datana (version 1.0.6)

spataustria: Tree locations for several plots of Norway spruce in Austria

Description

The Cartesian position, species, year, ID tree , and diameter of trees within a plot were measured.

Usage

data(spataustria)

Format

Contains cartesian position of trees, and covariates, in sample plots, as follows:

plot.code

Plot identificator

tree.code

Tree identificator

spp.name

species abreviation as follows: PCAB=Picea abies, FASY= Fagus sylvatica, QCPE=Quercus petraea , PNSY= Pinus Sylvestris, LADC=Larix decidua

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

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 tools:::Rd_expr_doi("10.1038/sdata.2018.77")

Examples

data(spataustria)    
head(spataustria)
pos<-spataustria
oldpar<-par(mar=c(4,4,0,0))
bord<-data.frame(
 x=c(min(pos$x.coord),max(pos$x.coord),min(pos$x.coord),max(pos$x.coord)),
 y=c(min(pos$y.coord),min(pos$y.coord),max(pos$y.coord),min(pos$y.coord))
 )
plot(bord,type="n", xlab="x (m)", ylab="y (m)", asp=1, bty='n')
points(pos$x.coord,pos$y.coord,col=pos$plot.code,cex=0.5) 
par(oldpar)