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NAME

i.biomass - Computes biomass growth, precursor of crop yield calculation

KEYWORDS

imagery, biomass, fpar, yield

SYNOPSIS

i.biomass
i.biomass help
i.biomass fpar=name lightuseefficiency=name latitude=name dayofyear=name transmissivitysingleway=name wateravailability=name output=name [--overwrite] [--verbose] [--quiet]

Flags:

--overwrite
Allow output files to overwrite existing files
--verbose
Verbose module output
--quiet
Quiet module output

Parameters:

fpar=name
Name of fPAR raster map
lightuseefficiency=name
Name of light use efficiency raster map (UZB:cotton=1.9)
latitude=name
Name of degree latitude raster map [dd.ddd]
dayofyear=name
Name of Day of Year raster map [1-366]
transmissivitysingleway=name
Name of single-way transmissivity raster map [0.0-1.0]
wateravailability=name
Value of water availability raster map [0.0-1.0]
output=name
Name for output daily biomass growth raster map [kg/ha/d]

DESCRIPTION

i.biomass Calculates the biomass growth for a day after [1][2]. Input:

NOTES

It can use the output of i.eb.evapfr directly as water availability input.

TODO

remove Latitude, DOY and Tsw from input and replace with a raster input compatible with r.sun output.

SEE ALSO

i.eb.evapfr

REFERENCES

[1] Bastiaanssen, W.G.M., Ali, S., 2002. A new crop yield forecasting model based on satellite measurements applied across the Indus Basin, Pakistan. Agriculture, Ecosystems and Environment, 94(3):321-340.

[2] Chemin, Y., Platonov, A., Abdullaev, I., Ul-Hassan, M. 2005. Supplementing farm level water productivity assessment by remote sensing in transition economies. Water International. 30(4):513-521.

AUTHORS

Yann Chemin, Bec de Mortagne, France

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