thinning {lmfor}

Effect of thinning on individual tree growth

Description

A time series of estimated effect of thinning on the annual basal area growth of a Scots pine tree.

Usage

data(thinning)

Format

A data frame with 23 observations on the following 3 variables.

TreeID

Tree ID, 3_3 for all observations in this data.

Year

Calendar year (1983-2005).

ThEff

Estimated effect of thinning on the annual basal area growth in mm^2.

Details

The thinning took place between years 1986 and 1987. For details about the original measurements, see the documentation of data set patti, afterthin. For details about the procedure used in extracting the thinning effect, see Example 6.6 in Mehtatalo and Lappi 2020b and for nonlinear modeling of this data, see Chapter 7 of Mehtatalo and Lappi 2020a.

References

Mehtatalo, L., Peltola, H., Kilpelainen, A. and Ikonen, V.-P. 2014. The response of basal area growth of Scots pine to thinning: A longitudinal analysis of tree-specific series using a nonlinear mixed-effects model. Forest Science 60 (4): pp. 636-644. doi:10.5849/forsci.13-059.

Mehtatalo, Lauri and Lappi, Juha 2020a. Biometry for Forestry and Environmental Data: with examples in R. New York: Chapman and Hall/CRC. 426 p. doi:10.1201/9780429173462

Mehtatalo, Lauri and Lappi, Juha 2020b. Biometry for Forestry and Environmental Data: with examples in R. Full Versions of The Web Examples. Available at http://www.biombook.org.

See Also

patti, afterthin, thefdata.

Examples

data(thinning)
plot(thinning$Year,thinning$ThEff,type="l")