araucaria {datana}

Stand variables for sampling plots in Araucaria araucana forests in southern Chile.

Description

These are plot-level data from Araucaria araucana-dominated forests in southern Chile. The data are based on tree-level measurements from fixed-area plots of 1000 m^{2}, and there are two forest stands.

Usage

data(araucaria)

Format

Contains plot-level variables as follows:

stand

Stand number.

plot.no

Plot sample identificator number.

x.utm

UTM coordinate in X-axis, in km.

y.utm

UTM coordinate in Y-axis, in km.

slope

Slope, in %.

aspect

Aspect, in degrees.

eleva

Elevation, in msnm.

nha

Tree density, in trees/ha.

gha

Basal area, in m^{2}/ha.

hdom

Dominant height, in m.

vha

Gross stand volume, m^{3}/ha.

dg

Diameter of the average basal area tree of the plot, in cm.

Source

The data are provided courtesy of Dr Nelson Ojeda (Universidad de La Frontera, Temuco, Chile) and further details can be found in Salas et al (2010).

References

Salas C, Ene L, Ojeda N, Soto H. 2010. Metodos estadisticos parametricos y no parametricos para predecir variables de rodal basados en Landsat ETM+: una comparación en un bosque de Araucaria araucana en Chile. Bosque 31(3): 179-194.

Examples

head(araucaria) 
tapply(araucaria$plot.no,araucaria$stand,length)