spatimepsp {biometrics} | R Documentation |
Temporal tree locations within a sample plot in the Vienna woods
Description
Spatial location of trees remeasured through time for a sample plot in an experimental forest in Austria. Other covariates are also available.
Usage
data(spatimepsp)
Format
Contains cartesian position of trees, and covariates, in a sample plot, as follows:
- plot
Plot number.
- tree
Tree number.
- species
Species code as follows: PCAB=Picea abies, LADC=Larix decidua, PNSY=Pinus sylvestris, FASY=Fagus Sylvatica, QCPE=Quercus petraea, BTPE=Betula pendula.
- x.coord
Cartesian position in the X-axis, in m.
- y.coord
Cartesian position in the Y-axis, in m.
- year
Measurement year.
- dbh
diameter at breast-height, in cm.
Source
The Austrian Research Center for Forests established a spacing experiment with Norway spruce (Picea abies) in the Vienna Woods. In the 'Hauersteig' experiment, several tree-level variables were measured within four sample plots over time. Data were retrieved from the paper cited below, where several details might be worth reading.
References
- Kindermann G. Kristofel F, Neumann M, Rossler G, Ledermann T & Schueler. 2018. 109 years of forest growth measurements from individual Norway spruce trees. Sci. Data 5:180077 doi:10.1038/sdata.2018.77
Examples
data(spatimepsp)
head(spatimepsp)
df<-spatimepsp
lattice::xyplot(y.coord~x.coord|as.factor(year),
data=df,as.table=TRUE)