Vegetation Parameter File
Vegetation parameters needed for the different VIC model set-ups are listed below. Number of vegetation types and fraction of grid cell covered must be defined for each grid cell.
![]()
|
Variable Name |
Units |
Description |
|
vegetat_type_num |
N/A |
Number of vegetation types in a grid cell |
Repeats for each vegetation type in the grid cell:
|
Variable Name |
Units |
Description |
|
veg_class |
N/A |
Vegetation class identification number (reference index to vegetation library) |
|
Cv |
fraction |
Fraction of grid cell covered by vegetation type |
Repeats for each defined root zone, for each vegetation type:
|
Variable Name |
Units |
Description |
|
root_depth |
m |
Root zone thickness (sum of depths is total depth of root penetration) |
|
root_fract |
fraction |
Fraction of root in the current root zone. |
OPTIONAL - Repeats for each vegetation type:
|
Variable Name |
Units |
Description |
|
GLOBAL_LAI |
N/A |
Leaf Area Index, one per month (specify GLOBAL_LAI=TRUE in global control file) |
![]()
Two vegetation types with three root zones in the seventh grid cell with LAI included.
7 2
8 0.102679 0.10 0.10 1.00 0.65 0.50 0.25
0.312 0.413 0.413 0.413 0.413 0.488 0.975 1.150 0.625 0.312 0.312 0.312
10 0.897321 0.10 0.10 1.00 0.70 0.50 0.20
0.212 0.262 0.275 0.338 0.750 1.275 0.950 0.650 0.450 0.288 0.237 0.212
![]()