Table 1 — Means, standard deviations, and sample sizes of variables used in the regression analyses of 



1 1-year height growth, 12-year diameter growth, and budworm defoliation of Douglas-fir, subalpine 

 fir, and Engelmann spruce 



Standard 



Variable n Mean deviation 



Douglas-fir 



Natural log height growth 



160 



0.275 



1.533 



Natural log d.b.h. growth 



160 



-.657 



.914 



Overstory removal 1 



160 



.206 



.405 



Overstory removal 2 



160 



.188 



.392 



Overstory removal 3 



160 



.075 



.264 



1 973 height, feet 



160 



15.256 



13.1 11 



1973 d.b.h., inch 



160 



2.052 



1 .992 



Crown ratio 



160 



.497 



.251 



Plot basal area, ft 2 



160 



1.702 



1.653 



Basal area change, ft 2 



160 



.950 



1 .500 



10-year radial growth, inch 



147 



.144 



.098 



Percent defoliation 



140 



31.536 



27.423 



Coefficient variable height 



147 



103.565 



55.139 





Engelmann Spruce 







Natural log height growth 



84 



0.675 



1.623 



Natural log d.b.h. growth 



84 



-.420 



.843 



Overstory removal 1 



84 



.321 



.470 



Overstory removal 2 



84 



.060 



.238 



Overstory removal 3 



84 



.143 



.352 



1973 height, feet 



84 



15.643 



14.097 



1973 d.b.h., inch 



84 



2.256 



2.1 17 



Crown ratio 



84 



.553 



.226 



Plot basal area, ft 2 



84 



2.105 



2.088 



Basal area change, ft 2 



84 



1.399 



2.166 



10-year radial growth, inch 



72 



.179 



.159 



Percent defoliation 



69 



51.638 



28.369 



Coefficient variable height 



72 



95.083 



34.259 





Subalpine Fir 







Natural log height growth 



229 



0.240 



1.553 



Natural log d.b.h. growth 



229 



-.961 



1.037 



Overstory removal 1 



229 



.114 



.318 



Overstory removal 2 



229 



.183 



.388 



Overstory removal 3 



229 



.183 



.388 



1973 height, feet 



229 



7.039 



10.928 



1973 d.b.h., inch 



229 



.833 



1.600 



Crown ratio 



229 



.701 



.287 



Plot basal area, ft 2 



229 



1.667 



1.986 



Basal area change, ft 2 



229 



1.099 



1.701 



10-year radial growth, inch 



229 



.122 



.116 



Percent defoliation 



217 



35.083 



28.631 



Coefficient variable height 



221 



144.624 



60.979 



3 



