befp34: Plot 34 Bartlett Density Study

In ssWavelets: Wavelet Functionality for Package 'sampSurf'

Description

This data set comes from 1989 remeasurements on the ‘Density Study’ at the Bartlett Experimental Forest, Bartlett, NH, USA. The Bartlett Experimental Forest is part of the White Mountain National Forest.

Usage

data("befp34")

Format

The format is: chr "befp34"

Details

The ‘Density Study’ is one of many silvicultural treatments in the Bartlett Experiment Forest, Bartlett, NH, USA. The study was designed with the idea of applying different treatments to existing even-aged stands with the intent of eventual conversion to uneven-aged. More details may be found in Leak and Solomon (1975) or Leak and Gove (2008). The original treatment for plot 34 was cutting to 40 square feet of basal area per acre with 30 percent of the residual basal area in sawtimber trees over 10.5 inches dbh.

Note that this study was conducted in ‘English’ (U.S. Customary) units, therefore all locations and measurements are in this system. It is simple enough to convert to metric if desired. These data have left it in ‘English’ because it gives better detail in the “sampSurf” and subsequent “ssMODWT” image results.

The columns or variables in the data frame are those required to create an object of class standingTrees, plus a few extras...

plotNo

The plot number.

treeNo

The tree number within this plot.

x,y

The tree location coordinates in feet. The northwest corner of the physical plot is at (0,0).

spp.num

The species number corresponding to the codes below.

species

The species code. Legal species codes are...

‘HE’	Eastern hemlock (Tsuga canadensis)
‘BE’	American beech (Fagus grandifolia)
‘PB’	Paper birch (Betula papyrifera)
‘RM’	Red maple (Acer rubrum)
‘RS’	Red spruce (Picea rubens)
‘SM’	Sugar maple (Acer saccharum)
‘WA’	White ash (Fraxinus americana)
‘YB’	Yellow birch (Betula alleghaniensis)
‘OT’	Other species

dbh

Diameter at breast height in inches.

height

A modeled height in feet; the ‘all species’ equation in Fast and Ducey (2011) was used.

solidType

A randomly generated solid type in the range [2,4]; see the details for the slot of the same name in standingTree.

topDiam

The top diameter in inches. These should all be zero, tapering to a ‘tip’ for all species.

Source

The full data set will eventually be available online. It is currently available from the package author.

References

Please refer to the package vignette for examples of the use of this data set.

The Bartlett Experimental Forest.

The White Mountain National Forest, Eastern Region, R9.

Leak, W. B. and D. S. Solomon. 1975. Influence of Residual Stand Density on Regeneration of Northern Hardwoods. USDA Forest Service Research Paper NE-310. Northeastern Forest Experiment Station, Upper Darby, PA. https://www.treesearch.fs.fed.us/pubs/15417.

Leak, W. B. and J. H. Gove. 2008. Growth of Northern Hardwoods in New England: a 25-Year Update. Northern Journal of Applied Forestry 25(2):103–105.

Fast, A. J. and M. J. Ducey. 2011. Height-Diameter Equations for Select New Hampshire Tree Species. Northern Journal of Applied Forestry 28(3):157–160.

Examples

#
#LazyData, so just use it; e.g.,...
#
dim(befp34)
head(befp34)

ssWavelets documentation built on May 2, 2019, 5:54 p.m.