datana (version 1.0.6)

crown: Tree crown radii

Description

Crown radii measurements in cardinal directions for sample trees at the Rucamanque experimental forest, near Temuco, Chile. Data were collected within a sample plot of 250 m\(^{2}\), located in a secondary forest stand dominated by Nothofagus obliqua.

Usage

data(crown)

Format

Contains of variables, as follows:

spp

Species code. 'Ro' is Nothofagus obliqua (roble), 'Co' is Nothofagus dombeyi (Coigue) and 'Ol' is Olivillo.

dbh

Diameter at breast height, in cm.

toth

Total height, in m.

crad.n

Crown radii towards the north, in m.

crad.e

Crown radii towards the east, in m.

crad.s

Crown radii towards the south, in m.

crad.w

Crown radii towards the west, in m.

x.coord

Cardinal position at the X-axis, in m.

y.coord

Cardinal position at the Y-axis, in m.

cr.diam

Crown diameter, in m.

References

- Salas C. 2001. Caracterización básica del relicto de Biodiversidad Rucamanque [Basic characterization of the biodiversity remnant Rucamanque]. Bosque Nativo, 29:3-9. https://eljatib.com/publication/2001-06-01_caracterizacion_basi/

- Salas C, and Garcia O. 2006. Modelling height development of mature Nothofagus obliqua. Forest Ecology and Management 229 (1-3): 1-6. tools:::Rd_expr_doi("10.1016/j.foreco.2006.04.015")

Examples

data(crown)    
table(crown$spp) 
descstat(crown[,c("dbh","cr.diam")])