Canadian Forest Service Publications
Predicting future diameter of sugar maple in uneven-aged stands of west central New Brunswick and New York. 2012. Swift, D.E.; Kiernan, D.H.; Bevilacqua, E.; Nyland, R.D. The Forestry Chronicle 88(4): 420–425.
Issued by: Atlantic Forestry Centre
Catalog ID: 34647
Availability: PDF (request by e-mail)
We used data from uneven-aged research plots in west-central New Brunswick to validate a sugar maple (Acer saccharum Marsh.) diameter growth model initially developed from remeasured trees in single-tree selection system stands at two New York State locations. We also refitted the coefficients to fit the New Brunswick data and added variables to account for variation across locations and treatments among the New Brunswick plots. The original equation predicted future diameter for New Brunswick trees reasonably well, but a version with coefficients specific to New Brunswick proved more accurate. Adding variables that account for unique features of the New Brunswick data reinforced the notion that growth rates differ across locations, and also that post-cutting diameter growth varies with the intensity of release. Although the New York model and the general model with refitted coefficients unique to New Brunswick indicated that rates of growth do not change throughout a cutting cycle, equations having a variable to account for location of the New Brunswick research sites showed that growth decreased with time. Test results are presented.