gutten: von Guttenberg's Norway spruce (Picea abies [L.] Karst) tree...
In FAwR: Functions and Datasets for "Forest Analytics with R"
Description
Usage
Format
Source
References
Examples
Description
The data are measures from 107 trees. The trees were selected as
being of average size from healthy and well stocked stands in the Alps.
Usage
1
Format
A data frame with 1200 observations on the following 9 variables.
siteGrowth quality class of the tree's habitat. 5 levels.
locationDistinguishes tree location. 7 levels.
treeAn identifier for the tree within location.
age.baseThe tree age taken at ground level.
heightTree height, m.
dbh.cmTree diameter, cm.
volumeTree volume.
age.bhTree age taken at 1.3 m.
tree.IDA factor uniquely identifying the tree.
Source
The data were kindly provided to us by Professor Boris Zeide,
and are documented in von Guttenberg, A. R., 1915. Growth and yield of
spruce in Hochgebirge. Franz Deuticke, Vienna (in German).
References
Robinson, A.P., and J.D. Hamann. 2010. Forest Analytics with R: an
Introduction. Springer.
Zeide, B., 1993. Analysis of growth equations. Forest Science 39 (3),
549-616
Examples
1
2
FAwR documentation built on Jan. 13, 2021, 7:45 a.m.
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Description Usage Format Source References Examples
Description
The data are measures from 107 trees. The trees were selected as being of average size from healthy and well stocked stands in the Alps.
Usage
1 |
Format
A data frame with 1200 observations on the following 9 variables.
siteGrowth quality class of the tree's habitat. 5 levels.
locationDistinguishes tree location. 7 levels.
treeAn identifier for the tree within location.
age.baseThe tree age taken at ground level.
heightTree height, m.
dbh.cmTree diameter, cm.
volumeTree volume.
age.bhTree age taken at 1.3 m.
tree.IDA factor uniquely identifying the tree.
Source
The data were kindly provided to us by Professor Boris Zeide, and are documented in von Guttenberg, A. R., 1915. Growth and yield of spruce in Hochgebirge. Franz Deuticke, Vienna (in German).
References
Robinson, A.P., and J.D. Hamann. 2010. Forest Analytics with R: an Introduction. Springer.
Zeide, B., 1993. Analysis of growth equations. Forest Science 39 (3), 549-616
Examples
1 2 |
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