Landcover
barren
agriculture •
shrub
grass 0
ENF.
DNF .
EBF .
DBF
Annual Total
APAR
2500
2000
1500
barren
1000
500
o
(MJ/m2/yr)
Radiation Use
Efficiency
0.5
0.4
o 0.3
barren
0.2
0.1
o
(gC/MJ)
FIGURE 3.2. Example of the landcover (top), annual APAR (middle), and E (bottom) global data inputs needed to compute the NPP algorithm.