16-20% |
Morton et al. (2006); Nepstad et al. (2009) |
|
B |
Soy as percentage of total cultivation area (ignoring double
cropping) |
84% |
Wright (2009) |
|
C |
Oil as percentage of soy crop, by weight |
18% |
|
|
D |
Oil as percentage of soy crop, by market value |
42% |
Based on 3:1 ratio of $/tonne (World Bank 2008) |
|
E |
Percentage of soy oil required to meet Brazil’s biofuel blending
targets |
35% |
Hall et al. (2009) |
|
F |
Forest loss due to soy |
13.4-16.8% |
A x B |
|
G |
Forest loss due to soy oil, by weight |
2.4-3.0% |
F x C |
|
H |
Forest loss due to soy oil, by $ value |
5.6-7.0% |
F x D |
|
J |
Range of estimates of forest loss due to biodiesel based on weight and $
values |
0.8-2.6% |
Min. G x E, max. H x E |
|
K |
Alternative estimate of forest loss due to biodiesel, based on economic
inseparability of soy oil and soy meal |
4.6-5.9% |
F x E; burden calculated on total soy crop, not on oil only. |