NPPmodel {soilassessment} | R Documentation |
A function for calculating net primary production using air temperature and mean rainfall amount
Description
This is an empirical function for deriving net primary production using climatic variables (mean temperature and rainfall amounts)
Usage
NPPmodel(rain,temperature,model)
Arguments
rain |
total annual rainfall amount in mm |
temperature |
average annual air temperature amount in degrees Celsius |
model |
model for calculating net primary production. Included models in the function are Miami, Schurr, and NCEAS |
Details
This function is based on empirical models for calculating annual net primary production (NPP) of dry matter
Value
Net primary production (NPP) of dry matter in grams per square meter per year
Note
This empirical function estimates annual NPP in g/m2/year. It is a general model for all land cover types. It may be necessary to adjust it for certain cover types or geolocations
Author(s)
Christian Thine Omuto
References
Schuur, E. A. G. 2003. Productivity and global climate revisited: the sensitivity of tropical forest growth to precipitation. Ecology 84:1165–1170
Lieth, H. 1975. Modeling the primary productivity of the world. Pages 237–264 in H. Lieth and R. H. Whittaker, editors. Primary productivity of the biosphere. Springer-Verlag, New York, New York, USA
Del Grosso, S., Parton, W., Stohlgren, T., Zheng, D., Bachelef, D., Prince, S., Hibbard, K., Olson, R. 2008. Global potential net primary production predicted from vegetation class, precipitation, and temperature. Ecology, 89(8): 2117-2126
See Also
carbonTurnover
, RotCmoistcorrection
Examples
NPPmodel(800,23,"miami")
NPPmodel(800,23,"schuur")
NPPmodel(800,23,"NCEAS")