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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.

Vegetation Parameter File Format

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)

Example Vegetation Parameter 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
    

 

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Last modified: Thu Nov 2 13:36:43 PST 2006