R: Tally Lake, Flathead National Forest, Montana, USA
TallyLake
R Documentation
Tally Lake, Flathead National Forest, Montana, USA
Description
Polygon-based reference data used by Stage and Crookston (2007)
to demonstrate partitioning of error components and related statistics.
Observations are summaries of data collected on forest stands (ploygons).
Usage
data(TallyLake)
Format
A data frame with 847 rows and 29 columns:
Ground based measurements of trees (Y-variables):
TopHt Height of tallest trees (ft)
LnVolL Log of the volume (ft^3/acre) of western larch
LnVolDF Log of the volume (ft^3/acre) of Douglas-fir
LnVolLP Log of the volume (ft^3/acre) of lodgepole pine
LnVolES Log of the volume (ft^3/acre) of Engelmann spruce
LnVolAF Log of the volume (ft^3/acre) of alpine fir
LnVolPP Log of the volume (ft^3/acre) of ponderosa pine
CCover Canopy cover (percent)
Geographic Location, Slope, and Aspect (X-variables):
utmx UTM easting at plot center
utmy UTM northing at plot center
elevm Mean elevation (ft) above sea level over plot
eevsqrd (elevm-1600)^2
slopem Mean slope (percent) over plot
slpcosaspmMean of slope (proportion) times the cosine of aspect (see
Stage (1976) for description of this transformation)
slpsinaspmMean of slope (proportion) times the sine of aspect
Additional X-variables:
ctim Mean of slope curviture over pixels in stand
tmb1m Mean of LandSat band 1 over pixels in stand
tmb2m Mean of LandSat band 2 over pixels in stand
tmb3m Mean of LandSat band 3 over pixels in stand
tmb4m Mean of LandSat band 4 over pixels in stand
tmb5m Mean of LandSat band 5 over pixels in stand
tmb6m Mean of LandSat band 6 over pixels in stand
durm Mean of light duration over pixels in stand
insom Mean of solar insolation over pixels in stand
msavim Mean of AVI for pixels in stand
ndvim Mean of NDVI for pixels in stand
crvm Mean of slope curviture for pixels in stand
tancrvm Mean of tangent curvature for pixels in stand
tancrvsdStandard deviation of tangent curvature for pixels in stand
Source
USDA Forest Service
References
Stage, A.R.; Crookston, N.L. 2007. Partitioning error components
for accuracy-assessment of near neighbor methods of imputation.
For. Sci. 53(1):62-72 http://www.treesearch.fs.fed.us/pubs/28385
Stage, A.R. (1976). An expression for the effect of aspect, slope, and
habitat type on tree growth. For. Sci. 22(4):457-460.