plots.swo {rconifers}R Documentation

Example plots data set for SWO Variant of the CONIFERS growth model

Description

This a simple plot file data.frame that contains basic plot attributes used in the CONIFERS growth model, corresponding to the plants.swo dataframe.

The plots.swo data frame has 4 rows and 6 columns.

Usage

data(plots.swo)

Format

This data frame contains the following columns:

plot
A numeric plot identifier.
elevation
Plot elevation, in feet.
slope
Plot slope, in percent.
aspect
Plot aspect, in degrees from North.
whc
Water holding capacity of the plot, in inches.
map
Mean annual precipitation, in inches.
si30
Site Index 30, in meters (optional). It must be present to project with variant=1 (SMC_VARIANT).

Details

The example plot data represents plot level observations for a field sample that can be used to generate future forest conditions using the CONIFERS forest growth model. The data are in imperial units. The required values are the plot, elevation, and slope, and aspect measurements. Values that have not been observed, or are missing (e.g. whc and map), are denoted with an NA and can be imputed using the impute function, which the exception of the si30. The current version of the library does not include the functions to compute si30 from tree observations in the impute function.

Author(s)

Jeff D. Hamann jeff.hamann@forestinformatics.com,
Martin W. Ritchie mritchie@fs.fed.us

References

Ritchie, M.W. 2008. User's Guide and Help System for CONIFERS: A Simulator for Young Conifer Plantations Version 4.10. See http://www.fs.fed.us/psw/programs/ecology_of_western_forests/projects/conifers/

Flewelling, J., R. Collier, B. Gonyea. Marshall D, and Turnblom E. 2001. Height-Age Curves for Planted Stands of Douglas-fir, with Adjustments for Density. (Working Paper 1). See http://www.cfr.washington.edu/research.smc/working_papers/smc_working_paper_1.pdf.

See Also

calc.max.sdi, plots.smc, plants.swo, swo

Examples

library( rconifers )
data(plots.swo)
print( plots.swo )

[Package rconifers version 1.0.0 Index]