NPPmodel: A function for calculating net primary production using air...

In soilassessment: Assessment Models for Agriculture Soil Conditions and Crop Suitability

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")

soilassessment documentation built on July 9, 2023, 7:40 p.m.